Search Results for author: Chen Change Loy

Found 269 papers, 179 papers with code

Cumulative Attribute Space for Age and Crowd Density Estimation

no code implementations CVPR 2013 Ke Chen, Shaogang Gong, Tao Xiang, Chen Change Loy

A number of computer vision problems such as human age estimation, crowd density estimation and body/face pose (view angle) estimation can be formulated as a regression problem by learning a mapping function between a high dimensional vector-formed feature input and a scalarvalued output.

Age Estimation Attribute +3

Constructing Robust Affinity Graphs for Spectral Clustering

no code implementations CVPR 2014 Xiatian Zhu, Chen Change Loy, Shaogang Gong

Spectral clustering requires robust and meaningful affinity graphs as input in order to form clusters with desired structures that can well support human intuition.

Clustering

Transferring Landmark Annotations for Cross-Dataset Face Alignment

no code implementations2 Sep 2014 Shizhan Zhu, Cheng Li, Chen Change Loy, Xiaoou Tang

We show extensive results on combining various popular databases (LFW, AFLW, LFPW, HELEN) for improved cross-dataset and unseen data alignment.

Face Alignment Object Recognition

Crowd Saliency Detection via Global Similarity Structure

no code implementations14 Oct 2014 Mei Kuan Lim, Ven Jyn Kok, Chen Change Loy, Chee Seng Chan

This paper proposes a novel framework to identify and localize salient regions in a crowd scene, by transforming low-level features extracted from crowd motion field into a global similarity structure.

Saliency Detection

Image Super-Resolution Using Deep Convolutional Networks

60 code implementations31 Dec 2014 Chao Dong, Chen Change Loy, Kaiming He, Xiaoou Tang

We further show that traditional sparse-coding-based SR methods can also be viewed as a deep convolutional network.

Image Super-Resolution Video Super-Resolution

Learning to Recognize Pedestrian Attribute

no code implementations5 Jan 2015 Yubin Deng, Ping Luo, Chen Change Loy, Xiaoou Tang

Learning to recognize pedestrian attributes at far distance is a challenging problem in visual surveillance since face and body close-shots are hardly available; instead, only far-view image frames of pedestrian are given.

Attribute Informativeness

Learning from Multiple Sources for Video Summarisation

no code implementations13 Jan 2015 Xiatian Zhu, Chen Change Loy, Shaogang Gong

Many visual surveillance tasks, e. g. video summarisation, is conventionally accomplished through analysing imagerybased features.

Clustering Video Understanding

Reading Scene Text in Deep Convolutional Sequences

1 code implementation14 Jun 2015 Pan He, Weilin Huang, Yu Qiao, Chen Change Loy, Xiaoou Tang

We develop a Deep-Text Recurrent Network (DTRN) that regards scene text reading as a sequence labelling problem.

Scene Text Recognition

Semantic Image Segmentation via Deep Parsing Network

no code implementations ICCV 2015 Ziwei Liu, Xiaoxiao Li, Ping Luo, Chen Change Loy, Xiaoou Tang

This paper addresses semantic image segmentation by incorporating rich information into Markov Random Field (MRF), including high-order relations and mixture of label contexts.

Image Segmentation Semantic Segmentation

Learning Social Relation Traits from Face Images

no code implementations ICCV 2015 Zhanpeng Zhang, Ping Luo, Chen Change Loy, Xiaoou Tang

Social relation defines the association, e. g, warm, friendliness, and dominance, between two or more people.

Attribute Relation

From Facial Parts Responses to Face Detection: A Deep Learning Approach

1 code implementation ICCV 2015 Shuo Yang, Ping Luo, Chen Change Loy, Xiaoou Tang

In this paper, we propose a novel deep convolutional network (DCN) that achieves outstanding performance on FDDB, PASCAL Face, and AFW.

Face Detection

An Empirical Study of Recent Face Alignment Methods

no code implementations16 Nov 2015 Heng Yang, Xuhui Jia, Chen Change Loy, Peter Robinson

In this paper, we carry out a rigorous evaluation of these methods by making the following contributions: 1) we proposes a new evaluation metric for face alignment on a set of images, i. e., area under error distribution curve within a threshold, AUC$_\alpha$, given the fact that the traditional evaluation measure (mean error) is very sensitive to big alignment error.

Face Alignment Face Detection

Towards Arbitrary-View Face Alignment by Recommendation Trees

no code implementations20 Nov 2015 Shizhan Zhu, Cheng Li, Chen Change Loy, Xiaoou Tang

The unified framework seamlessly handles different viewpoints and landmark protocols, and it is trained by optimising directly on landmark locations, thus yielding superior results on arbitrary-view face alignment.

Face Alignment Head Pose Estimation +1

Discriminative Sparse Neighbor Approximation for Imbalanced Learning

no code implementations3 Feb 2016 Chen Huang, Chen Change Loy, Xiaoou Tang

These methods further deteriorate on small, imbalanced data that has a large degree of class overlap.

Learning Deep Representation for Imbalanced Classification

no code implementations CVPR 2016 Chen Huang, Yining Li, Chen Change Loy, Xiaoou Tang

We further demonstrate that more discriminative deep representation can be learned by enforcing a deep network to maintain both inter-cluster and inter-class margins.

Classification General Classification +2

Deep Cascaded Bi-Network for Face Hallucination

no code implementations18 Jul 2016 Shizhan Zhu, Sifei Liu, Chen Change Loy, Xiaoou Tang

We present a novel framework for hallucinating faces of unconstrained poses and with very low resolution (face size as small as 5pxIOD).

Face Hallucination Hallucination

Accelerating the Super-Resolution Convolutional Neural Network

14 code implementations1 Aug 2016 Chao Dong, Chen Change Loy, Xiaoou Tang

As a successful deep model applied in image super-resolution (SR), the Super-Resolution Convolutional Neural Network (SRCNN) has demonstrated superior performance to the previous hand-crafted models either in speed and restoration quality.

Image Super-Resolution

Deep Convolution Networks for Compression Artifacts Reduction

2 code implementations9 Aug 2016 Ke Yu, Chao Dong, Chen Change Loy, Xiaoou Tang

Lossy compression introduces complex compression artifacts, particularly blocking artifacts, ringing effects and blurring.

Blocking Transfer Learning

From Facial Expression Recognition to Interpersonal Relation Prediction

no code implementations21 Sep 2016 Zhanpeng Zhang, Ping Luo, Chen Change Loy, Xiaoou Tang

Unlike existing models that typically learn from facial expression labels alone, we devise an effective multitask network that is capable of learning from rich auxiliary attributes such as gender, age, and head pose, beyond just facial expression data.

Attribute Facial Expression Recognition +2

Image Aesthetic Assessment: An Experimental Survey

1 code implementation4 Oct 2016 Yubin Deng, Chen Change Loy, Xiaoou Tang

This survey aims at reviewing recent computer vision techniques used in the assessment of image aesthetic quality.

Binary Classification

Local Similarity-Aware Deep Feature Embedding

no code implementations NeurIPS 2016 Chen Huang, Chen Change Loy, Xiaoou Tang

Existing deep embedding methods in vision tasks are capable of learning a compact Euclidean space from images, where Euclidean distances correspond to a similarity metric.

