no code implementations • ECCV 2020 • Kaihao Zhang, Wenhan Luo, Wenqi Ren, Jingwen Wang Fang Zhao, Lin Ma , Hongdong Li
Moreover, even for single image based monocular deraining, many current methods fail to complete the task satisfactorily because they mostly rely on per pixel loss functions and ignoring semantic information.
1 code implementation • ECCV 2020 • Zhenbo Song, Wayne Chen, Dylan Campbell, Hongdong Li
We propose a new deep neural network which takes a colored 3D point cloud of a scene, and directly synthesizes a photo-realistic image from an arbitrary viewpoint.
no code implementations • ACL 2022 • Chenchen Xu, Dongxu Li, Hongdong Li, Hanna Suominen, Ben Swift
A multi-language dictionary is a fundamental tool for language learning, allowing the learner to look up unfamiliar words.
no code implementations • 22 Sep 2023 • Xiaoxiao Sun, Nidham Gazagnadou, Vivek Sharma, Lingjuan Lyu, Hongdong Li, Liang Zheng
Under these metrics, reconstructed images that are determined to resemble the original one generally indicate more privacy leakage.
no code implementations • 19 Sep 2023 • Jiaxin Wei, Xibin Song, Weizhe Liu, Laurent Kneip, Hongdong Li, Pan Ji
While showing promising results, recent RGB-D camera-based category-level object pose estimation methods have restricted applications due to the heavy reliance on depth sensors.
no code implementations • 9 Sep 2023 • Xuanxi Chen, Tao Wang, Ziqian Shao, Kaihao Zhang, Wenhan Luo, Tong Lu, Zikun Liu, Tae-Kyun Kim, Hongdong Li
With the pipeline, we build the first large-scale UDC video restoration dataset called PexelsUDC, which includes two subsets named PexelsUDC-T and PexelsUDC-P corresponding to different displays for UDC.
no code implementations • 8 Sep 2023 • Ziang Cheng, Jiayu Yang, Hongdong Li
One of the major difficulties is the lack of high-quality indoor video stereo training datasets captured by head-mounted VR/AR glasses.
1 code implementation • ICCV 2023 • Yuwei Qiu, Kaihao Zhang, Chenxi Wang, Wenhan Luo, Hongdong Li, Zhi Jin
To address this issue, we propose a new Transformer variant, which applies the Taylor expansion to approximate the softmax-attention and achieves linear computational complexity.
no code implementations • 18 Aug 2023 • Haorui Ji, Hui Deng, Yuchao Dai, Hongdong Li
Most of the previous 3D human pose estimation work relied on the powerful memory capability of the network to obtain suitable 2D-3D mappings from the training data.
no code implementations • 18 Aug 2023 • Jin Liu, Xiaokang Pan, Junwen Duan, Hongdong Li, Youqi Li, Zhe Qu
Compositional minimax optimization is a pivotal yet under-explored challenge across machine learning, including distributionally robust training and policy evaluation for reinforcement learning.
no code implementations • ICCV 2023 • Shan Wang, Yanhao Zhang, Akhil Perincherry, Ankit Vora, Hongdong Li
This paper proposes a fine-grained self-localization method for outdoor robotics that utilizes a flexible number of onboard cameras and readily accessible satellite images.
1 code implementation • 27 Jul 2023 • Tao Wang, Kaihao Zhang, Ziqian Shao, Wenhan Luo, Bjorn Stenger, Tae-Kyun Kim, Wei Liu, Hongdong Li
In this paper, we address this limitation by proposing a degradation-aware learning scheme for LLIE using diffusion models, which effectively integrates degradation and image priors into the diffusion process, resulting in improved image enhancement.
1 code implementation • 21 Jul 2023 • Ruyi Zha, Xuelian Cheng, Hongdong Li, Mehrtash Harandi, ZongYuan Ge
We constrain the learned shape by tailoring multiple regularization strategies and disentangling geometry and appearance.
1 code implementation • ICCV 2023 • Yujiao Shi, Fei Wu, Akhil Perincherry, Ankit Vora, Hongdong Li
In this paper, we propose a method to increase the accuracy of a ground camera's location and orientation by estimating the relative rotation and translation between the ground-level image and its matched/retrieved satellite image.
no code implementations • 29 May 2023 • Tao Wang, Kaihao Zhang, Ziqian Shao, Wenhan Luo, Bjorn Stenger, Tong Lu, Tae-Kyun Kim, Wei Liu, Hongdong Li
Second, we introduce a residual dense transformer block (RDTB) as the final GridFormer layer.
no code implementations • CVPR 2023 • Xin Huang, Qi Zhang, Ying Feng, Hongdong Li, Qing Wang
In principle, our new implicit neural camera model has the potential to benefit a wide array of other inverse imaging tasks.
1 code implementation • CVPR 2023 • Jinguang Tong, Sundaram Muthu, Fahira Afzal Maken, Chuong Nguyen, Hongdong Li
In this paper, we define a new problem of recovering the 3D geometry of an object confined in a transparent enclosure.
1 code implementation • CVPR 2023 • Ziang Cheng, Junxuan Li, Hongdong Li
Our system recovers scene geometry and reflectance using only multi-view images captured by a smartphone.
