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There have been many proposals for algorithms segmenting human whole-body motion in the literature. However, the wide range of use cases, datasets, and quality measures that were used for the evaluation render the comparison of algorithms…

Robotics · Computer Science 2018-10-02 Christian R. G. Dreher , Nicklas Kulp , Christian Mandery , Mirko Wächter , Tamim Asfour

We present a novel method for recovering world-grounded human motion from monocular video. The main challenge lies in the ambiguity of defining the world coordinate system, which varies between sequences. Previous approaches attempt to…

Computer Vision and Pattern Recognition · Computer Science 2024-09-11 Zehong Shen , Huaijin Pi , Yan Xia , Zhi Cen , Sida Peng , Zechen Hu , Hujun Bao , Ruizhen Hu , Xiaowei Zhou

Unsupervised video object segmentation (VOS) aims to detect the most salient object in a video sequence at the pixel level. In unsupervised VOS, most state-of-the-art methods leverage motion cues obtained from optical flow maps in addition…

Computer Vision and Pattern Recognition · Computer Science 2022-11-03 Suhwan Cho , Minhyeok Lee , Seunghoon Lee , Chaewon Park , Donghyeong Kim , Sangyoun Lee

In this paper, a sequential search method for finding the global minimum of an objective function is presented, The descent gradient search is repeated until the global minimum is obtained. The global minimum is located by a process of…

Optimization and Control · Mathematics 2024-02-06 Mohamed Tifroute , Anouar Lahmdani , Hassane Bouzahir

We describe an unsupervised method to detect and segment portions of images of live scenes that, at some point in time, are seen moving as a coherent whole, which we refer to as objects. Our method first partitions the motion field by…

Computer Vision and Pattern Recognition · Computer Science 2021-04-06 Yanchao Yang , Brian Lai , Stefano Soatto

Sharpened dimensionality reduction (SDR), which belongs to the class of multidimensional projection techniques, has recently been introduced to tackle the challenges in the exploratory and visual analysis of high-dimensional data. SDR has…

Computer Vision and Pattern Recognition · Computer Science 2022-02-24 Jeewon Heo , Youngjoo Kim , Jos B. T. M. Roerdink

We address the problem of segmenting an object given a natural language expression that describes it. Current techniques tackle this task by either (\textit{i}) directly or recursively merging linguistic and visual information in the…

Computer Vision and Pattern Recognition · Computer Science 2018-07-24 Edgar Margffoy-Tuay , Juan C. Pérez , Emilio Botero , Pablo Arbeláez

Handling occlusion remains a significant challenge for video instance-level tasks like Multiple Object Tracking (MOT) and Video Instance Segmentation (VIS). In this paper, we propose a novel framework, Amodal-Aware Video Instance…

Computer Vision and Pattern Recognition · Computer Science 2025-04-11 Minh Tran , Thang Pham , Winston Bounsavy , Tri Nguyen , Ngan Le

During about 30 years, a lot of research teams have worked on the big challenge of detection of moving objects in various challenging environments. First applications concern static cameras but with the rise of the mobile sensors studies on…

Computer Vision and Pattern Recognition · Computer Science 2020-01-16 Marie-Neige Chapel , Thierry Bouwmans

In this paper, we propose a novel method for monocular depth estimation in dynamic scenes. We first explore the arbitrariness of object's movement trajectory in dynamic scenes theoretically. To overcome the arbitrariness, we use assume that…

Computer Vision and Pattern Recognition · Computer Science 2024-11-08 Kebin Peng , John Quarles , Kevin Desai

We introduce a visual motion segmentation method employing spherical geometry for fisheye cameras and automoated driving. Three commonly used geometric constraints in pin-hole imagery (the positive height, positive depth and epipolar…

Computer Vision and Pattern Recognition · Computer Science 2022-08-10 Letizia Mariotti , Ciaran Eising

This letter presents a new spectral-clustering-based approach to the subspace clustering problem. Underpinning the proposed method is a convex program for optimal direction search, which for each data point d finds an optimal direction in…

Computer Vision and Pattern Recognition · Computer Science 2017-11-28 Mostafa Rahmani , George Atia

Person re-identification (re-id) aims to match pedestrians observed by disjoint camera views. It attracts increasing attention in computer vision due to its importance to surveillance system. To combat the major challenge of cross-view…

Computer Vision and Pattern Recognition · Computer Science 2017-09-08 Lin Wu , Yang Wang , Junbin Gao , Xue Li

Object Skeletonization is the process of extracting skeletal, line-like representations of shapes. It provides a very useful tool for geometric shape understanding and minimal shape representation. It also has a wide variety of…

Computer Vision and Pattern Recognition · Computer Science 2021-12-23 Mohamed A. Ghanem , Alaa A. Anani

We consider a problem that recovers a 2-D object and the underlying view angle distribution from its noisy projection tilt series taken at unknown view angles. Traditional approaches rely on the estimation of the view angles of the…

Signal Processing · Electrical Eng. & Systems 2019-05-27 Lingda Wang , Zhizhen Zhao

Most scenes in practical applications are dynamic scenes containing moving objects, so segmenting accurately moving objects is crucial for many computer vision applications. In order to efficiently segment out all moving objects in the…

Computer Vision and Pattern Recognition · Computer Science 2020-07-28 Chenjie Wang , Chengyuan Li , Bin Luo

Text-motion retrieval aims to learn a semantically aligned latent space between natural language descriptions and 3D human motion skeleton sequences, enabling bidirectional search across the two modalities. Most existing methods use a…

Computer Vision and Pattern Recognition · Computer Science 2026-03-11 Yao Zhang , Zhuchenyang Liu , Yanlan He , Thomas Ploetz , Yu Xiao

Identifying predictive world models for robots in novel environments from sparse online observations is essential for robot task planning and execution in novel environments. However, existing methods that leverage differentiable…

Robotics · Computer Science 2025-05-13 Yifan Zhu , Tianyi Xiang , Aaron Dollar , Zherong Pan

Supervised person re-identification (ReID) often has poor scalability and usability in real-world deployments due to domain gaps and the lack of annotations for the target domain data. Unsupervised person ReID through domain adaptation is…

Computer Vision and Pattern Recognition · Computer Science 2020-07-13 Xin Jin , Cuiling Lan , Wenjun Zeng , Zhibo Chen

Dimension reduction techniques typically seek an embedding of a high-dimensional point cloud into a low-dimensional Euclidean space which optimally preserves the geometry of the input data. Based on expert knowledge, one may instead wish to…

Optimization and Control · Mathematics 2025-02-28 Ranthony A. Clark , Tom Needham , Thomas Weighill