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Object detection and tracking in videos represent essential and computationally demanding building blocks for current and future visual perception systems. In order to reduce the efficiency gap between available methods and computational…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Issa Mouawad , Francesca Odone

This paper addresses the problem of tracking moving objects of variable appearance in challenging scenes rich with features and texture. Reliable tracking is of pivotal importance in surveillance applications. It is made particularly…

Computer Vision and Pattern Recognition · Computer Science 2013-09-26 Rhys Martin , Ognjen Arandjelović

Multi-person pose estimation from a 2D image is challenging because it requires not only keypoint localization but also human detection. In state-of-the-art top-down methods, multi-scale information is a crucial factor for the accurate pose…

Computer Vision and Pattern Recognition · Computer Science 2019-05-13 Gyeongsik Moon , Ju Yong Chang , Kyoung Mu Lee

Despite notable advancements in the field of computer vision, the precise detection of tiny objects continues to pose a significant challenge, largely owing to the minuscule pixel representation allocated to these objects in imagery data.…

Computer Vision and Pattern Recognition · Computer Science 2025-04-22 Hou-I Liu , Yu-Wen Tseng , Kai-Cheng Chang , Pin-Jyun Wang , Hong-Han Shuai , Wen-Huang Cheng

Non-Maximum Suppression (NMS) is essential for object detection and affects the evaluation results by incorporating False Positives (FP) and False Negatives (FN), especially in crowd occlusion scenes. In this paper, we raise the problem of…

Computer Vision and Pattern Recognition · Computer Science 2021-06-07 Zekun Luo , Zheng Fang , Sixiao Zheng , Yabiao Wang , Yanwei Fu

When you see a person in a crowd, occluded by other persons, you miss visual information that can be used to recognize, re-identify or simply classify him or her. You can imagine its appearance given your experience, nothing more.…

Computer Vision and Pattern Recognition · Computer Science 2019-01-25 Federico Fulgeri , Matteo Fabbri , Stefano Alletto , Simone Calderara , Rita Cucchiara

Complicated underwater environments bring new challenges to object detection, such as unbalanced light conditions, low contrast, occlusion, and mimicry of aquatic organisms. Under these circumstances, the objects captured by the underwater…

Computer Vision and Pattern Recognition · Computer Science 2022-10-06 Pinhao Song , Pengteng Li , Linhui Dai , Tao Wang , Zhan Chen

X-ray security screening is in widespread use to maintain transportation security against a wide range of potential threat profiles. Of particular interest is the recent focus on the use of automated screening approaches, including the…

Computer Vision and Pattern Recognition · Computer Science 2019-11-20 Neelanjan Bhowmik , Yona Falinie A. Gaus , Samet Akcay , Jack W. Barker , Toby P. Breckon

We investigate a new problem of detecting hands and recognizing their physical contact state in unconstrained conditions. This is a challenging inference task given the need to reason beyond the local appearance of hands. The lack of…

Computer Vision and Pattern Recognition · Computer Science 2020-10-20 Supreeth Narasimhaswamy , Trung Nguyen , Minh Hoai

In recent years, the task of segmenting foreground objects from background in a video, i.e. video object segmentation (VOS), has received considerable attention. In this paper, we propose a single end-to-end trainable deep neural network,…

Computer Vision and Pattern Recognition · Computer Science 2019-10-02 Ye Lyu , George Vosselman , Gui-Song Xia , Michael Ying Yang

Many modern approaches for object detection are two-staged pipelines. The first stage identifies regions of interest which are then classified in the second stage. Faster R-CNN is such an approach for object detection which combines both…

Computer Vision and Pattern Recognition · Computer Science 2017-05-01 Christian Eggert , Dan Zecha , Stephan Brehm , Rainer Lienhart

In the conventional person Re-ID setting, it is widely assumed that cropped person images are for each individual. However, in a crowded scene, off-shelf-detectors may generate bounding boxes involving multiple people, where the large…

Computer Vision and Pattern Recognition · Computer Science 2020-08-18 Shizhen Zhao , Changxin Gao , Jun Zhang , Hao Cheng , Chuchu Han , Xinyang Jiang , Xiaowei Guo , Wei-Shi Zheng , Nong Sang , Xing Sun

Crowdedness caused by overlapping among similar objects is a ubiquitous challenge in the field of 2D visual object detection. In this paper, we first underline two main effects of the crowdedness issue: 1) IoU-confidence correlation…

Computer Vision and Pattern Recognition · Computer Science 2022-11-23 Jiangfan Deng , Dewen Fan , Xiaosong Qiu , Feng Zhou

Occluded pedestrian re-identification (ReID) in base station environments is a critical task in computer vision, particularly for surveillance and security applications. This task faces numerous challenges, as occlusions often obscure key…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Ge Gao , Zishuo Gao , Hongyan Cui , Zhiyang Jia , Zhuang Luo , ChaoPeng Liu

Person re-identification (Re-ID) technology plays an increasingly crucial role in intelligent surveillance systems. Widespread occlusion significantly impacts the performance of person Re-ID. Occluded person Re-ID refers to a pedestrian…

Computer Vision and Pattern Recognition · Computer Science 2023-11-02 Enhao Ning , Changshuo Wang , Huang Zhangc , Xin Ning , Prayag Tiwari

Unsupervised object discovery aims to localize objects in images, while removing the dependence on annotations required by most deep learning-based methods. To address this problem, we propose a fully unsupervised, bottom-up approach, for…

Computer Vision and Pattern Recognition · Computer Science 2022-12-21 Sandra Kara , Hejer Ammar , Florian Chabot , Quoc-Cuong Pham

Crowd counting on static images is a challenging problem due to scale variations. Recently deep neural networks have been shown to be effective in this task. However, existing neural-networks-based methods often use the multi-column or…

Computer Vision and Pattern Recognition · Computer Science 2017-02-09 Lingke Zeng , Xiangmin Xu , Bolun Cai , Suo Qiu , Tong Zhang

Multi-People Tracking in an open-world setting requires a special effort in precise detection. Moreover, temporal continuity in the detection phase gains more importance when scene cluttering introduces the challenging problems of occluded…

Computer Vision and Pattern Recognition · Computer Science 2018-09-19 Matteo Fabbri , Fabio Lanzi , Simone Calderara , Andrea Palazzi , Roberto Vezzani , Rita Cucchiara

Analyzing complex scenes with Deep Neural Networks is a challenging task, particularly when images contain multiple objects that partially occlude each other. Existing approaches to image analysis mostly process objects independently and do…

Computer Vision and Pattern Recognition · Computer Science 2021-04-02 Xiaoding Yuan , Adam Kortylewski , Yihong Sun , Alan Yuille

In recent years, object detection has experienced impressive progress. Despite these improvements, there is still a significant gap in the performance between the detection of small and large objects. We analyze the current state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2019-02-21 Mate Kisantal , Zbigniew Wojna , Jakub Murawski , Jacek Naruniec , Kyunghyun Cho