1 code implementation • 14 Feb 2023 • Hongguang Zhang, Limeng Zhang, Yuchao Dai, Hongdong Li, Piotr Koniusz
Contemporary deep learning multi-scale deblurring models suffer from many issues: 1) They perform poorly on non-uniformly blurred images/videos; 2) Simply increasing the model depth with finer-scale levels cannot improve deblurring; 3) Individual RGB frames contain a limited motion information for deblurring; 4) Previous models have a limited robustness to spatial transformations and noise.
no code implementations • CVPR 2023 • Junxuan Li, Shunsuke Saito, Tomas Simon, Stephen Lombardi, Hongdong Li, Jason Saragih
However, modeling the geometric and appearance interactions of glasses and the face of virtual representations of humans is challenging.
1 code implementation • 23 Jan 2023 • Huan Lei, Ruitao Leng, Liang Zheng, Hongdong Li
In this paper, we leverage the duality between a triangle and its circumcenter, and introduce a deep neural network that detects the circumcenters to achieve point cloud triangulation.
no code implementations • 20 Jan 2023 • Jianyuan Wang, Ceyuan Yang, Yinghao Xu, Yujun Shen, Hongdong Li, Bolei Zhou
Generative models make huge progress to the photorealistic image synthesis in recent years.
1 code implementation • CVPR 2023 • Yijia He, Bo Xu, Zhanpeng Ouyang, Hongdong Li
We propose a novel visual-inertial odometry (VIO) initialization method, which decouples rotation and translation estimation, and achieves higher efficiency and better robustness.
no code implementations • ICCV 2023 • Shan Wang, Chuong Nguyen, Jiawei Liu, Kaihao Zhang, Wenhan Luo, Yanhao Zhang, Sundaram Muthu, Fahira Afzal Maken, Hongdong Li
Reliable segmentation of road lines and markings is critical to autonomous driving.
no code implementations • CVPR 2023 • Qi Zhang, Hongdong Li, Qing Wang
Despite the proliferation of ultra wide-angle lenses on smartphone cameras, such lenses often come with severe image distortion (e. g. curved linear structure, unnaturally skewed faces).
1 code implementation • 16 Nov 2022 • Rong Wang, Wei Mao, Hongdong Li
In contrast, we propose a novel dense mutual attention mechanism that is able to model fine-grained dependencies between the hand and the object.
1 code implementation • 14 Nov 2022 • Junlin Han, Huangying Zhan, Jie Hong, Pengfei Fang, Hongdong Li, Lars Petersson, Ian Reid
This paper studies the problem of measuring and predicting how memorable an image is to pattern recognition machines, as a path to explore machine intelligence.
1 code implementation • 5 Nov 2022 • Tao Wang, Kaihao Zhang, Xuanxi Chen, Wenhan Luo, Jiankang Deng, Tong Lu, Xiaochun Cao, Wei Liu, Hongdong Li, Stefanos Zafeiriou
Second, we discuss the challenges of face restoration.
1 code implementation • 6 Oct 2022 • Bin Fan, Yuchao Dai, Hongdong Li
The RSSR is a very challenging task, and to our knowledge, no practical solution exists to date.
1 code implementation • 4 Oct 2022 • Wen-Yan Lin, Siying Liu, Bing Tian Dai, Hongdong Li
We use the model to develop a classification scheme which suppresses the impact of noise while preserving semantic cues.
1 code implementation • 29 Sep 2022 • Ruyi Zha, Yanhao Zhang, Hongdong Li
This paper proposes a novel and fast self-supervised solution for sparse-view CBCT reconstruction (Cone Beam Computed Tomography) that requires no external training data.
no code implementations • 7 Aug 2022 • Yujiao Shi, Xin Yu, Shan Wang, Hongdong Li
The critical challenge of this task is to learn a powerful global feature descriptor for the sequential ground-view images while considering its domain alignment with reference satellite images.
no code implementations • 27 Jul 2022 • Shan Wang, Yanhao Zhang, Ankit Vora, Akhil Perincherry, Hongdong Li
This paper introduces a novel approach to cross-view localization that departs from the conventional image retrieval method.
1 code implementation • 16 Jul 2022 • Junxuan Li, Hongdong Li
This paper tackles the task of uncalibrated photometric stereo for 3D object reconstruction, where both the object shape, object reflectance, and lighting directions are unknown.
1 code implementation • 31 May 2022 • Junlin Han, Lars Petersson, Hongdong Li, Ian Reid
We present a simple method, CropMix, for the purpose of producing a rich input distribution from the original dataset distribution.
no code implementations • 21 Apr 2022 • Ziang Cheng, Shihao Jiang, Hongdong Li
This implicit neural representation learns the video as a space-time continuum, allowing frame interpolation at any temporal resolution.
no code implementations • 10 Apr 2022 • Hui Deng, Tong Zhang, Yuchao Dai, Jiawei Shi, Yiran Zhong, Hongdong Li
In this paper, we propose to model deep NRSfM from a sequence-to-sequence translation perspective, where the input 2D frame sequence is taken as a whole to reconstruct the deforming 3D non-rigid shape sequence.
