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Sketch-based understanding is a critical component of human cognitive learning and is a primitive communication means between humans. This topic has recently attracted the interest of the computer vision community as sketching represents a…

Computer Vision and Pattern Recognition · Computer Science 2022-04-28 Javier Morales , Nils Murrugarra-Llerena , Jose M. Saavedra

Gait recognition has emerged as a robust biometric modality due to its non-intrusive nature. Conventional gait recognition methods mainly rely on silhouettes or skeletons. While effective in controlled laboratory settings, their limited…

Computer Vision and Pattern Recognition · Computer Science 2026-02-24 Hangrui Xu , Zhengxian Wu , Chuanrui Zhang , Zhuohong Chen , Zhifang Liu , Peng Jiao , Haoqian Wang

Recent advancements in gait recognition have significantly enhanced performance by treating silhouettes as either an unordered set or an ordered sequence. However, both set-based and sequence-based approaches exhibit notable limitations.…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Saihui Hou , Chenye Wang , Wenpeng Lang , Zhengxiang Lan , Yongzhen Huang

Gait recognition, a fundamental biometric technology, leverages unique walking patterns for individual identification, typically using 2D representations such as silhouettes or skeletons. However, these methods often struggle with viewpoint…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Zhao-Yang Wang , Jieneng Chen , Jiang Liu , Yuxiang Guo , Rama Chellappa

The choice of the representations is essential for deep gait recognition methods. The binary silhouettes and skeletal coordinates are two dominant representations in recent literature, achieving remarkable advances in many scenarios.…

Computer Vision and Pattern Recognition · Computer Science 2023-12-19 Chao Fan , Jingzhe Ma , Dongyang Jin , Chuanfu Shen , Shiqi Yu

We introduce SketchGNN, a convolutional graph neural network for semantic segmentation and labeling of freehand vector sketches. We treat an input stroke-based sketch as a graph, with nodes representing the sampled points along input…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Lumin Yang , Jiajie Zhuang , Hongbo Fu , Xiangzhi Wei , Kun Zhou , Youyi Zheng

Robust gait recognition requires highly discriminative representations, which are closely tied to input modalities. While binary silhouettes and skeletons have dominated recent literature, these 2D representations fall short of capturing…

Computer Vision and Pattern Recognition · Computer Science 2025-08-06 Xinzhu Li , Juepeng Zheng , Yikun Chen , Xudong Mao , Guanghui Yue , Wei Zhou , Chenlei Lv , Ruomei Wang , Fan Zhou , Baoquan Zhao

Gait recognition plays a vital role in human identification since gait is a unique biometric feature that can be perceived at a distance. Although existing gait recognition methods can learn gait features from gait sequences in different…

Computer Vision and Pattern Recognition · Computer Science 2021-03-30 Yiqun Liu , Yi Zeng , Jian Pu , Hongming Shan , Peiyang He , Junping Zhang

Gait recognition is a promising biometric method that aims to identify pedestrians from their unique walking patterns. Silhouette modality, renowned for its easy acquisition, simple structure, sparse representation, and convenient modeling,…

Computer Vision and Pattern Recognition · Computer Science 2024-01-25 Zengbin Wang , Saihui Hou , Man Zhang , Xu Liu , Chunshui Cao , Yongzhen Huang , Peipei Li , Shibiao Xu

Free-hand sketches are appealing for humans as a universal tool to depict the visual world. Humans can recognize varied sketches of a category easily by identifying the concurrence and layout of the intrinsic semantic components of the…

Computer Vision and Pattern Recognition · Computer Science 2023-12-14 Guangming Zhu , Siyuan Wang , Tianci Wu , Liang Zhang

Freehand sketches exhibit unique sparsity and abstraction, necessitating learning pipelines distinct from those designed for images. For sketch learning methods, the central objective is to fully exploit the effective information embedded…

Graphics · Computer Science 2026-03-12 Xi Cheng , Pingfa Feng , Mingyu Fan , Zhichao Liao , Hang Cheng , Long Zeng

Gait recognition is emerging as a promising technology and an innovative field within computer vision, with a wide range of applications in remote human identification. However, existing methods typically rely on complex architectures to…

Computer Vision and Pattern Recognition · Computer Science 2026-01-26 Zhengxian Wu , Chuanrui Zhang , Shenao Jiang , Hangrui Xu , Zirui Liao , Luyuan Zhang , Huaqiu Li , Peng Jiao , Haoqian Wang

The gait, as a kind of soft biometric characteristic, can reflect the distinct walking patterns of individuals at a distance, exhibiting a promising technique for unrestrained human identification. With largely excluding gait-unrelated cues…

Computer Vision and Pattern Recognition · Computer Science 2024-12-17 Dongyang Jin , Chao Fan , Weihua Chen , Shiqi Yu

Gait recognition aims to identify individuals based on their body shape and walking patterns. Though much progress has been achieved driven by deep learning, gait recognition in real-world surveillance scenarios remains quite challenging to…

Computer Vision and Pattern Recognition · Computer Science 2025-11-27 Shaoxiong Zhang , Jinkai Zheng , Shangdong Zhu , Chenggang Yan

Gait recognition is a promising biometric technology for identification due to its non-invasiveness and long-distance. However, external variations such as clothing changes and viewpoint differences pose significant challenges to gait…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Yan Sun , Xueling Feng , Liyan Ma , Long Hu , Mark Nixon

Gait recognition offers a non-intrusive biometric solution by identifying individuals through their walking patterns. Although discriminative models have achieved notable success in this domain, the full potential of generative models…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Haijun Xiong , Bin Feng , Bang Wang , Xinggang Wang , Wenyu Liu

Gait recognition is an emerging biometric technology that enables non-intrusive and hard-to-spoof human identification. However, most existing methods are confined to short-range, unimodal settings and fail to generalize to long-range and…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Zhiyang Lu , Wen Jiang , Tianren Wu , Zhichao Wang , Changwang Zhang , Siqi Shen , Ming Cheng

We present SketchGPT, a flexible framework that employs a sequence-to-sequence autoregressive model for sketch generation, and completion, and an interpretation case study for sketch recognition. By mapping complex sketches into simplified…

Computer Vision and Pattern Recognition · Computer Science 2024-05-07 Adarsh Tiwari , Sanket Biswas , Josep Lladós

We introduce SketchYourSeg, a novel framework that establishes freehand sketches as a powerful query modality for subjective image segmentation across entire galleries through a single exemplar sketch. Unlike text prompts that struggle with…

Computer Vision and Pattern Recognition · Computer Science 2025-03-19 Subhadeep Koley , Viswanatha Reddy Gajjala , Aneeshan Sain , Pinaki Nath Chowdhury , Tao Xiang , Ayan Kumar Bhunia , Yi-Zhe Song

Sketch semantic segmentation is a well-explored and pivotal problem in computer vision involving the assignment of pre-defined part labels to individual strokes. This paper presents ContextSeg - a simple yet highly effective approach to…

Computer Vision and Pattern Recognition · Computer Science 2024-03-27 Jiawei Wang , Changjian Li
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