Image Retrieval Retrieval +2

PolyNet: A Pursuit of Structural Diversity in Very Deep Networks

3 code implementations CVPR 2017 Xingcheng Zhang, Zhizhong Li, Chen Change Loy, Dahua Lin

A number of studies have shown that increasing the depth or width of convolutional networks is a rewarding approach to improve the performance of image recognition.

Image Classification

Faceness-Net: Face Detection through Deep Facial Part Responses

no code implementations29 Jan 2017 Shuo Yang, Ping Luo, Chen Change Loy, Xiaoou Tang

We propose a deep convolutional neural network (CNN) for face detection leveraging on facial attributes based supervision.

Face Detection

Robust and Fast Decoding of High-Capacity Color QR Codes for Mobile Applications

1 code implementation21 Apr 2017 Zhibo Yang, Huanle Xu, Jianyuan Deng, Chen Change Loy, Wing Cheong Lau

Particularly, we further discover a new type of chromatic distortion in high-density color QR codes, cross-module color interference, caused by the high density which also makes the geometric distortion correction more challenging.

Face Detection through Scale-Friendly Deep Convolutional Networks

no code implementations9 Jun 2017 Shuo Yang, Yuanjun Xiong, Chen Change Loy, Xiaoou Tang

Specifically, our method achieves 76. 4 average precision on the challenging WIDER FACE dataset and 96% recall rate on the FDDB dataset with 7 frames per second (fps) for 900 * 1300 input image.

Face Detection

Merge or Not? Learning to Group Faces via Imitation Learning

1 code implementation13 Jul 2017 Yue He, Kaidi Cao, Cheng Li, Chen Change Loy

Given a large number of unlabeled face images, face grouping aims at clustering the images into individual identities present in the data.

Clustering Imitation Learning

Aesthetic-Driven Image Enhancement by Adversarial Learning

1 code implementation17 Jul 2017 Yubin Deng, Chen Change Loy, Xiaoou Tang

We introduce EnhanceGAN, an adversarial learning based model that performs automatic image enhancement.

Image Cropping Image Enhancement

Discover and Learn New Objects from Documentaries

1 code implementation CVPR 2017 Kai Chen, Hang Song, Chen Change Loy, Dahua Lin

Despite the remarkable progress in recent years, detecting objects in a new context remains a challenging task.

Object Weakly-supervised Learning

Video Object Segmentation with Re-identification

3 code implementations1 Aug 2017 Xiaoxiao Li, Yuankai Qi, Zhe Wang, Kai Chen, Ziwei Liu, Jianping Shi, Ping Luo, Xiaoou Tang, Chen Change Loy

Specifically, our Video Object Segmentation with Re-identification (VS-ReID) model includes a mask propagation module and a ReID module.

Object Segmentation +4

Quantifying Facial Age by Posterior of Age Comparisons

1 code implementation31 Aug 2017 Yunxuan Zhang, Li Liu, Cheng Li, Chen Change Loy

We introduce a novel approach for annotating large quantity of in-the-wild facial images with high-quality posterior age distribution as labels.

Ranked #7 on Age Estimation on MORPH Album2 (using extra training data)

Age And Gender Classification Age Estimation

Be Your Own Prada: Fashion Synthesis with Structural Coherence

no code implementations ICCV 2017 Shizhan Zhu, Sanja Fidler, Raquel Urtasun, Dahua Lin, Chen Change Loy

In the second stage, a generative model with a newly proposed compositional mapping layer is used to render the final image with precise regions and textures conditioned on this map.

Fashion Synthesis Semantic Segmentation +1

Mix-and-Match Tuning for Self-Supervised Semantic Segmentation

no code implementations2 Dec 2017 Xiaohang Zhan, Ziwei Liu, Ping Luo, Xiaoou Tang, Chen Change Loy

The key of this new form of learning is to design a proxy task (e. g. image colorization), from which a discriminative loss can be formulated on unlabeled data.

Colorization Image Colorization +3

Pose-Robust Face Recognition via Deep Residual Equivariant Mapping

1 code implementation CVPR 2018 Kaidi Cao, Yu Rong, Cheng Li, Xiaoou Tang, Chen Change Loy

However, many contemporary face recognition models still perform relatively poor in processing profile faces compared to frontal faces.

Face Identification Face Recognition +2

Optimizing Video Object Detection via a Scale-Time Lattice

1 code implementation CVPR 2018 Kai Chen, Jiaqi Wang, Shuo Yang, Xingcheng Zhang, Yuanjun Xiong, Chen Change Loy, Dahua Lin

High-performance object detection relies on expensive convolutional networks to compute features, often leading to significant challenges in applications, e. g. those that require detecting objects from video streams in real time.

Object object-detection +1

LiteFlowNet: A Lightweight Convolutional Neural Network for Optical Flow Estimation

4 code implementations CVPR 2018 Tak-Wai Hui, Xiaoou Tang, Chen Change Loy

FlowNet2, the state-of-the-art convolutional neural network (CNN) for optical flow estimation, requires over 160M parameters to achieve accurate flow estimation.

Optical Flow Estimation

Deep Imbalanced Learning for Face Recognition and Attribute Prediction

1 code implementation1 Jun 2018 Chen Huang, Yining Li, Chen Change Loy, Xiaoou Tang

Data for face analysis often exhibit highly-skewed class distribution, i. e., most data belong to a few majority classes, while the minority classes only contain a scarce amount of instances.

Attribute Face Recognition +1

Non-Local Recurrent Network for Image Restoration

1 code implementation NeurIPS 2018 Ding Liu, Bihan Wen, Yuchen Fan, Chen Change Loy, Thomas S. Huang

The main contributions of this work are: (1) Unlike existing methods that measure self-similarity in an isolated manner, the proposed non-local module can be flexibly integrated into existing deep networks for end-to-end training to capture deep feature correlation between each location and its neighborhood.

Feature Correlation Image Denoising +2

Zoom-Net: Mining Deep Feature Interactions for Visual Relationship Recognition

no code implementations ECCV 2018 Guojun Yin, Lu Sheng, Bin Liu, Nenghai Yu, Xiaogang Wang, Jing Shao, Chen Change Loy

We show that by encouraging deep message propagation and interactions between local object features and global predicate features, one can achieve compelling performance in recognizing complex relationships without using any linguistic priors.

Object

The Devil of Face Recognition is in the Noise

2 code implementations ECCV 2018 Fei Wang, Liren Chen, Cheng Li, Shiyao Huang, Yanjie Chen, Chen Qian, Chen Change Loy

2) With the original datasets and cleaned subsets, we profile and analyze label noise properties of MegaFace and MS-Celeb-1M.

Face Recognition

ESRGAN: Enhanced Super-Resolution Generative Adversarial Networks

45 code implementations1 Sep 2018 Xintao Wang, Ke Yu, Shixiang Wu, Jinjin Gu, Yihao Liu, Chao Dong, Chen Change Loy, Yu Qiao, Xiaoou Tang

To further enhance the visual quality, we thoroughly study three key components of SRGAN - network architecture, adversarial loss and perceptual loss, and improve each of them to derive an Enhanced SRGAN (ESRGAN).

Face Hallucination Generative Adversarial Network +2

PSANet: Point-wise Spatial Attention Network for Scene Parsing

4 code implementations ECCV 2018 Hengshuang Zhao, Yi Zhang, Shu Liu, Jianping Shi, Chen Change Loy, Dahua Lin, Jiaya Jia

We notice information flow in convolutional neural networks is restricted inside local neighborhood regions due to the physical design of convolutional filters, which limits the overall understanding of complex scenes.

