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Unsupervised person re-identification (Re-ID) aims to learn a feature network with cross-camera retrieval capability in unlabelled datasets. Although the pseudo-label based methods have achieved great progress in Re-ID, their performance in…

Computer Vision and Pattern Recognition · Computer Science 2024-08-20 Mingxiao Zheng , Yanpeng Qu , Changjing Shang , Longzhi Yang , Qiang Shen

This paper presents a method for riggable 3D face reconstruction from monocular images, which jointly estimates a personalized face rig and per-image parameters including expressions, poses, and illuminations. To achieve this goal, we…

Computer Vision and Pattern Recognition · Computer Science 2021-04-09 Ziqian Bai , Zhaopeng Cui , Xiaoming Liu , Ping Tan

Recent 3D face reconstruction methods have made remarkable advancements, yet there remain huge challenges in monocular high-quality facial reflectance reconstruction. Existing methods rely on a large amount of light-stage captured data to…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Xingyu Ren , Jiankang Deng , Yuhao Cheng , Jia Guo , Chao Ma , Yichao Yan , Wenhan Zhu , Xiaokang Yang

Occlusions remain one of the key challenges in 3D body pose estimation from single-camera video sequences. Temporal consistency has been extensively used to mitigate their impact but the existing algorithms in the literature do not…

Computer Vision and Pattern Recognition · Computer Science 2024-02-20 Soumava Kumar Roy , Ilia Badanin , Sina Honari , Pascal Fua

Reconstructing 3D objects from a single image remains challenging, especially under real-world occlusions. While recent diffusion-based view synthesis models can generate consistent novel views from a single RGB image, they typically assume…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Yansong Qu , Shaohui Dai , Xinyang Li , Yuze Wang , You Shen , Liujuan Cao , Rongrong Ji

Masked graph autoencoder (MGAE) has emerged as a promising self-supervised graph pre-training (SGP) paradigm due to its simplicity and effectiveness. However, existing efforts perform the mask-then-reconstruct operation in the raw data…

Machine Learning · Computer Science 2023-04-07 Wenxuan Tu , Qing Liao , Sihang Zhou , Xin Peng , Chuan Ma , Zhe Liu , Xinwang Liu , Zhiping Cai

Most existing methods for Magnetic Resonance Imaging (MRI) reconstruction with deep learning use fully supervised training, which assumes that a high signal-to-noise ratio (SNR), fully sampled dataset is available for training. In many…

Image and Video Processing · Electrical Eng. & Systems 2024-06-17 Charles Millard , Mark Chiew

Reconstructing clothed humans from a single image is a fundamental task in computer vision with wide-ranging applications. Although existing monocular clothed human reconstruction solutions have shown promising results, they often rely on…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Arindam Dutta , Meng Zheng , Zhongpai Gao , Benjamin Planche , Anwesha Choudhuri , Terrence Chen , Amit K. Roy-Chowdhury , Ziyan Wu

3D face reconstruction from a single 2D image is a very important topic in computer vision. However, the current reconstruction methods are usually non-sensitive to face identities and over-sensitive to facial poses, which may result in…

Computer Vision and Pattern Recognition · Computer Science 2019-05-17 Yao Luo , Xiaoguang Tu , Mei Xie

Witnessed the development of deep learning, increasing number of studies try to build computer aided diagnosis systems for 3D volumetric medical data. However, as the annotations of 3D medical data are difficult to acquire, the number of…

Computer Vision and Pattern Recognition · Computer Science 2019-10-08 Xinrui Zhuang , Yuexiang Li , Yifan Hu , Kai Ma , Yujiu Yang , Yefeng Zheng

Recently the sparse representation based classification (SRC) has been proposed for robust face recognition (FR). In SRC, the testing image is coded as a sparse linear combination of the training samples, and the representation fidelity is…

Computer Vision and Pattern Recognition · Computer Science 2015-06-04 Meng Yang , Lei Zhang , Jian Yang , David Zhang

Unsupervised learning techniques in computer vision often require learning latent representations, such as low-dimensional linear and non-linear subspaces. Noise and outliers in the data can frustrate these approaches by obscuring the…

Accurately reconstructing dense and semantically annotated 3D meshes from monocular images remains a challenging task due to the lack of geometry guidance and imperfect view-dependent 2D priors. Though we have witnessed recent advancements…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Zhenhua Du , Binbin Xu , Haoyu Zhang , Kai Huo , Shuaifeng Zhi

Conditional diffusion models have the generative controllability by incorporating external conditions. However, their performance significantly degrades with noisy conditions, such as corrupted labels in the image generation or unreliable…

Machine Learning · Computer Science 2025-10-14 Xin Chen , Gillian Dobbie , Xinyu Wang , Feng Liu , Di Wang , Jingfeng Zhang

Blind face restoration is a highly ill-posed problem due to the lack of necessary context. Although existing methods produce high-quality outputs, they often fail to faithfully preserve the individual's identity. In this paper, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2025-01-13 Siyu Liu , Zheng-Peng Duan , Jia OuYang , Jiayi Fu , Hyunhee Park , Zikun Liu , Chun-Le Guo , Chongyi Li

Unsupervised visible-infrared person re-identification (UVI-ReID) aims to retrieve pedestrian images across different modalities without costly annotations, but faces challenges due to the modality gap and lack of supervision. Existing…

Computer Vision and Pattern Recognition · Computer Science 2025-05-07 Yongxiang Li , Yuan Sun , Yang Qin , Dezhong Peng , Xi Peng , Peng Hu

Occlusion in face recognition is a common yet challenging problem. While sparse representation based classification (SRC) has been shown promising performance in laboratory conditions (i.e. noiseless or random pixel corrupted), it performs…

Computer Vision and Pattern Recognition · Computer Science 2015-07-28 Yandong Wen , Weiyang Liu , Meng Yang , Yuli Fu , Youjun Xiang , Rui Hu

Occlusion remains one of the major challenges in person reidentification (ReID) as a result of the diversity of poses and the variation of appearances. Developing novel architectures to improve the robustness of occlusion-aware person Re-ID…

Computer Vision and Pattern Recognition · Computer Science 2024-04-02 Syeda Nyma Ferdous , Xin Li

Single-view 3D shape retrieval is a challenging task that is increasingly important with the growth of available 3D data. Prior work that has studied this task has not focused on evaluating how realistic occlusions impact performance, and…

Computer Vision and Pattern Recognition · Computer Science 2024-01-02 Qirui Wu , Daniel Ritchie , Manolis Savva , Angel X. Chang

6D object pose estimation is a fundamental yet challenging problem in computer vision. Convolutional Neural Networks (CNNs) have recently proven to be capable of predicting reliable 6D pose estimates even under monocular settings.…

Computer Vision and Pattern Recognition · Computer Science 2022-03-22 Gu Wang , Fabian Manhardt , Xingyu Liu , Xiangyang Ji , Federico Tombari