1 code implementation • CVPR 2022 • Yujiao Shi, Hongdong Li
This paper addresses the problem of vehicle-mounted camera localization by matching a ground-level image with an overhead-view satellite map.
no code implementations • 1 Apr 2022 • Qi Zhang, Xin Huang, Ying Feng, Xue Wang, Hongdong Li, Qing Wang
A two-stage network is developed for novel view synthesis.
1 code implementation • 26 Mar 2022 • Yujiao Shi, Xin Yu, Liu Liu, Dylan Campbell, Piotr Koniusz, Hongdong Li
We address the problem of ground-to-satellite image geo-localization, that is, estimating the camera latitude, longitude and orientation (azimuth angle) by matching a query image captured at the ground level against a large-scale database with geotagged satellite images.
1 code implementation • CVPR 2022 • Junxuan Li, Hongdong Li
This network is able to leverage the observed photometric variance and shadows on the surface, and recover both surface shape and general non-Lambertian reflectance.
1 code implementation • 28 Jan 2022 • Junlin Han, Pengfei Fang, Weihao Li, Jie Hong, Mohammad Ali Armin, Ian Reid, Lars Petersson, Hongdong Li
We present You Only Cut Once (YOCO) for performing data augmentations.
no code implementations • 26 Jan 2022 • Kaihao Zhang, Wenqi Ren, Wenhan Luo, Wei-Sheng Lai, Bjorn Stenger, Ming-Hsuan Yang, Hongdong Li
Image deblurring is a classic problem in low-level computer vision with the aim to recover a sharp image from a blurred input image.
1 code implementation • 15 Jan 2022 • Hongguang Zhang, Hongdong Li, Piotr Koniusz
The goal of multi-level feature design is to extract feature representations at different layer-wise levels of CNN, realizing several levels of visual abstraction to achieve robust few-shot learning.
no code implementations • 17 Dec 2021 • Dongxu Li, Chenchen Xu, Liu Liu, Yiran Zhong, Rong Wang, Lars Petersson, Hongdong Li
This work studies the task of glossification, of which the aim is to em transcribe natural spoken language sentences for the Deaf (hard-of-hearing) community to ordered sign language glosses.
1 code implementation • CVPR 2022 • Dongxu Li, Junnan Li, Hongdong Li, Juan Carlos Niebles, Steven C. H. Hoi
To achieve this, we first introduce an entity prompter module, which is trained with VTC to produce the similarity between a video crop and text prompts instantiated with entity names.
Ranked #12 on
Zero-Shot Video Retrieval
on DiDeMo
2 code implementations • 1 Dec 2021 • Kaihao Zhang, Tao Wang, Wenhan Luo, Boheng Chen, Wenqi Ren, Bjorn Stenger, Wei Liu, Hongdong Li, Ming-Hsuan Yang
Blur artifacts can seriously degrade the visual quality of images, and numerous deblurring methods have been proposed for specific scenarios.
1 code implementation • 1 Dec 2021 • Xiaoxiao Sun, Yunzhong Hou, Hongdong Li, Liang Zheng
In the absence of image labels, based on dataset representations, we estimate model performance for AutoEval with regression.
1 code implementation • CVPR 2022 • Jianyuan Wang, Ceyuan Yang, Yinghao Xu, Yujun Shen, Hongdong Li, Bolei Zhou
We further propose to align the spatial awareness of G with the attention map induced from D. Through this way we effectively lessen the information gap between D and G. Extensive results show that our method pushes the two-player game in GANs closer to the equilibrium, leading to a better synthesis performance.
no code implementations • CVPR 2022 • Xin Huang, Qi Zhang, Ying Feng, Hongdong Li, Xuan Wang, Qing Wang
The key to our method is to model the physical imaging process, which dictates that the radiance of a scene point transforms to a pixel value in the LDR image with two implicit functions: a radiance field and a tone mapper.
no code implementations • 28 Nov 2021 • Sahir Shrestha, Mohammad Ali Armin, Hongdong Li, Nick Barnes
Existing deep learning based unsupervised video object segmentation methods still rely on ground-truth segmentation masks to train.
no code implementations • 29 Sep 2021 • Junxuan Li, Hongdong Li
This paper addresses a challenging Photometric-Stereo problem where the object to be reconstructed has unknown, non-Lambertian, and possibly spatially-varying surface materials.
no code implementations • 29 Sep 2021 • Junxuan Li, Yujiao Shi, Hongdong Li
It encodes a complete light-field (\ie, lumigraph) therefore allows one to freely roam in the space and view the scene from any location in any direction.
1 code implementation • 25 Aug 2021 • Junlin Han, Weihao Li, Pengfei Fang, Chunyi Sun, Jie Hong, Mohammad Ali Armin, Lars Petersson, Hongdong Li
We propose and study a novel task named Blind Image Decomposition (BID), which requires separating a superimposed image into constituent underlying images in a blind setting, that is, both the source components involved in mixing as well as the mixing mechanism are unknown.
2 code implementations • ICCV 2021 • Xiaoxiao Sun, Yunzhong Hou, Weijian Deng, Hongdong Li, Liang Zheng
For this problem, we propose to adopt a proxy dataset that 1) is fully labeled and 2) well reflects the true model rankings in a given target environment, and use the performance rankings on the proxy sets as surrogates.