Position Scene Parsing +1

Consensus-Driven Propagation in Massive Unlabeled Data for Face Recognition

4 code implementations ECCV 2018 Xiaohang Zhan, Ziwei Liu, Junjie Yan, Dahua Lin, Chen Change Loy

Face recognition has witnessed great progress in recent years, mainly attributed to the high-capacity model designed and the abundant labeled data collected.

Face Recognition

Improving On-policy Learning with Statistical Reward Accumulation

no code implementations7 Sep 2018 Yubin Deng, Ke Yu, Dahua Lin, Xiaoou Tang, Chen Change Loy

Most methods in deep-RL achieve good results via the maximization of the reward signal provided by the environment, typically in the form of discounted cumulative returns.

Atari Games

Unsupervised Disentangling Structure and Appearance

no code implementations27 Sep 2018 Wayne Wu, Kaidi Cao, Cheng Li, Chen Qian, Chen Change Loy

It is challenging to disentangle an object into two orthogonal spaces of structure and appearance since each can influence the visual observation in a different and unpredictable way.

Disentanglement

Learning to Steer by Mimicking Features from Heterogeneous Auxiliary Networks

2 code implementations7 Nov 2018 Yuenan Hou, Zheng Ma, Chunxiao Liu, Chen Change Loy

In this paper, we considerably improve the accuracy and robustness of predictions through heterogeneous auxiliary networks feature mimicking, a new and effective training method that provides us with much richer contextual signals apart from steering direction.

Image Segmentation Multi-Task Learning +3

Deep Network Interpolation for Continuous Imagery Effect Transition

2 code implementations CVPR 2019 Xintao Wang, Ke Yu, Chao Dong, Xiaoou Tang, Chen Change Loy

Deep convolutional neural network has demonstrated its capability of learning a deterministic mapping for the desired imagery effect.

Image Restoration Image-to-Image Translation +2

Instance-level Facial Attributes Transfer with Geometry-Aware Flow

no code implementations30 Nov 2018 Weidong Yin, Ziwei Liu, Chen Change Loy

Geometry-aware flow is able to warp the source face attribute into the target face context and generate a warp-and-blend result.

Attribute Hallucination

An Embarrassingly Simple Approach for Knowledge Distillation

1 code implementation5 Dec 2018 Mengya Gao, Yujun Shen, Quanquan Li, Junjie Yan, Liang Wan, Dahua Lin, Chen Change Loy, Xiaoou Tang

Knowledge Distillation (KD) aims at improving the performance of a low-capacity student model by inheriting knowledge from a high-capacity teacher model.

Face Recognition Knowledge Distillation +3

Region Proposal by Guided Anchoring

1 code implementation CVPR 2019 Jiaqi Wang, Kai Chen, Shuo Yang, Chen Change Loy, Dahua Lin

State-of-the-art detectors mostly rely on a dense anchoring scheme, where anchors are sampled uniformly over the spatial domain with a predefined set of scales and aspect ratios.

object-detection Object Detection +1

Hybrid Task Cascade for Instance Segmentation

5 code implementations CVPR 2019 Kai Chen, Jiangmiao Pang, Jiaqi Wang, Yu Xiong, Xiaoxiao Li, Shuyang Sun, Wansen Feng, Ziwei Liu, Jianping Shi, Wanli Ouyang, Chen Change Loy, Dahua Lin

In exploring a more effective approach, we find that the key to a successful instance segmentation cascade is to fully leverage the reciprocal relationship between detection and segmentation.

Instance Segmentation object-detection +4

Unsupervised Bi-directional Flow-based Video Generation from one Snapshot

no code implementations3 Mar 2019 Lu Sheng, Junting Pan, Jiaming Guo, Jing Shao, Xiaogang Wang, Chen Change Loy

Imagining multiple consecutive frames given one single snapshot is challenging, since it is difficult to simultaneously predict diverse motions from a single image and faithfully generate novel frames without visual distortions.

Video Generation

A Lightweight Optical Flow CNN -- Revisiting Data Fidelity and Regularization

3 code implementations15 Mar 2019 Tak-Wai Hui, Xiaoou Tang, Chen Change Loy

Over four decades, the majority addresses the problem of optical flow estimation using variational methods.

Optical Flow Estimation

Self-Supervised Learning via Conditional Motion Propagation

1 code implementation CVPR 2019 Xiaohang Zhan, Xingang Pan, Ziwei Liu, Dahua Lin, Chen Change Loy

Instead of explicitly modeling the motion probabilities, we design the pretext task as a conditional motion propagation problem.

Human Parsing Instance Segmentation +2

Dense Intrinsic Appearance Flow for Human Pose Transfer

1 code implementation CVPR 2019 Yining Li, Chen Huang, Chen Change Loy

Unlike existing methods, we propose to estimate dense and intrinsic 3D appearance flow to better guide the transfer of pixels between poses.

Pose Transfer

Learning to Cluster Faces on an Affinity Graph

3 code implementations CVPR 2019 Lei Yang, Xiaohang Zhan, Dapeng Chen, Junjie Yan, Chen Change Loy, Dahua Lin

Face recognition sees remarkable progress in recent years, and its performance has reached a very high level.

Clustering Face Recognition +1

Prime Sample Attention in Object Detection

1 code implementation CVPR 2020 Yuhang Cao, Kai Chen, Chen Change Loy, Dahua Lin

Our experiments demonstrate that it is often more effective to focus on prime samples than hard samples when training a detector.

Object object-detection +1

TransGaGa: Geometry-Aware Unsupervised Image-to-Image Translation

no code implementations CVPR 2019 Wayne Wu, Kaidi Cao, Cheng Li, Chen Qian, Chen Change Loy

Extensive experiments demonstrate the superior performance of our method to other state-of-the-art approaches, especially in the challenging near-rigid and non-rigid objects translation tasks.

Translation Unsupervised Image-To-Image Translation

Path-Restore: Learning Network Path Selection for Image Restoration

1 code implementation23 Apr 2019 Ke Yu, Xintao Wang, Chao Dong, Xiaoou Tang, Chen Change Loy

To leverage this, we propose Path-Restore, a multi-path CNN with a pathfinder that can dynamically select an appropriate route for each image region.

Denoising Image Restoration +1

EDVR: Video Restoration with Enhanced Deformable Convolutional Networks

11 code implementations7 May 2019 Xintao Wang, Kelvin C. K. Chan, Ke Yu, Chao Dong, Chen Change Loy

In this work, we propose a novel Video Restoration framework with Enhanced Deformable networks, termed EDVR, to address these challenges.

Deblurring Video Enhancement +2

Deep Flow-Guided Video Inpainting

2 code implementations CVPR 2019 Rui Xu, Xiaoxiao Li, Bolei Zhou, Chen Change Loy

Then the synthesized flow field is used to guide the propagation of pixels to fill up the missing regions in the video.

One-shot visual object segmentation Optical Flow Estimation +2

Disentangling Content and Style via Unsupervised Geometry Distillation

1 code implementation ICLR Workshop DeepGenStruct 2019 Wayne Wu, Kaidi Cao, Cheng Li, Chen Qian, Chen Change Loy

It is challenging to disentangle an object into two orthogonal spaces of content and style since each can influence the visual observation differently and unpredictably.

