Search Results for author: Haoqian Wang

Found 22 papers, 10 papers with code

MST++: Multi-stage Spectral-wise Transformer for Efficient Spectral Reconstruction

1 code implementation17 Apr 2022 Yuanhao Cai, Jing Lin, Zudi Lin, Haoqian Wang, Yulun Zhang, Hanspeter Pfister, Radu Timofte, Luc van Gool

Existing leading methods for spectral reconstruction (SR) focus on designing deeper or wider convolutional neural networks (CNNs) to learn the end-to-end mapping from the RGB image to its hyperspectral image (HSI).

Coarse-to-Fine Sparse Transformer for Hyperspectral Image Reconstruction

no code implementations9 Mar 2022 Jing Lin, Yuanhao Cai, Xiaowan Hu, Haoqian Wang, Xin Yuan, Yulun Zhang, Radu Timofte, Luc van Gool

Many algorithms have been developed to solve the inverse problem of coded aperture snapshot spectral imaging (CASSI), i. e., recovering the 3D hyperspectral images (HSIs) from a 2D compressive measurement.

Image Reconstruction

HDNet: High-resolution Dual-domain Learning for Spectral Compressive Imaging

2 code implementations4 Mar 2022 Xiaowan Hu, Yuanhao Cai, Jing Lin, Haoqian Wang, Xin Yuan, Yulun Zhang, Radu Timofte, Luc van Gool

On the one hand, the proposed HR spatial-spectral attention module with its efficient feature fusion provides continuous and fine pixel-level features.

Flow-Guided Sparse Transformer for Video Deblurring

no code implementations6 Jan 2022 Jing Lin, Yuanhao Cai, Xiaowan Hu, Haoqian Wang, Youliang Yan, Xueyi Zou, Henghui Ding, Yulun Zhang, Radu Timofte, Luc van Gool

Exploiting similar and sharper scene patches in spatio-temporal neighborhoods is critical for video deblurring.

Deblurring Frame +1

Real-time Human-Centric Segmentation for Complex Video Scenes

1 code implementation16 Aug 2021 Ran Yu, Chenyu Tian, Weihao Xia, Xinyuan Zhao, Haoqian Wang, Yujiu Yang

To alleviate this problem, we propose a mechanism named Inner Center Sampling to improve the accuracy of instance segmentation.

Instance Segmentation Semantic Segmentation +1

PoseDet: Fast Multi-Person Pose Estimation Using Pose Embedding

1 code implementation22 Jul 2021 Chenyu Tian, Ran Yu, Xinyuan Zhao, Weihao Xia, Haoqian Wang, Yujiu Yang

This simple framework achieves an unprecedented speed and a competitive accuracy on the COCO benchmark compared with state-of-the-art methods.

Multi-Person Pose Estimation

Pseudo 3D Auto-Correlation Network for Real Image Denoising

no code implementations CVPR 2021 Xiaowan Hu, Ruijun Ma, Zhihong Liu, Yuanhao Cai, Xiaole Zhao, Yulun Zhang, Haoqian Wang

The extraction of auto-correlation in images has shown great potential in deep learning networks, such as the self-attention mechanism in the channel domain and the self-similarity mechanism in the spatial domain.

Image Denoising

Learning Delicate Local Representations for Multi-Person Pose Estimation

3 code implementations ECCV 2020 Yuanhao Cai, Zhicheng Wang, Zhengxiong Luo, Binyi Yin, Angang Du, Haoqian Wang, Xiangyu Zhang, Xinyu Zhou, Erjin Zhou, Jian Sun

To tackle this problem, we propose an efficient attention mechanism - Pose Refine Machine (PRM) to make a trade-off between local and global representations in output features and further refine the keypoint locations.

Keypoint Detection Multi-Person Pose Estimation

Non-negative Sparse and Collaborative Representation for Pattern Classification

no code implementations20 Aug 2019 Jun Xu, Zhou Xu, Wangpeng An, Haoqian Wang, David Zhang

In this paper, we propose a novel Non-negative Sparse and Collaborative Representation (NSCR) for pattern classification.

Classification Face Recognition +1

Semi-Supervised Self-Growing Generative Adversarial Networks for Image Recognition

no code implementations11 Aug 2019 Haoqian Wang, Zhiwei Xu, Jun Xu, Wangpeng An, Lei Zhang, Qionghai Dai

There are two main problems in label inference: how to measure the confidence of the unlabeled data and how to generalize the classifier.

STAR: A Structure and Texture Aware Retinex Model

1 code implementation16 Jun 2019 Jun Xu, Yingkun Hou, Dongwei Ren, Li Liu, Fan Zhu, Mengyang Yu, Haoqian Wang, Ling Shao

A novel Structure and Texture Aware Retinex (STAR) model is further proposed for illumination and reflectance decomposition of a single image.

Low-Light Image Enhancement

SPI-Optimizer: an integral-Separated PI Controller for Stochastic Optimization

2 code implementations29 Dec 2018 Dan Wang, Mengqi Ji, Yong Wang, Haoqian Wang, Lu Fang

Inspired by the conditional integration idea in classical control society, we propose SPI-Optimizer, an integral-Separated PI controller based optimizer WITHOUT introducing extra hyperparameter.

Stochastic Optimization

CrossNet: An End-to-end Reference-based Super Resolution Network using Cross-scale Warping

no code implementations ECCV 2018 Haitian Zheng, Mengqi Ji, Haoqian Wang, Yebin Liu, Lu Fang

The Reference-based Super-resolution (RefSR) super-resolves a low-resolution (LR) image given an external high-resolution (HR) reference image, where the reference image and LR image share similar viewpoint but with significant resolution gap x8.

Patch Matching Reference-based Super-Resolution

A PID Controller Approach for Stochastic Optimization of Deep Networks

3 code implementations CVPR 2018 Wangpeng An, Haoqian Wang, Qingyun Sun, Jun Xu, Qionghai Dai, Lei Zhang

We first reveal the intrinsic connections between SGD-Momentum and PID based controller, then present the optimization algorithm which exploits the past, current, and change of gradients to update the network parameters.

Stochastic Optimization

Fast and High Quality Highlight Removal from A Single Image

no code implementations1 Dec 2015 Dongsheng An, Jinli Suo, Xiangyang Ji, Haoqian Wang, Qionghai Dai

Specifically, this paper derives a normalized dichromatic model for the pixels with identical diffuse color: a unit circle equation of projection coefficients in two subspaces that are orthogonal to and parallel with the illumination, respectively.

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