Search Results for author: Jimmy Ren

Found 29 papers, 14 papers with code

Learning to See in the Dark with Events

no code implementations ECCV 2020 Song Zhang, Yu Zhang, Zhe Jiang, Dongqing Zou, Jimmy Ren, Bin Zhou

A detail enhancing branch is proposed to reconstruct day light-specific features from the domain-invariant representations in a residual manner, regularized by a ranking loss.

Representation Learning Unsupervised Domain Adaptation

Learning Event-Driven Video Deblurring and Interpolation

no code implementations ECCV 2020 Songnan Lin, Jiawei Zhang, Jinshan Pan, Zhe Jiang, Dongqing Zou, Yongtian Wang, Jing Chen, Jimmy Ren

Event-based sensors, which have a response if the change of pixel intensity exceeds a triggering threshold, can capture high-speed motion with microsecond accuracy.

Deblurring Frame

Low-Dose CT Denoising Using a Structure-Preserving Kernel Prediction Network

no code implementations31 May 2021 Lu Xu, Yuwei Zhang, Ying Liu, Daoye Wang, Mu Zhou, Jimmy Ren, Jingwei Wei, Zhaoxiang Ye

Low-dose CT has been a key diagnostic imaging modality to reduce the potential risk of radiation overdose to patient health.


Efficient Deep Image Denoising via Class Specific Convolution

no code implementations2 Mar 2021 Lu Xu, Jiawei Zhang, Xuanye Cheng, Feng Zhang, Xing Wei, Jimmy Ren

In this paper, we propose an efficient deep neural network for image denoising based on pixel-wise classification.

Image Denoising

Image Quality Assessment for Perceptual Image Restoration: A New Dataset, Benchmark and Metric

no code implementations30 Nov 2020 Jinjin Gu, Haoming Cai, Haoyu Chen, Xiaoxing Ye, Jimmy Ren, Chao Dong

To answer the questions and promote the development of IQA methods, we contribute a large-scale IQA dataset, called Perceptual Image Processing ALgorithms (PIPAL) dataset.

Image Quality Assessment Image Restoration

PIPAL: a Large-Scale Image Quality Assessment Dataset for Perceptual Image Restoration

no code implementations ECCV 2020 Jinjin Gu, Haoming Cai, Haoyu Chen, Xiaoxing Ye, Jimmy Ren, Chao Dong

To answer these questions and promote the development of IQA methods, we contribute a large-scale IQA dataset, called Perceptual Image Processing Algorithms (PIPAL) dataset.

Image Quality Assessment Image Restoration +1

Learning a Reinforced Agent for Flexible Exposure Bracketing Selection

1 code implementation CVPR 2020 Zhouxia Wang, Jiawei Zhang, Mude Lin, Jiong Wang, Ping Luo, Jimmy Ren

Automatically selecting exposure bracketing (images exposed differently) is important to obtain a high dynamic range image by using multi-exposure fusion.

Learning Event-Based Motion Deblurring

no code implementations CVPR 2020 Zhe Jiang, Yu Zhang, Dongqing Zou, Jimmy Ren, Jiancheng Lv, Yebin Liu

Recovering sharp video sequence from a motion-blurred image is highly ill-posed due to the significant loss of motion information in the blurring process.

Ranked #15 on Image Deblurring on GoPro (using extra training data)

Deblurring Image Deblurring

Image Formation Model Guided Deep Image Super-Resolution

1 code implementation18 Aug 2019 Jinshan Pan, Yang Liu, Deqing Sun, Jimmy Ren, Ming-Ming Cheng, Jian Yang, Jinhui Tang

We present a simple and effective image super-resolution algorithm that imposes an image formation constraint on the deep neural networks via pixel substitution.

Image Super-Resolution

Spatio-Temporal Filter Adaptive Network for Video Deblurring

1 code implementation ICCV 2019 Shangchen Zhou, Jiawei Zhang, Jinshan Pan, Haozhe Xie, WangMeng Zuo, Jimmy Ren

To overcome the limitation of separate optical flow estimation, we propose a Spatio-Temporal Filter Adaptive Network (STFAN) for the alignment and deblurring in a unified framework.

Ranked #4 on Deblurring on DVD (using extra training data)

Deblurring Frame +2

DAVANet: Stereo Deblurring with View Aggregation

1 code implementation CVPR 2019 Shangchen Zhou, Jiawei Zhang, WangMeng Zuo, Haozhe Xie, Jinshan Pan, Jimmy Ren

Nowadays stereo cameras are more commonly adopted in emerging devices such as dual-lens smartphones and unmanned aerial vehicles.

Deblurring Image Deblurring

Very Power Efficient Neural Time-of-Flight

no code implementations19 Dec 2018 Yan Chen, Jimmy Ren, Xuanye Cheng, Keyuan Qian, Jinwei Gu

Therefore, the design of a power efficient ToF camera always creates a painful dilemma for the illumination and the performance trade-off.

DSR: Direct Self-rectification for Uncalibrated Dual-lens Cameras

1 code implementation26 Sep 2018 Ruichao Xiao, Wenxiu Sun, Jiahao Pang, Qiong Yan, Jimmy Ren

Our method is evaluated on both real-istic and synthetic stereo image pairs, and produces supe-rior results compared to the calibrated rectification or otherself-rectification approaches

Stereo Matching Stereo Matching Hand

Learning Monocular Depth by Distilling Cross-domain Stereo Networks

1 code implementation ECCV 2018 Xiaoyang Guo, Hongsheng Li, Shuai Yi, Jimmy Ren, Xiaogang Wang

Monocular depth estimation aims at estimating a pixelwise depth map for a single image, which has wide applications in scene understanding and autonomous driving.