Disentanglement

Learning Lightweight Lane Detection CNNs by Self Attention Distillation

2 code implementations ICCV 2019 Yuenan Hou, Zheng Ma, Chunxiao Liu, Chen Change Loy

Training deep models for lane detection is challenging due to the very subtle and sparse supervisory signals inherent in lane annotations.

Knowledge Distillation Lane Detection +1

One-shot Face Reenactment

2 code implementations5 Aug 2019 Yunxuan Zhang, Siwei Zhang, Yue He, Cheng Li, Chen Change Loy, Ziwei Liu

However, in real-world scenario end-users often only have one target face at hand, rendering existing methods inapplicable.

Face Reconstruction Face Reenactment

Delving Deep Into Hybrid Annotations for 3D Human Recovery in the Wild

1 code implementation ICCV 2019 Yu Rong, Ziwei Liu, Cheng Li, Kaidi Cao, Chen Change Loy

Specifically, we focus on the challenging task of in-the-wild 3D human recovery from single images when paired 3D annotations are not fully available.

Robust Multi-Modality Multi-Object Tracking

1 code implementation ICCV 2019 Wenwei Zhang, Hui Zhou, Shuyang Sun, Zhe Wang, Jianping Shi, Chen Change Loy

Multi-sensor perception is crucial to ensure the reliability and accuracy in autonomous driving system, while multi-object tracking (MOT) improves that by tracing sequential movement of dynamic objects.

Autonomous Driving Multi-Object Tracking +2

Learning to Synthesize Fashion Textures

no code implementations18 Nov 2019 Wu Shi, Tak-Wai Hui, Ziwei Liu, Dahua Lin, Chen Change Loy

Another important observation is that fashion textures are multi-modal.

Side-Aware Boundary Localization for More Precise Object Detection

3 code implementations ECCV 2020 Jiaqi Wang, Wenwei Zhang, Yuhang Cao, Kai Chen, Jiangmiao Pang, Tao Gong, Jianping Shi, Chen Change Loy, Dahua Lin

To tackle the difficulty of precise localization in the presence of displacements with large variance, we further propose a two-step localization scheme, which first predicts a range of movement through bucket prediction and then pinpoints the precise position within the predicted bucket.

Object object-detection +2

EcoNAS: Finding Proxies for Economical Neural Architecture Search

no code implementations CVPR 2020 Dongzhan Zhou, Xinchi Zhou, Wenwei Zhang, Chen Change Loy, Shuai Yi, Xuesen Zhang, Wanli Ouyang

While many methods have been proposed to improve the efficiency of NAS, the search progress is still laborious because training and evaluating plausible architectures over large search space is time-consuming.

Neural Architecture Search

Everybody's Talkin': Let Me Talk as You Want

no code implementations15 Jan 2020 Linsen Song, Wayne Wu, Chen Qian, Ran He, Chen Change Loy

The audio-translated expression parameters are then used to synthesize a photo-realistic human subject in each video frame, with the movement of the mouth regions precisely mapped to the source audio.

3D Face Reconstruction

Zero-Reference Deep Curve Estimation for Low-Light Image Enhancement

9 code implementations CVPR 2020 Chunle Guo, Chongyi Li, Jichang Guo, Chen Change Loy, Junhui Hou, Sam Kwong, Runmin Cong

The paper presents a novel method, Zero-Reference Deep Curve Estimation (Zero-DCE), which formulates light enhancement as a task of image-specific curve estimation with a deep network.

Color Constancy Face Detection +1

Real or Not Real, that is the Question

2 code implementations ICLR 2020 Yuanbo Xiangli, Yubin Deng, Bo Dai, Chen Change Loy, Dahua Lin

While generative adversarial networks (GAN) have been widely adopted in various topics, in this paper we generalize the standard GAN to a new perspective by treating realness as a random variable that can be estimated from multiple angles.

Residual Knowledge Distillation

no code implementations21 Feb 2020 Mengya Gao, Yujun Shen, Quanquan Li, Chen Change Loy

Knowledge distillation (KD) is one of the most potent ways for model compression.

Knowledge Distillation Model Compression

1st Place Solutions for OpenImage2019 -- Object Detection and Instance Segmentation

2 code implementations17 Mar 2020 Yu Liu, Guanglu Song, Yuhang Zang, Yan Gao, Enze Xie, Junjie Yan, Chen Change Loy, Xiaogang Wang

Given such good instance bounding box, we further design a simple instance-level semantic segmentation pipeline and achieve the 1st place on the segmentation challenge.

General Classification Instance Segmentation +6

TransMoMo: Invariance-Driven Unsupervised Video Motion Retargeting

no code implementations CVPR 2020 Zhuoqian Yang, Wentao Zhu, Wayne Wu, Chen Qian, Qiang Zhou, Bolei Zhou, Chen Change Loy

We present a lightweight video motion retargeting approach TransMoMo that is capable of transferring motion of a person in a source video realistically to another video of a target person.

motion retargeting

Learning to Cluster Faces via Confidence and Connectivity Estimation

3 code implementations CVPR 2020 Lei Yang, Dapeng Chen, Xiaohang Zhan, Rui Zhao, Chen Change Loy, Dahua Lin

With the vertex confidence and edge connectivity, we can naturally organize more relevant vertices on the affinity graph and group them into clusters.

Clustering Connectivity Estimation +2

Self-Supervised Scene De-occlusion

2 code implementations CVPR 2020 Xiaohang Zhan, Xingang Pan, Bo Dai, Ziwei Liu, Dahua Lin, Chen Change Loy

This is achieved via Partial Completion Network (PCNet)-mask (M) and -content (C), that learn to recover fractions of object masks and contents, respectively, in a self-supervised manner.

Image Manipulation Scene Understanding

Feature Pyramid Grids

1 code implementation7 Apr 2020 Kai Chen, Yuhang Cao, Chen Change Loy, Dahua Lin, Christoph Feichtenhofer

Feature pyramid networks have been widely adopted in the object detection literature to improve feature representations for better handling of variations in scale.

Neural Architecture Search object-detection +2

Inter-Region Affinity Distillation for Road Marking Segmentation

1 code implementation CVPR 2020 Yuenan Hou, Zheng Ma, Chunxiao Liu, Tak-Wai Hui, Chen Change Loy

We study the problem of distilling knowledge from a large deep teacher network to a much smaller student network for the task of road marking segmentation.

Knowledge Distillation Lane Detection +1

Knowledge Distillation Meets Self-Supervision

2 code implementations ECCV 2020 Guodong Xu, Ziwei Liu, Xiaoxiao Li, Chen Change Loy

Knowledge distillation, which involves extracting the "dark knowledge" from a teacher network to guide the learning of a student network, has emerged as an important technique for model compression and transfer learning.

Contrastive Learning Knowledge Distillation +2

Cross-Scale Internal Graph Neural Network for Image Super-Resolution

1 code implementation NeurIPS 2020 Shangchen Zhou, Jiawei Zhang, WangMeng Zuo, Chen Change Loy

Specifically, we dynamically construct a cross-scale graph by searching k-nearest neighboring patches in the downsampled LR image for each query patch in the LR image.

Image Restoration Image Super-Resolution

MessyTable: Instance Association in Multiple Camera Views

no code implementations ECCV 2020 Zhongang Cai, Junzhe Zhang, Daxuan Ren, Cunjun Yu, Haiyu Zhao, Shuai Yi, Chai Kiat Yeo, Chen Change Loy

We present an interesting and challenging dataset that features a large number of scenes with messy tables captured from multiple camera views.