1 code implementation • 20 Jun 2021 • Junlin Han, Mehrdad Shoeiby, Tim Malthus, Elizabeth Botha, Janet Anstee, Saeed Anwar, Ran Wei, Mohammad Ali Armin, Hongdong Li, Lars Petersson
There are 2000 reference restored images and 6003 original underwater images in the unpaired training set.
no code implementations • CVPR 2021 • Junxuan Li, Hongdong Li, Yasuyuki Matsushita
We propose a method for estimating high-definition spatially-varying lighting, reflectance, and geometry of a scene from 360deg stereo images.
no code implementations • CVPR 2021 • Liu Liu, Hongdong Li, Haodong Yao, Ruyi Zha
Aligning two partially-overlapped 3D line reconstructions in Euclidean space is challenging, as we need to simultaneously solve line correspondences and relative pose between reconstructions.
1 code implementation • 17 Jun 2021 • Wei Mao, Miaomiao Liu, Mathieu Salzmann, Hongdong Li
Whether based on recurrent or feed-forward neural networks, existing learning based methods fail to model the observation that human motion tends to repeat itself, even for complex sports actions and cooking activities.
1 code implementation • IEEE Transactions on Pattern Analysis and Machine Intelligence 2021 • Wen-Yan Lin, Siying Liu, Changhao Ren, Ngai-Man Cheung, Hongdong Li, Yasuyuki Matsushita
The foundational assumption of machine learning is that the data under consideration is separable into classes; while intuitively reasonable, separability constraints have proven remarkably difficult to formulate mathematically.
Ranked #1 on
Unsupervised Anomaly Detection with Specified Settings -- 30% anomaly
on CIFAR-10
(using extra training data)
1 code implementation • CVPR 2021 • Ziang Cheng, Hongdong Li, Yuta Asano, Yinqiang Zheng, Imari Sato
Recovering the 3D geometry of a purely texture-less object with generally unknown surface reflectance (e. g. non-Lambertian) is regarded as a challenging task in multi-view reconstruction.
no code implementations • 9 May 2021 • Kaihao Zhang, Wenhan Luo, Yanjiang Yu, Wenqi Ren, Fang Zhao, Changsheng Li, Lin Ma, Wei Liu, Hongdong Li
We first use a coarse deraining network to reduce the rain streaks on the input images, and then adopt a pre-trained semantic segmentation network to extract semantic features from the coarse derained image.
no code implementations • 20 Apr 2021 • Junxuan Li, Hongdong Li, Yasuyuki Matsushita
We propose a method for estimating high-definition spatially-varying lighting, reflectance, and geometry of a scene from 360$^{\circ}$ stereo images.
no code implementations • 11 Apr 2021 • Ziang Cheng, Hongdong Li, Richard Hartley, Yinqiang Zheng, Imari Sato
This paper proposes a simple method which solves an open problem of multi-view 3D-Reconstruction for objects with unknown and generic surface materials, imaged by a freely moving camera and a freely moving point light source.
2 code implementations • ICCV 2021 • Shihao Jiang, Dylan Campbell, Yao Lu, Hongdong Li, Richard Hartley
We demonstrate that the optical flow estimates in the occluded regions can be significantly improved without damaging the performance in non-occluded regions.
Ranked #4 on
Optical Flow Estimation
on Sintel-clean
1 code implementation • CVPR 2021 • Shihao Jiang, Yao Lu, Hongdong Li, Richard Hartley
In this paper, we show that the dense correlation volume representation is redundant and accurate flow estimation can be achieved with only a fraction of elements in it.
Ranked #8 on
Optical Flow Estimation
on KITTI 2015 (train)
1 code implementation • CVPR 2021 • Jianyuan Wang, Yiran Zhong, Yuchao Dai, Stan Birchfield, Kaihao Zhang, Nikolai Smolyanskiy, Hongdong Li
Two-view structure-from-motion (SfM) is the cornerstone of 3D reconstruction and visual SLAM.
Ranked #15 on
Monocular Depth Estimation
on KITTI Eigen split
1 code implementation • CVPR 2021 • Yujiao Shi, Hongdong Li, Xin Yu
We then warp and aggregate source view pixels to synthesize a novel view based on the estimated source-view visibility and target-view depth.
no code implementations • 21 Mar 2021 • Kaihao Zhang, Rongqing Li, Yanjiang Yu, Wenhan Luo, Changsheng Li, Hongdong Li
Images captured in snowy days suffer from noticeable degradation of scene visibility, which degenerates the performance of current vision-based intelligent systems.
no code implementations • CVPR 2021 • Dongxu Li, Chenchen Xu, Kaihao Zhang, Xin Yu, Yiran Zhong, Wenqi Ren, Hanna Suominen, Hongdong Li
Video deblurring models exploit consecutive frames to remove blurs from camera shakes and object motions.