Autonomous Driving Monocular Depth Estimation +3

Physics-Based Generative Adversarial Models for Image Restoration and Beyond

no code implementations2 Aug 2018 Jinshan Pan, Jiangxin Dong, Yang Liu, Jiawei Zhang, Jimmy Ren, Jinhui Tang, Yu-Wing Tai, Ming-Hsuan Yang

We present an algorithm to directly solve numerous image restoration problems (e. g., image deblurring, image dehazing, image deraining, etc.).

Deblurring Image Deblurring +3

Deep Reasoning with Knowledge Graph for Social Relationship Understanding

1 code implementation2 Jul 2018 Zhouxia Wang, Tianshui Chen, Jimmy Ren, Weihao Yu, Hui Cheng, Liang Lin

And this structured knowledge can be efficiently integrated into the deep neural network architecture to promote social relationship understanding by an end-to-end trainable Graph Reasoning Model (GRM), in which a propagation mechanism is learned to propagate node message through the graph to explore the interaction between persons of interest and the contextual objects.

Dynamic Scene Deblurring Using Spatially Variant Recurrent Neural Networks

1 code implementation CVPR 2018 Jiawei Zhang, Jinshan Pan, Jimmy Ren, Yibing Song, Linchao Bao, Rynson W. H. Lau, Ming-Hsuan Yang

The proposed network is composed of three deep convolutional neural networks (CNNs) and a recurrent neural network (RNN).

Ranked #6 on Deblurring on RealBlur-R (trained on GoPro) (SSIM (sRGB) metric)


Learning Selfie-Friendly Abstraction from Artistic Style Images

1 code implementation5 May 2018 Yicun Liu, Jimmy Ren, Jianbo Liu, Jiawei Zhang, Xiaohao Chen

Artistic style transfer can be thought as a process to generate different versions of abstraction of the original image.

Frame Style Transfer

3D Human Pose Estimation in the Wild by Adversarial Learning

no code implementations CVPR 2018 Wei Yang, Wanli Ouyang, Xiaolong Wang, Jimmy Ren, Hongsheng Li, Xiaogang Wang

Instead of defining hard-coded rules to constrain the pose estimation results, we design a novel multi-source discriminator to distinguish the predicted 3D poses from the ground-truth, which helps to enforce the pose estimator to generate anthropometrically valid poses even with images in the wild.

Monocular 3D Human Pose Estimation

Zoom and Learn: Generalizing Deep Stereo Matching to Novel Domains

1 code implementation CVPR 2018 Jiahao Pang, Wenxiu Sun, Chengxi Yang, Jimmy Ren, Ruichao Xiao, Jin Zeng, Liang Lin

By feeding real stereo pairs of different domains to stereo models pre-trained with synthetic data, we see that: i) a pre-trained model does not generalize well to the new domain, producing artifacts at boundaries and ill-posed regions; however, ii) feeding an up-sampled stereo pair leads to a disparity map with extra details.

Stereo Matching Stereo Matching Hand

Single View Stereo Matching

1 code implementation CVPR 2018 Yue Luo, Jimmy Ren, Mude Lin, Jiahao Pang, Wenxiu Sun, Hongsheng Li, Liang Lin

The resulting model outperforms all the previous monocular depth estimation methods as well as the stereo block matching method in the challenging KITTI dataset by only using a small number of real training data.

Ranked #16 on Monocular Depth Estimation on KITTI Eigen split (using extra training data)

Monocular Depth Estimation Stereo Matching +1

LSTM Pose Machines

1 code implementation CVPR 2018 Yue Luo, Jimmy Ren, Zhouxia Wang, Wenxiu Sun, Jinshan Pan, Jianbo Liu, Jiahao Pang, Liang Lin

Such suboptimal results are mainly attributed to the inability of imposing sequential geometric consistency, handling severe image quality degradation (e. g. motion blur and occlusion) as well as the inability of capturing the temporal correlation among video frames.

Pose Estimation

Image Dehazing using Bilinear Composition Loss Function

no code implementations1 Oct 2017 Hui Yang, Jinshan Pan, Qiong Yan, Wenxiu Sun, Jimmy Ren, Yu-Wing Tai

In this paper, we introduce a bilinear composition loss function to address the problem of image dehazing.

Image Dehazing

Robust Tracking Using Region Proposal Networks

no code implementations30 May 2017 Jimmy Ren, ZHIYANG YU, Jianbo Liu, Rui Zhang, Wenxiu Sun, Jiahao Pang, Xiaohao Chen, Qiong Yan

Recent advances in visual tracking showed that deep Convolutional Neural Networks (CNN) trained for image classification can be strong feature extractors for discriminative trackers.

Classification Feature Engineering +4

Look, Listen and Learn - A Multimodal LSTM for Speaker Identification

no code implementations13 Feb 2016 Jimmy Ren, Yongtao Hu, Yu-Wing Tai, Chuan Wang, Li Xu, Wenxiu Sun, Qiong Yan

This task not only requires collective perception over both visual and auditory signals, the robustness to handle severe quality degradations and unconstrained content variations are also indispensable.

Speaker Identification

Deep Multimodal Speaker Naming

no code implementations17 Jul 2015 Yongtao Hu, Jimmy Ren, Jingwen Dai, Chang Yuan, Li Xu, Wenping Wang

Automatic speaker naming is the problem of localizing as well as identifying each speaking character in a TV/movie/live show video.

Face Alignment

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