Delving into Inter-Image Invariance for Unsupervised Visual Representations

2 code implementations26 Aug 2020 Jiahao Xie, Xiaohang Zhan, Ziwei Liu, Yew Soon Ong, Chen Change Loy

In this work, we present a comprehensive empirical study to better understand the role of inter-image invariance learning from three main constituting components: pseudo-label maintenance, sampling strategy, and decision boundary design.

Contrastive Learning Pseudo Label +1

Understanding Deformable Alignment in Video Super-Resolution

no code implementations15 Sep 2020 Kelvin C. K. Chan, Xintao Wang, Ke Yu, Chao Dong, Chen Change Loy

Aside from the contributions to deformable alignment, our formulation inspires a more flexible approach to introduce offset diversity to flow-based alignment, improving its performance.

Optical Flow Estimation Video Super-Resolution

Texture Memory-Augmented Deep Patch-Based Image Inpainting

1 code implementation28 Sep 2020 Rui Xu, Minghao Guo, Jiaqi Wang, Xiaoxiao Li, Bolei Zhou, Chen Change Loy

By bringing together the best of both paradigms, we propose a new deep inpainting framework where texture generation is guided by a texture memory of patch samples extracted from unmasked regions.

Image Inpainting Retrieval +1

Flexible Piecewise Curves Estimation for Photo Enhancement

no code implementations26 Oct 2020 Chongyi Li, Chunle Guo, Qiming Ai, Shangchen Zhou, Chen Change Loy

This paper presents a new method, called FlexiCurve, for photo enhancement.

Do 2D GANs Know 3D Shape? Unsupervised 3D shape reconstruction from 2D Image GANs

1 code implementation ICLR 2021 Xingang Pan, Bo Dai, Ziwei Liu, Chen Change Loy, Ping Luo

Through our investigation, we found that such a pre-trained GAN indeed contains rich 3D knowledge and thus can be used to recover 3D shape from a single 2D image in an unsupervised manner.

3D Shape Reconstruction Object

GLEAN: Generative Latent Bank for Large-Factor Image Super-Resolution

no code implementations CVPR 2021 Kelvin C. K. Chan, Xintao Wang, Xiangyu Xu, Jinwei Gu, Chen Change Loy

We show that pre-trained Generative Adversarial Networks (GANs), e. g., StyleGAN, can be used as a latent bank to improve the restoration quality of large-factor image super-resolution (SR).

Image Super-Resolution

CARAFE++: Unified Content-Aware ReAssembly of FEatures

no code implementations7 Dec 2020 Jiaqi Wang, Kai Chen, Rui Xu, Ziwei Liu, Chen Change Loy, Dahua Lin

Feature reassembly, i. e. feature downsampling and upsampling, is a key operation in a number of modern convolutional network architectures, e. g., residual networks and feature pyramids.

Image Inpainting Instance Segmentation +3

Positional Encoding as Spatial Inductive Bias in GANs

no code implementations CVPR 2021 Rui Xu, Xintao Wang, Kai Chen, Bolei Zhou, Chen Change Loy

In this work, taking SinGAN and StyleGAN2 as examples, we show that such capability, to a large extent, is brought by the implicit positional encoding when using zero padding in the generators.

Image Manipulation Inductive Bias +1

Computation-Efficient Knowledge Distillation via Uncertainty-Aware Mixup

1 code implementation17 Dec 2020 Guodong Xu, Ziwei Liu, Chen Change Loy

Our goal is to achieve a performance comparable to conventional knowledge distillation with a lower computation cost during training.

Informativeness Knowledge Distillation +2

Exploring Data Augmentation for Multi-Modality 3D Object Detection

8 code implementations23 Dec 2020 Wenwei Zhang, Zhe Wang, Chen Change Loy

Due to the fact that multi-modality data augmentation must maintain consistency between point cloud and images, recent methods in this field typically use relatively insufficient data augmentation.

3D Object Detection Autonomous Driving +3

Chasing the Tail in Monocular 3D Human Reconstruction with Prototype Memory

no code implementations29 Dec 2020 Yu Rong, Ziwei Liu, Chen Change Loy

The reason is that most of the current models perform regression based on a single human prototype, which is similar to common poses while far from the rare poses.

3D Human Reconstruction regression

FASA: Feature Augmentation and Sampling Adaptation for Long-Tailed Instance Segmentation

1 code implementation ICCV 2021 Yuhang Zang, Chen Huang, Chen Change Loy

We propose a simple yet effective method, Feature Augmentation and Sampling Adaptation (FASA), that addresses the data scarcity issue by augmenting the feature space especially for rare classes.

Instance Segmentation Segmentation +2

Learning to Enhance Low-Light Image via Zero-Reference Deep Curve Estimation

4 code implementations1 Mar 2021 Chongyi Li, Chunle Guo, Chen Change Loy

This paper presents a novel method, Zero-Reference Deep Curve Estimation (Zero-DCE), which formulates light enhancement as a task of image-specific curve estimation with a deep network.

Face Detection Image Enhancement

Network Pruning via Resource Reallocation

1 code implementation2 Mar 2021 Yuenan Hou, Zheng Ma, Chunxiao Liu, Zhe Wang, Chen Change Loy

Channel pruning is broadly recognized as an effective approach to obtain a small compact model through eliminating unimportant channels from a large cumbersome network.

Network Pruning

Domain Generalization: A Survey

2 code implementations3 Mar 2021 Kaiyang Zhou, Ziwei Liu, Yu Qiao, Tao Xiang, Chen Change Loy

Generalization to out-of-distribution (OOD) data is a capability natural to humans yet challenging for machines to reproduce.

Action Recognition Data Augmentation +8

Deep Animation Video Interpolation in the Wild

1 code implementation CVPR 2021 Li SiYao, Shiyu Zhao, Weijiang Yu, Wenxiu Sun, Dimitris N. Metaxas, Chen Change Loy, Ziwei Liu

In the animation industry, cartoon videos are usually produced at low frame rate since hand drawing of such frames is costly and time-consuming.

Optical Flow Estimation Video Frame Interpolation

Everything's Talkin': Pareidolia Face Reenactment

1 code implementation7 Apr 2021 Linsen Song, Wayne Wu, Chaoyou Fu, Chen Qian, Chen Change Loy, Ran He

We present a new application direction named Pareidolia Face Reenactment, which is defined as animating a static illusory face to move in tandem with a human face in the video.

Face Reenactment Texture Synthesis

Audio-Driven Emotional Video Portraits

1 code implementation CVPR 2021 Xinya Ji, Hang Zhou, Kaisiyuan Wang, Wayne Wu, Chen Change Loy, Xun Cao, Feng Xu

In this work, we present Emotional Video Portraits (EVP), a system for synthesizing high-quality video portraits with vivid emotional dynamics driven by audios.

Disentanglement Face Generation

Removing Diffraction Image Artifacts in Under-Display Camera via Dynamic Skip Connection Network

1 code implementation CVPR 2021 Ruicheng Feng, Chongyi Li, Huaijin Chen, Shuai Li, Chen Change Loy, Jinwei Gu

Recent development of Under-Display Camera (UDC) systems provides a true bezel-less and notch-free viewing experience on smartphones (and TV, laptops, tablets), while allowing images to be captured from the selfie camera embedded underneath.