1 code implementation • 2 Mar 2021 • Yujiao Shi, Dylan Campbell, Xin Yu, Hongdong Li
Specifically, we observe that when a 3D point in the real world is visible in both views, there is a deterministic mapping between the projected points in the two-view images given the height information of this 3D point.
no code implementations • ICCV 2021 • Kaihao Zhang, Dongxu Li, Wenhan Luo, Wenqi Ren, Bjorn Stenger, Wei Liu, Hongdong Li, Ming-Hsuan Yang
Increasingly, modern mobile devices allow capturing images at Ultra-High-Definition (UHD) resolution, which includes 4K and 8K images.
no code implementations • 15 Dec 2020 • Yi Zhou, Hongdong Li, Laurent Kneip
The present paper reviews the classical problem of free-form curve registration and applies it to an efficient RGBD visual odometry system called Canny-VO, as it efficiently tracks all Canny edge features extracted from the images.
no code implementations • 6 Dec 2020 • Yiran Zhong, Yuchao Dai, Hongdong Li
More specifically, we represent the desired depth map as a collection of 3D planar and the reconstruction problem is formulated as the optimization of planar parameters.
2 code implementations • 2 Dec 2020 • Liu Liu, Hongdong Li, Haodong Yao, Ruyi Zha
Aligning two partially-overlapped 3D line reconstructions in Euclidean space is challenging, as we need to simultaneously solve correspondences and relative pose between line reconstructions.
no code implementations • 2 Dec 2020 • Yiran Zhong, Yuchao Dai, Hongdong Li
The given sparse depth points are served as a data term to constrain the weighting process.
no code implementations • 1 Dec 2020 • Yiran Zhong, Charles Loop, Wonmin Byeon, Stan Birchfield, Yuchao Dai, Kaihao Zhang, Alexey Kamenev, Thomas Breuel, Hongdong Li, Jan Kautz
A common way to speed up the computation is to downsample the feature volume, but this loses high-frequency details.
1 code implementation • CVPR 2021 • Liyuan Pan, Shah Chowdhury, Richard Hartley, Miaomiao Liu, Hongguang Zhang, Hongdong Li
The heavy defocus blur in DP pairs affects the performance of matching-based depth estimation approaches.
2 code implementations • NeurIPS 2020 • Jianyuan Wang, Yiran Zhong, Yuchao Dai, Kaihao Zhang, Pan Ji, Hongdong Li
Learning matching costs has been shown to be critical to the success of the state-of-the-art deep stereo matching methods, in which 3D convolutions are applied on a 4D feature volume to learn a 3D cost volume.
1 code implementation • NeurIPS 2020 • Xuelian Cheng, Yiran Zhong, Mehrtash Harandi, Yuchao Dai, Xiaojun Chang, Tom Drummond, Hongdong Li, ZongYuan Ge
To reduce the human efforts in neural network design, Neural Architecture Search (NAS) has been applied with remarkable success to various high-level vision tasks such as classification and semantic segmentation.
Ranked #2 on
Stereo Disparity Estimation
on Scene Flow
1 code implementation • 13 Oct 2020 • Cristian Rodriguez-Opazo, Edison Marrese-Taylor, Basura Fernando, Hongdong Li, Stephen Gould
This paper studies the task of temporal moment localization in a long untrimmed video using natural language query.
2 code implementations • NeurIPS 2020 • Dongxu Li, Chenchen Xu, Xin Yu, Kaihao Zhang, Ben Swift, Hanna Suominen, Hongdong Li
Sign language translation (SLT) aims to interpret sign video sequences into text-based natural language sentences.
1 code implementation • 1 Jul 2020 • Yizhak Ben-Shabat, Xin Yu, Fatemeh Sadat Saleh, Dylan Campbell, Cristian Rodriguez-Opazo, Hongdong Li, Stephen Gould
The availability of a large labeled dataset is a key requirement for applying deep learning methods to solve various computer vision tasks.
no code implementations • 15 Jun 2020 • Suryansh Kumar, Luc van Gool, Carlos E. P. de Oliveira, Anoop Cherian, Yuchao Dai, Hongdong Li
Assuming that a deforming shape is composed of a union of local linear subspace and, span a global low-rank space over multiple frames enables us to efficiently model complex non-rigid deformations.
1 code implementation • 7 Jun 2020 • Zhenbo Song, Jianfeng Lu, Tong Zhang, Hongdong Li
In this paper, we propose a monocular camera-based inter-vehicle distance and relative velocity estimation method based on end-to-end training of a deep neural network.
1 code implementation • CVPR 2020 • Yujiao Shi, Xin Yu, Dylan Campbell, Hongdong Li
Cross-view geo-localization is the problem of estimating the position and orientation (latitude, longitude and azimuth angle) of a camera at ground level given a large-scale database of geo-tagged aerial (e. g., satellite) images.
1 code implementation • CVPR 2020 • Kaihao Zhang, Wenhan Luo, Yiran Zhong, Lin Ma, Bjorn Stenger, Wei Liu, Hongdong Li
To address this problem, we propose a new method which combines two GAN models, i. e., a learning-to-Blur GAN (BGAN) and learning-to-DeBlur GAN (DBGAN), in order to learn a better model for image deblurring by primarily learning how to blur images.
Ranked #14 on
Deblurring
on HIDE (trained on GOPRO)
1 code implementation • 15 Mar 2020 • Liu Liu, Dylan Campbell, Hongdong Li, Dingfu Zhou, Xibin Song, Ruigang Yang
Conventional absolute camera pose via a Perspective-n-Point (PnP) solver often assumes that the correspondences between 2D image pixels and 3D points are given.
no code implementations • CVPR 2020 • Dongxu Li, Xin Yu, Chenchen Xu, Lars Petersson, Hongdong Li
To this end, we extract news signs using a base WSLR model, and then design a classifier jointly trained on news and isolated signs to coarsely align these two domain features.
no code implementations • 10 Feb 2020 • Xin Yu, Zheyu Zhuang, Piotr Koniusz, Hongdong Li
In this paper, we aim to reduce such errors by incorporating the distances between pixels and keypoints into our objective.