Image Restoration

Low-Light Image and Video Enhancement Using Deep Learning: A Survey

3 code implementations21 Apr 2021 Chongyi Li, Chunle Guo, Linghao Han, Jun Jiang, Ming-Ming Cheng, Jinwei Gu, Chen Change Loy

Low-light image enhancement (LLIE) aims at improving the perception or interpretability of an image captured in an environment with poor illumination.

Face Detection Low-Light Image Enhancement +1

Pose-Controllable Talking Face Generation by Implicitly Modularized Audio-Visual Representation

1 code implementation CVPR 2021 Hang Zhou, Yasheng Sun, Wayne Wu, Chen Change Loy, Xiaogang Wang, Ziwei Liu

While speech content information can be defined by learning the intrinsic synchronization between audio-visual modalities, we identify that a pose code will be complementarily learned in a modulated convolution-based reconstruction framework.

Talking Face Generation

Unsupervised 3D Shape Completion through GAN Inversion

no code implementations CVPR 2021 Junzhe Zhang, Xinyi Chen, Zhongang Cai, Liang Pan, Haiyu Zhao, Shuai Yi, Chai Kiat Yeo, Bo Dai, Chen Change Loy

In contrast to previous fully supervised approaches, in this paper we present ShapeInversion, which introduces Generative Adversarial Network (GAN) inversion to shape completion for the first time.

Generative Adversarial Network valid

BasicVSR++: Improving Video Super-Resolution with Enhanced Propagation and Alignment

3 code implementations CVPR 2022 Kelvin C. K. Chan, Shangchen Zhou, Xiangyu Xu, Chen Change Loy

We show that by empowering the recurrent framework with the enhanced propagation and alignment, one can exploit spatiotemporal information across misaligned video frames more effectively.

Analog Video Restoration Video Enhancement +1

Semi-Supervised Domain Generalization with Stochastic StyleMatch

2 code implementations1 Jun 2021 Kaiyang Zhou, Chen Change Loy, Ziwei Liu

We find that the DG methods, which by design are unable to handle unlabeled data, perform poorly with limited labels in SSDG; the SSL methods, especially FixMatch, obtain much better results but are still far away from the basic vanilla model trained using full labels.

Domain Generalization Semi-Supervised Domain Generalization

Robust Reference-based Super-Resolution via C2-Matching

1 code implementation CVPR 2021 Yuming Jiang, Kelvin C. K. Chan, Xintao Wang, Chen Change Loy, Ziwei Liu

However, performing local transfer is difficult because of two gaps between input and reference images: the transformation gap (e. g. scale and rotation) and the resolution gap (e. g. HR and LR).

Reference-based Super-Resolution

Pareidolia Face Reenactment

no code implementations CVPR 2021 Linsen Song, Wayne Wu, Chaoyou Fu, Chen Qian, Chen Change Loy, Ran He

We present a new application direction named Pareidolia Face Reenactment, which is defined as animating a static illusory face to move in tandem with a human face in the video.

Face Reenactment Texture Synthesis

Unsupervised Object-Level Representation Learning from Scene Images

1 code implementation NeurIPS 2021 Jiahao Xie, Xiaohang Zhan, Ziwei Liu, Yew Soon Ong, Chen Change Loy

Extensive experiments on COCO show that ORL significantly improves the performance of self-supervised learning on scene images, even surpassing supervised ImageNet pre-training on several downstream tasks.

Object Representation Learning +2

K-Net: Towards Unified Image Segmentation

1 code implementation NeurIPS 2021 Wenwei Zhang, Jiangmiao Pang, Kai Chen, Chen Change Loy

The framework, named K-Net, segments both instances and semantic categories consistently by a group of learnable kernels, where each kernel is responsible for generating a mask for either a potential instance or a stuff class.

Image Segmentation Instance Segmentation +2

Learning to Prompt for Vision-Language Models

13 code implementations2 Sep 2021 Kaiyang Zhou, Jingkang Yang, Chen Change Loy, Ziwei Liu

Large pre-trained vision-language models like CLIP have shown great potential in learning representations that are transferable across a wide range of downstream tasks.

Domain Generalization Few-shot Age Estimation +2

3D Human Texture Estimation from a Single Image with Transformers

1 code implementation ICCV 2021 Xiangyu Xu, Chen Change Loy

We propose a Transformer-based framework for 3D human texture estimation from a single image.

Garment Reconstruction

Talk-to-Edit: Fine-Grained Facial Editing via Dialog

1 code implementation ICCV 2021 Yuming Jiang, Ziqi Huang, Xingang Pan, Chen Change Loy, Ziwei Liu

In this work, we propose Talk-to-Edit, an interactive facial editing framework that performs fine-grained attribute manipulation through dialog between the user and the system.

Attribute Facial Editing +1

ReconfigISP: Reconfigurable Camera Image Processing Pipeline

1 code implementation ICCV 2021 Ke Yu, Zexian Li, Yue Peng, Chen Change Loy, Jinwei Gu

Image Signal Processor (ISP) is a crucial component in digital cameras that transforms sensor signals into images for us to perceive and understand.

Image Restoration Neural Architecture Search +2

A Comprehensive Overhaul of Distilling Unconditional GANs

no code implementations29 Sep 2021 Guodong Xu, Yuenan Hou, Ziwei Liu, Chen Change Loy

To further enhance the semantic consistency between the teacher and student model, we present another latent-direction-based distillation loss that preserves the semantic relations in latent space.

Knowledge Distillation

MeshInversion: 3D textured mesh reconstruction with generative prior

no code implementations29 Sep 2021 Junzhe Zhang, Daxuan Ren, Zhongang Cai, Chai Kiat Yeo, Bo Dai, Chen Change Loy

Reconstruction is achieved by searching for a latent space in the 3D GAN that best resembles the target mesh in accordance with the single view observation.

SiT: Simulation Transformer for Particle-based Physics Simulation

no code implementations29 Sep 2021 Yidi Shao, Chen Change Loy, Bo Dai

However, they force particles to interact with all neighbors without selection, and they fall short in capturing material semantics for different particles, leading to unsatisfactory performance, especially in generalization.

Playing for 3D Human Recovery

no code implementations14 Oct 2021 Zhongang Cai, Mingyuan Zhang, Jiawei Ren, Chen Wei, Daxuan Ren, Zhengyu Lin, Haiyu Zhao, Lei Yang, Chen Change Loy, Ziwei Liu

Specifically, we contribute GTA-Human, a large-scale 3D human dataset generated with the GTA-V game engine, featuring a highly diverse set of subjects, actions, and scenarios.

Self-Supervised Representation Learning: Introduction, Advances and Challenges

no code implementations18 Oct 2021 Linus Ericsson, Henry Gouk, Chen Change Loy, Timothy M. Hospedales

Self-supervised representation learning methods aim to provide powerful deep feature learning without the requirement of large annotated datasets, thus alleviating the annotation bottleneck that is one of the main barriers to practical deployment of deep learning today.

Representation Learning

A Shading-Guided Generative Implicit Model for Shape-Accurate 3D-Aware Image Synthesis

1 code implementation NeurIPS 2021 Xingang Pan, Xudong Xu, Chen Change Loy, Christian Theobalt, Bo Dai

Motivated by the observation that a 3D object should look realistic from multiple viewpoints, these methods introduce a multi-view constraint as regularization to learn valid 3D radiance fields from 2D images.