1 code implementation • ECCV 2020 • Hongguang Zhang, Li Zhang, Xiaojuan Qi, Hongdong Li, Philip H. S. Torr, Piotr Koniusz
Such encoded blocks are aggregated by permutation-invariant pooling to make our approach robust to varying action lengths and long-range temporal dependencies whose patterns are unlikely to repeat even in clips of the same class.
Ranked #6 on
Few Shot Action Recognition
on Kinetics-100
1 code implementation • CVPR 2021 • Hongguang Zhang, Piotr Koniusz, Songlei Jian, Hongdong Li, Philip H. S. Torr
The majority of existing few-shot learning methods describe image relations with binary labels.
Unsupervised Few-Shot Image Classification
Unsupervised Few-Shot Learning
1 code implementation • NeurIPS 2019 • Yujiao Shi, Liu Liu, Xin Yu, Hongdong Li
The first step is to apply a regular polar transform to warp an aerial image such that its domain is closer to that of a ground-view panorama.
no code implementations • 19 Nov 2019 • Suryansh Kumar, Yuchao Dai, Hongdong Li
We assume that a dynamic scene can be approximated by numerous piecewise planar surfaces, where each planar surface enjoys its own rigid motion, and the global change in the scene between two frames is as-rigid-as-possible (ARAP).
2 code implementations • 24 Oct 2019 • Dongxu Li, Cristian Rodriguez Opazo, Xin Yu, Hongdong Li
Based on this new large-scale dataset, we are able to experiment with several deep learning methods for word-level sign recognition and evaluate their performances in large scale scenarios.
Ranked #3 on
Sign Language Recognition
on WLASL100
1 code implementation • 20 Aug 2019 • Cristian Rodriguez-Opazo, Edison Marrese-Taylor, Fatemeh Sadat Saleh, Hongdong Li, Stephen Gould
Given an untrimmed video and a sentence as the query, the goal is to determine the starting, and the ending, of the relevant visual moment in the video, that corresponds to the query sentence.
5 code implementations • ICCV 2019 • Wei Mao, Miaomiao Liu, Mathieu Salzmann, Hongdong Li
In this paper, we propose a simple feed-forward deep network for motion prediction, which takes into account both temporal smoothness and spatial dependencies among human body joints.
1 code implementation • 11 Jul 2019 • Yujiao Shi, Xin Yu, Liu Liu, Tong Zhang, Hongdong Li
This paper proposes a novel Cross-View Feature Transport (CVFT) technique to explicitly establish cross-view domain transfer that facilitates feature alignment between ground and aerial images.
no code implementations • 24 Apr 2019 • Tong Zhang, Pan Ji, Mehrtash Harandi, Wenbing Huang, Hongdong Li
We introduce the Neural Collaborative Subspace Clustering, a neural model that discovers clusters of data points drawn from a union of low-dimensional subspaces.
no code implementations • CVPR 2019 • Yiran Zhong, Pan Ji, Jianyuan Wang, Yuchao Dai, Hongdong Li
In this paper, we propose Deep Epipolar Flow, an unsupervised optical flow method which incorporates global geometric constraints into network learning.
3 code implementations • CVPR 2019 • Xuelian Cheng, Yiran Zhong, Yuchao Dao, Pan Ji, Hongdong Li
In this paper, we present LidarStereoNet, the first unsupervised Lidar-stereo fusion network, which can be trained in an end-to-end manner without the need of ground truth depth maps.
1 code implementation • CVPR 2019 • Hongguang Zhang, Yuchao Dai, Hongdong Li, Piotr Koniusz
depth, we propose a stacked version of our multi-patch model.
Ranked #6 on
Deblurring
on RealBlur-R (trained on GoPro)
(SSIM (sRGB) metric)
1 code implementation • CVPR 2019 • Liu Liu, Hongdong Li
The goal is to predict the spatial location of a ground-level query image by matching it to a large geotagged aerial image database (e. g., satellite imagery).
no code implementations • 3 Mar 2019 • Dingfu Zhou, Yuchao Dai, Hongdong Li
Recovering the absolute metric scale from a monocular camera is a challenging but highly desirable problem for monocular camera-based systems.
no code implementations • 15 Feb 2019 • Hao Zhu, Mantang Guo, Hongdong Li, Qing Wang, Antonio Robles-Kelly
We prove that the light field is a 2D series, thus, a specifically designed CNN-LSTM network is proposed to capture the continuity property of the EPI.
no code implementations • 11 Feb 2019 • Suryansh Kumar, Ram Srivatsav Ghorakavi, Yuchao Dai, Hongdong Li
Given per-pixel optical flow correspondences between two consecutive frames and, the sparse depth prior for the reference frame, we show that, we can effectively recover the dense depth map for the successive frames without solving for 3D motion parameters.
no code implementations • CVPR 2019 • Dylan Campbell, Lars Petersson, Laurent Kneip, Hongdong Li, Stephen Gould
Determining the position and orientation of a calibrated camera from a single image with respect to a 3D model is an essential task for many applications.
no code implementations • CVPR 2019 • Xibin Song, Peng Wang, Dingfu Zhou, Rui Zhu, Chenye Guan, Yuchao Dai, Hao Su, Hongdong Li, Ruigang Yang
Specifically, we first segment each car with a pre-trained Mask R-CNN, and then regress towards its 3D pose and shape based on a deformable 3D car model with or without using semantic keypoints.