3D-Aware Image Synthesis 3D Shape Reconstruction +2

Monocular 3D Reconstruction of Interacting Hands via Collision-Aware Factorized Refinements

no code implementations1 Nov 2021 Yu Rong, Jingbo Wang, Ziwei Liu, Chen Change Loy

In this paper, we make the first attempt to reconstruct 3D interacting hands from monocular single RGB images.

3D Reconstruction

Deceive D: Adaptive Pseudo Augmentation for GAN Training with Limited Data

2 code implementations NeurIPS 2021 Liming Jiang, Bo Dai, Wayne Wu, Chen Change Loy

Generative adversarial networks (GANs) typically require ample data for training in order to synthesize high-fidelity images.

Extract Free Dense Labels from CLIP

1 code implementation2 Dec 2021 Chong Zhou, Chen Change Loy, Bo Dai

Contrastive Language-Image Pre-training (CLIP) has made a remarkable breakthrough in open-vocabulary zero-shot image recognition.

Novel Concepts Open Vocabulary Panoptic Segmentation +5

MoCaNet: Motion Retargeting in-the-wild via Canonicalization Networks

no code implementations19 Dec 2021 Wentao Zhu, Zhuoqian Yang, Ziang Di, Wayne Wu, Yizhou Wang, Chen Change Loy

Trained with the canonicalization operations and the derived regularizations, our method learns to factorize a skeleton sequence into three independent semantic subspaces, i. e., motion, structure, and view angle.

3D Reconstruction Action Analysis +2

Conditional Prompt Learning for Vision-Language Models

9 code implementations CVPR 2022 Kaiyang Zhou, Jingkang Yang, Chen Change Loy, Ziwei Liu

With the rise of powerful pre-trained vision-language models like CLIP, it becomes essential to investigate ways to adapt these models to downstream datasets.

Domain Generalization Prompt Engineering

Dense Siamese Network for Dense Unsupervised Learning

1 code implementation21 Mar 2022 Wenwei Zhang, Jiangmiao Pang, Kai Chen, Chen Change Loy

It also extracts a batch of region embeddings that correspond to some sub-regions in the overlapped area to be contrasted for region consistency.

Self-Supervised Learning Unsupervised Semantic Segmentation

Open-Vocabulary DETR with Conditional Matching

1 code implementation22 Mar 2022 Yuhang Zang, Wei Li, Kaiyang Zhou, Chen Huang, Chen Change Loy

To this end, we propose a novel open-vocabulary detector based on DETR -- hence the name OV-DETR -- which, once trained, can detect any object given its class name or an exemplar image.

Language Modelling object-detection +1

Pastiche Master: Exemplar-Based High-Resolution Portrait Style Transfer

1 code implementation CVPR 2022 Shuai Yang, Liming Jiang, Ziwei Liu, Chen Change Loy

Recent studies on StyleGAN show high performance on artistic portrait generation by transfer learning with limited data.

Style Transfer Transfer Learning +1

Bailando: 3D Dance Generation by Actor-Critic GPT with Choreographic Memory

1 code implementation CVPR 2022 Li SiYao, Weijiang Yu, Tianpei Gu, Chunze Lin, Quan Wang, Chen Qian, Chen Change Loy, Ziwei Liu

With the learned choreographic memory, dance generation is realized on the quantized units that meet high choreography standards, such that the generated dancing sequences are confined within the spatial constraints.

Motion Synthesis

Unsupervised Image-to-Image Translation with Generative Prior

1 code implementation CVPR 2022 Shuai Yang, Liming Jiang, Ziwei Liu, Chen Change Loy

In this work, we present a novel framework, Generative Prior-guided UNsupervised Image-to-image Translation (GP-UNIT), to improve the overall quality and applicability of the translation algorithm.

Translation Unsupervised Image-To-Image Translation

On the Generalization of BasicVSR++ to Video Deblurring and Denoising

1 code implementation11 Apr 2022 Kelvin C. K. Chan, Shangchen Zhou, Xiangyu Xu, Chen Change Loy

The exploitation of long-term information has been a long-standing problem in video restoration.

Deblurring Denoising +2

StyleGAN-Human: A Data-Centric Odyssey of Human Generation

4 code implementations25 Apr 2022 Jianglin Fu, Shikai Li, Yuming Jiang, Kwan-Yee Lin, Chen Qian, Chen Change Loy, Wayne Wu, Ziwei Liu

In addition, a model zoo and human editing applications are demonstrated to facilitate future research in the community.

Image Generation

Delving into High-Quality Synthetic Face Occlusion Segmentation Datasets

3 code implementations12 May 2022 Kenny T. R. Voo, Liming Jiang, Chen Change Loy

This paper performs comprehensive analysis on datasets for occlusion-aware face segmentation, a task that is crucial for many downstream applications.

Segmentation Synthetic Data Generation +1

Text2Human: Text-Driven Controllable Human Image Generation

2 code implementations31 May 2022 Yuming Jiang, Shuai Yang, Haonan Qiu, Wayne Wu, Chen Change Loy, Ziwei Liu

In this work, we present a text-driven controllable framework, Text2Human, for a high-quality and diverse human generation.

Human Parsing Image Generation

Point-to-Voxel Knowledge Distillation for LiDAR Semantic Segmentation

no code implementations CVPR 2022 Yuenan Hou, Xinge Zhu, Yuexin Ma, Chen Change Loy, Yikang Li

This article addresses the problem of distilling knowledge from a large teacher model to a slim student network for LiDAR semantic segmentation.

Ranked #8 on LIDAR Semantic Segmentation on nuScenes (val mIoU metric)

3D Semantic Segmentation Knowledge Distillation +1

Masked Frequency Modeling for Self-Supervised Visual Pre-Training

3 code implementations15 Jun 2022 Jiahao Xie, Wei Li, Xiaohang Zhan, Ziwei Liu, Yew Soon Ong, Chen Change Loy

We present Masked Frequency Modeling (MFM), a unified frequency-domain-based approach for self-supervised pre-training of visual models.

Image Classification Image Restoration +2

Towards Robust Blind Face Restoration with Codebook Lookup Transformer

1 code implementation22 Jun 2022 Shangchen Zhou, Kelvin C. K. Chan, Chongyi Li, Chen Change Loy

In this paper, we demonstrate that a learned discrete codebook prior in a small proxy space largely reduces the uncertainty and ambiguity of restoration mapping by casting blind face restoration as a code prediction task, while providing rich visual atoms for generating high-quality faces.

Blind Face Restoration

BRACE: The Breakdancing Competition Dataset for Dance Motion Synthesis

1 code implementation20 Jul 2022 Davide Moltisanti, Jinyi Wu, Bo Dai, Chen Change Loy

Estimating human keypoints from these videos is difficult due to the complexity of the dance, as well as the multiple moving cameras recording setup.

Motion Synthesis Pose Estimation

Monocular 3D Object Reconstruction with GAN Inversion

1 code implementation20 Jul 2022 Junzhe Zhang, Daxuan Ren, Zhongang Cai, Chai Kiat Yeo, Bo Dai, Chen Change Loy

Reconstruction is achieved by searching for a latent space in the 3D GAN that best resembles the target mesh in accordance with the single view observation.

3D Object Reconstruction Object

Transformer with Implicit Edges for Particle-based Physics Simulation

1 code implementation22 Jul 2022 Yidi Shao, Chen Change Loy, Bo Dai

Consequently, in this paper we propose a novel Transformer-based method, dubbed as Transformer with Implicit Edges (TIE), to capture the rich semantics of particle interactions in an edge-free manner.

CelebV-HQ: A Large-Scale Video Facial Attributes Dataset

1 code implementation25 Jul 2022 Hao Zhu, Wayne Wu, Wentao Zhu, Liming Jiang, Siwei Tang, Li Zhang, Ziwei Liu, Chen Change Loy

Large-scale datasets have played indispensable roles in the recent success of face generation/editing and significantly facilitated the advances of emerging research fields.

Attribute Face Generation +1

CuDi: Curve Distillation for Efficient and Controllable Exposure Adjustment

no code implementations28 Jul 2022 Chongyi Li, Chunle Guo, Ruicheng Feng, Shangchen Zhou, Chen Change Loy

Our method inherits the zero-reference learning and curve-based framework from an effective low-light image enhancement method, Zero-DCE, with further speed up in its inference speed, reduction in its model size, and extension to controllable exposure adjustment.

Low-Light Image Enhancement

GLEAN: Generative Latent Bank for Image Super-Resolution and Beyond

1 code implementation29 Jul 2022 Kelvin C. K. Chan, Xiangyu Xu, Xintao Wang, Jinwei Gu, Chen Change Loy

While most existing perceptual-oriented approaches attempt to generate realistic outputs through learning with adversarial loss, our method, Generative LatEnt bANk (GLEAN), goes beyond existing practices by directly leveraging rich and diverse priors encapsulated in a pre-trained GAN.

Colorization Image Colorization +2

StyleLight: HDR Panorama Generation for Lighting Estimation and Editing

1 code implementation29 Jul 2022 Guangcong Wang, Yinuo Yang, Chen Change Loy, Ziwei Liu

To tackle this problem, we propose a coupled dual-StyleGAN panorama synthesis network (StyleLight) that integrates LDR and HDR panorama synthesis into a unified framework.

Lighting Estimation

Mind the Gap in Distilling StyleGANs

1 code implementation18 Aug 2022 Guodong Xu, Yuenan Hou, Ziwei Liu, Chen Change Loy

To further enhance the semantic consistency between the teacher and student model, we present a latent-direction-based distillation loss that preserves the semantic relations in latent space.

Knowledge Distillation

On-Device Domain Generalization

2 code implementations15 Sep 2022 Kaiyang Zhou, Yuanhan Zhang, Yuhang Zang, Jingkang Yang, Chen Change Loy, Ziwei Liu

Another interesting observation is that the teacher-student gap on out-of-distribution data is bigger than that on in-distribution data, which highlights the capacity mismatch issue as well as the shortcoming of KD.

Data Augmentation Domain Generalization +2

VToonify: Controllable High-Resolution Portrait Video Style Transfer

1 code implementation22 Sep 2022 Shuai Yang, Liming Jiang, Ziwei Liu, Chen Change Loy

Although a series of successful portrait image toonification models built upon the powerful StyleGAN have been proposed, these image-oriented methods have obvious limitations when applied to videos, such as the fixed frame size, the requirement of face alignment, missing non-facial details and temporal inconsistency.

Face Alignment Style Transfer +2

Deep Fourier Up-Sampling

1 code implementation11 Oct 2022 Man Zhou, Hu Yu, Jie Huang, Feng Zhao, Jinwei Gu, Chen Change Loy, Deyu Meng, Chongyi Li

Existing convolutional neural networks widely adopt spatial down-/up-sampling for multi-scale modeling.

Image Dehazing Image Segmentation +4

Flare7K: A Phenomenological Nighttime Flare Removal Dataset

1 code implementation12 Oct 2022 Yuekun Dai, Chongyi Li, Shangchen Zhou, Ruicheng Feng, Chen Change Loy

In this paper, we introduce, Flare7K, the first nighttime flare removal dataset, which is generated based on the observation and statistics of real-world nighttime lens flares.

Flare Removal

Unified Vision and Language Prompt Learning

1 code implementation13 Oct 2022 Yuhang Zang, Wei Li, Kaiyang Zhou, Chen Huang, Chen Change Loy

Prompt tuning, a parameter- and data-efficient transfer learning paradigm that tunes only a small number of parameters in a model's input space, has become a trend in the vision community since the emergence of large vision-language models like CLIP.

Domain Generalization Few-Shot Learning +2

AnimeRun: 2D Animation Visual Correspondence from Open Source 3D Movies

1 code implementation10 Nov 2022 Li SiYao, Yuhang Li, Bo Li, Chao Dong, Ziwei Liu, Chen Change Loy

Existing correspondence datasets for two-dimensional (2D) cartoon suffer from simple frame composition and monotonic movements, making them insufficient to simulate real animations.

Optical Flow Estimation

BeautyREC: Robust, Efficient, and Content-preserving Makeup Transfer

no code implementations12 Dec 2022 Qixin Yan, Chunle Guo, Jixin Zhao, Yuekun Dai, Chen Change Loy, Chongyi Li

The key insights of this study are modeling component-specific correspondence for local makeup transfer, capturing long-range dependencies for global makeup transfer, and enabling efficient makeup transfer via a single-path structure.

DifFace: Blind Face Restoration with Diffused Error Contraction

2 code implementations13 Dec 2022 Zongsheng Yue, Chen Change Loy

Moreover, the transition distribution can contract the error of the restoration backbone and thus makes our method more robust to unknown degradations.

Blind Face Restoration

Self-Supervised Geometry-Aware Encoder for Style-Based 3D GAN Inversion

no code implementations CVPR 2023 Yushi Lan, Xuyi Meng, Shuai Yang, Chen Change Loy, Bo Dai

In this paper, we study the challenging problem of 3D GAN inversion where a latent code is predicted given a single face image to faithfully recover its 3D shapes and detailed textures.

3D Face Reconstruction

Reference-based Image and Video Super-Resolution via C2-Matching

1 code implementation19 Dec 2022 Yuming Jiang, Kelvin C. K. Chan, Xintao Wang, Chen Change Loy, Ziwei Liu

To tackle these challenges, we propose C2-Matching in this work, which performs explicit robust matching crossing transformation and resolution.

Image Super-Resolution Reference-based Super-Resolution +2

Correspondence Distillation from NeRF-based GAN

no code implementations19 Dec 2022 Yushi Lan, Chen Change Loy, Bo Dai

The neural radiance field (NeRF) has shown promising results in preserving the fine details of objects and scenes.

DeformToon3D: Deformable Neural Radiance Fields for 3D Toonification

no code implementations ICCV 2023 Junzhe Zhang, Yushi Lan, Shuai Yang, Fangzhou Hong, Quan Wang, Chai Kiat Yeo, Ziwei Liu, Chen Change Loy

In this paper, we address the challenging problem of 3D toonification, which involves transferring the style of an artistic domain onto a target 3D face with stylized geometry and texture.

Betrayed by Captions: Joint Caption Grounding and Generation for Open Vocabulary Instance Segmentation

2 code implementations ICCV 2023 Jianzong Wu, Xiangtai Li, Henghui Ding, Xia Li, Guangliang Cheng, Yunhai Tong, Chen Change Loy

Experiments on the COCO dataset with two settings: Open Vocabulary Instance Segmentation (OVIS) and Open Set Panoptic Segmentation (OSPS) demonstrate the superiority of the CGG.

Caption Generation Instance Segmentation +2

Cannot find the paper you are looking for? You can Submit a new open access paper.