5 code implementations • ICCV 2019 • Liu Liu, Hongdong Li, Yuchao Dai
This paper tackles the problem of large-scale image-based localization (IBL) where the spatial location of a query image is determined by finding out the most similar reference images in a large database.
no code implementations • ECCV 2018 • Yiran Zhong, Yuchao Dai, Hongdong Li
This paper proposes an original problem of \emph{stereo computation from a single mixture image}-- a challenging problem that had not been researched before.
no code implementations • 13 Aug 2018 • Yiran Zhong, Yuchao Dai, Hongdong Li
This paper is concerned with the problem of how to better exploit 3D geometric information for dense semantic image labeling.
no code implementations • ECCV 2018 • Yiran Zhong, Hongdong Li, Yuchao Dai
Deep Learning based stereo matching methods have shown great successes and achieved top scores across different benchmarks.
no code implementations • 1 Aug 2018 • Cristian Rodriguez, Basura Fernando, Hongdong Li
Human action-anticipation methods predict what is the future action by observing only a few portion of an action in progress.
2 code implementations • ECCV 2018 • Yi Zhou, Guillermo Gallego, Henri Rebecq, Laurent Kneip, Hongdong Li, Davide Scaramuzza
Event cameras are bio-inspired sensors that offer several advantages, such as low latency, high-speed and high dynamic range, to tackle challenging scenarios in computer vision.
no code implementations • CVPR 2018 • Xiu Li, Hongdong Li, Hanbyul Joo, Yebin Liu, Yaser Sheikh
This paper proposes a new method for Non-Rigid Structure-from-Motion (NRSfM) from a long monocular video sequence observing a non-rigid object performing recurrent and possibly repetitive dynamic action.
no code implementations • 16 Apr 2018 • Ziang Cheng, ShaoDi You, Viorela Ila, Hongdong Li
In experiments, we validate our ap- proach upon synthetic and real hazy images, where our method showed superior performance over state-of-the-art approaches, suggesting semantic information facilitates the haze removal task.
1 code implementation • 28 Mar 2018 • Kaihao Zhang, Wenhan Luo, Yiran Zhong, Lin Ma, Wei Liu, Hongdong Li
To tackle the second challenge, we leverage the developed DBLRNet as a generator in the GAN (generative adversarial network) architecture, and employ a content loss in addition to an adversarial loss for efficient adversarial training.
no code implementations • CVPR 2018 • Suryansh Kumar, Anoop Cherian, Yuchao Dai, Hongdong Li
To address these issues, in this paper, we propose a new approach for dense NRSfM by modeling the problem on a Grassmann manifold.
no code implementations • ICCV 2017 • Liu Liu, Hongdong Li, Yuchao Dai
In this paper, we introduce a global method which harnesses global contextual information exhibited both within the query image and among all the 3D points in the map.
no code implementations • ICCV 2017 • Dylan Campbell, Lars Petersson, Laurent Kneip, Hongdong Li
Estimating the 6-DoF pose of a camera from a single image relative to a pre-computed 3D point-set is an important task for many computer vision applications.
2 code implementations • NeurIPS 2017 • Pan Ji, Tong Zhang, Hongdong Li, Mathieu Salzmann, Ian Reid
We present a novel deep neural network architecture for unsupervised subspace clustering.
Ranked #3 on
Image Clustering
on Extended Yale-B
no code implementations • 4 Sep 2017 • Yiran Zhong, Yuchao Dai, Hongdong Li
Exiting deep-learning based dense stereo matching methods often rely on ground-truth disparity maps as the training signals, which are however not always available in many situations.
no code implementations • ICCV 2017 • Suryansh Kumar, Yuchao Dai, Hongdong Li
This paper proposes a new approach for monocular dense 3D reconstruction of a complex dynamic scene from two perspective frames.
1 code implementation • 17 Jul 2017 • Pan Ji, Ian Reid, Ravi Garg, Hongdong Li, Mathieu Salzmann
In this paper, we present a kernel subspace clustering method that can handle non-linear models.
no code implementations • ICCV 2017 • Pan Ji, Hongdong Li, Yuchao Dai, Ian Reid
Rigid structure-from-motion (RSfM) and non-rigid structure-from-motion (NRSfM) have long been treated in the literature as separate (different) problems.
no code implementations • 12 Jul 2017 • Dingfu Zhou, Yuchao Dai, Hongdong Li
First, we prove that there indeed exist enough degrees of freedom to apply pixel-wise local homography for stereo rectification.
no code implementations • 14 May 2017 • Suryansh Kumar, Yuchao Dai, Hongdong Li
This spatio-temporal representation not only provides competitive 3D reconstruction but also outputs robust segmentation of multiple non-rigid objects.
no code implementations • 6 Feb 2017 • Yi Zhou, Laurent Kneip, Hongdong Li
This paper presents a robust and efficient semi-dense visual odometry solution for RGB-D cameras.
no code implementations • 15 Jul 2016 • Suryansh Kumar, Yuchao Dai, Hongdong Li
Recent progress have extended SFM to the areas of {multi-body SFM} (where there are {multiple rigid} relative motions in the scene), as well as {non-rigid SFM} (where there is a single non-rigid, deformable object or scene).
no code implementations • 12 May 2016 • Liu Liu, Hongdong Li, Yuchao Dai
When the solver is used in combination with RANSAC, we are able to quickly prune unpromising hypotheses, significantly improve the chance of finding inliers.
no code implementations • 11 May 2016 • Jiaolong Yang, Hongdong Li, Dylan Campbell, Yunde Jia
The evaluation demonstrates that the proposed method is able to produce reliable registration results regardless of the initialization.
no code implementations • CVPR 2016 • Jiaolong Yang, Hongdong Li, Yuchao Dai, Robby T. Tan
This paper deals with a challenging, frequently encountered, yet not properly investigated problem in two-frame optical flow estimation.
no code implementations • CVPR 2016 • Gao Zhu, Fatih Porikli, Hongdong Li
Our method generates a small number of "high-quality" proposals by a novel instance-specific objectness measure and evaluates them against the object model that can be adopted from an existing tracking-by-detection approach as a core tracker.
no code implementations • CVPR 2016 • Yuchao Dai, Hongdong Li, Laurent Kneip
The vast majority of modern consumer-grade cameras employ a rolling shutter mechanism.
no code implementations • 19 Mar 2016 • Gucan Long, Laurent Kneip, Jose M. Alvarez, Hongdong Li
This work presents an unsupervised learning based approach to the ubiquitous computer vision problem of image matching.
no code implementations • CVPR 2017 • Jiaolong Yang, Peiran Ren, Dong-Qing Zhang, Dong Chen, Fang Wen, Hongdong Li, Gang Hua
The network takes a face video or face image set of a person with a variable number of face images as its input, and produces a compact, fixed-dimension feature representation for recognition.
Ranked #7 on
Face Verification
on IJB-A
no code implementations • CVPR 2016 • Pan Ji, Hongdong Li, Mathieu Salzmann, Yiran Zhong
Feature tracking is a fundamental problem in computer vision, with applications in many computer vision tasks, such as visual SLAM and action recognition.
1 code implementation • ICCV 2015 • Pan Ji, Mathieu Salzmann, Hongdong Li
The Shape Interaction Matrix (SIM) is one of the earliest approaches to performing subspace clustering (i. e., separating points drawn from a union of subspaces).
Ranked #2 on
Motion Segmentation
on Hopkins155
no code implementations • 29 Jul 2015 • Gao Zhu, Fatih Porikli, Hongdong Li
Our method generates a small number of "high-quality" proposals by a novel instance-specific objectness measure and evaluates them against the object model that can be adopted from an existing tracking-by-detection approach as a core tracker.
no code implementations • CVPR 2015 • Jiaolong Yang, Hongdong Li
This paper proposes a simple method for estimating dense and accurate optical flow field.
no code implementations • CVPR 2014 • Sadeep Jayasumana, Richard Hartley, Mathieu Salzmann, Hongdong Li, Mehrtash Harandi
We tackle the problem of optimizing over all possible positive definite radial kernels on Riemannian manifolds for classification.
no code implementations • 13 Dec 2014 • Sadeep Jayasumana, Mathieu Salzmann, Hongdong Li, Mehrtash Harandi
We propose a framework for 2D shape analysis using positive definite kernels defined on Kendall's shape manifold.
no code implementations • CVPR 2013 • Sadeep Jayasumana, Richard Hartley, Mathieu Salzmann, Hongdong Li, Mehrtash Harandi
To encode the geometry of the manifold in the mapping, we introduce a family of provably positive definite kernels on the Riemannian manifold of SPD matrices.
no code implementations • 30 Nov 2014 • Sadeep Jayasumana, Richard Hartley, Mathieu Salzmann, Hongdong Li, Mehrtash Harandi
We then use the proposed framework to identify positive definite kernels on two specific manifolds commonly encountered in computer vision: the Riemannian manifold of symmetric positive definite matrices and the Grassmann manifold, i. e., the Riemannian manifold of linear subspaces of a Euclidean space.
no code implementations • CVPR 2015 • Thalaiyasingam Ajanthan, Richard Hartley, Mathieu Salzmann, Hongdong Li
While widely acknowledged as highly effective in computer vision, multi-label MRFs with non-convex priors are difficult to optimize.
no code implementations • 4 Jul 2014 • Mehrtash T. Harandi, Mathieu Salzmann, Sadeep Jayasumana, Richard Hartley, Hongdong Li
Modeling videos and image-sets as linear subspaces has proven beneficial for many visual recognition tasks.
no code implementations • CVPR 2014 • Laurent Kneip, Hongdong Li
We present a novel solution to compute the relative pose of a generalized camera.
no code implementations • CVPR 2013 • Yansheng Ming, Hongdong Li, Xuming He
The main focus is given to how to maintain the consistency (compatibility) between the region cues and the boundary cues.