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People detection in single 2D images has improved greatly in recent years. However, comparatively little of this progress has percolated into multi-camera multi-people tracking algorithms, whose performance still degrades severely when…

Computer Vision and Pattern Recognition · Computer Science 2017-04-21 Pierre Baqué , François Fleuret , Pascal Fua

Neural Radiance Fields (NeRFs) are a powerful representation for modeling a 3D scene as a continuous function. Though NeRF is able to render complex 3D scenes with view-dependent effects, few efforts have been devoted to exploring its…

Computer Vision and Pattern Recognition · Computer Science 2022-11-18 Yifan Jiang , Peter Hedman , Ben Mildenhall , Dejia Xu , Jonathan T. Barron , Zhangyang Wang , Tianfan Xue

In this paper, we present the novel task of estimating the extrinsic parameters of a virtual camera relative to a real camera in exercise videos with a mirror. This task poses a significant challenge in scenarios where the views from the…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Longyun Liao , Rong Zheng , Andrew Mitchell

We present a novel method for recovering the absolute pose and shape of a human in a pre-scanned scene given a single image. Unlike previous methods that perform sceneaware mesh optimization, we propose to first estimate absolute position…

Computer Vision and Pattern Recognition · Computer Science 2023-06-07 Zehong Shen , Zhi Cen , Sida Peng , Qing Shuai , Hujun Bao , Xiaowei Zhou

One of the core activities of an active observer involves moving to secure a "better" view of the scene, where the definition of "better" is task-dependent. This paper focuses on the task of human pose estimation from videos capturing a…

Robotics · Computer Science 2024-07-03 Jingxi Chen , Botao He , Chahat Deep Singh , Cornelia Fermuller , Yiannis Aloimonos

The problem of inferring object shape from a single 2D image is underconstrained. Prior knowledge about what objects are plausible can help, but even given such prior knowledge there may still be uncertainty about the shapes of occluded…

Computer Vision and Pattern Recognition · Computer Science 2022-11-01 Matthew D. Hoffman , Tuan Anh Le , Pavel Sountsov , Christopher Suter , Ben Lee , Vikash K. Mansinghka , Rif A. Saurous

Recent years have witnessed tremendous progress in the 3D reconstruction of dynamic humans from a monocular video with the advent of neural rendering techniques. This task has a wide range of applications, including the creation of virtual…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Kanghao Chen , Zeyu Wang , Lin Wang

Understanding people's actions and interactions typically depends on seeing them. Automating the process of action recognition from visual data has been the topic of much research in the computer vision community. But what if it is too…

Computer Vision and Pattern Recognition · Computer Science 2019-09-23 Tianhong Li , Lijie Fan , Mingmin Zhao , Yingcheng Liu , Dina Katabi

Capturing a 3D human body is one of the important tasks in computer vision with a wide range of applications such as virtual reality and sports analysis. However, conventional frame cameras are limited by their temporal resolution and…

Computer Vision and Pattern Recognition · Computer Science 2024-04-17 Kai Kohyama , Shintaro Shiba , Yoshimitsu Aoki

In this paper, we propose a new single shot method for multi-person 3D human pose estimation in complex images. The model jointly learns to locate the human joints in the image, to estimate their 3D coordinates and to group these…

Computer Vision and Pattern Recognition · Computer Science 2021-01-08 Abdallah Benzine , Bertrand Luvison , Quoc Cuong Pham , Catherine Achard

3D mesh segmentation is an important task with many biomedical applications. The human body has bilateral symmetry and some variations in organ positions. It allows us to expect a positive effect of rotation and inversion invariant layers…

Image and Video Processing · Electrical Eng. & Systems 2023-11-07 Vladislav Dordiuk , Maksim Dzhigil , Konstantin Ushenin

Inferring 3D human pose from 2D images is a challenging and long-standing problem in the field of computer vision with many applications including motion capture, virtual reality, surveillance or gait analysis for sports and medicine. We…

Computer Vision and Pattern Recognition · Computer Science 2022-10-11 Luca Schmidtke , Benjamin Hou , Athanasios Vlontzos , Bernhard Kainz

The neural radiance field (NeRF) for realistic novel view synthesis requires camera poses to be pre-acquired by a structure-from-motion (SfM) approach. This two-stage strategy is not convenient to use and degrades the performance because…

Computer Vision and Pattern Recognition · Computer Science 2022-10-04 Shu Chen , Yang Zhang , Yaxin Xu , Beiji Zou

Until recently Intelligence, Surveillance, and Reconnaissance (ISR) focused on acquiring behavioral information of the targets and their activities. Continuous evolution of intelligence being gathered of the human centric activities has put…

Computer Vision and Pattern Recognition · Computer Science 2014-10-07 Atul Kanaujia

The integration of multi-view imaging and pose estimation represents a significant advance in computer vision applications, offering new possibilities for understanding human movement and interactions. This work presents a new algorithm…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Daniel Bermuth , Alexander Poeppel , Wolfgang Reif

Driven by recent computer vision and robotic applications, recovering 3D human poses has become increasingly important and attracted growing interests. In fact, completing this task is quite challenging due to the diverse appearances,…

Computer Vision and Pattern Recognition · Computer Science 2019-01-16 Keze Wang , Liang Lin , Chenhan Jiang , Chen Qian , Pengxu Wei

We propose a system that learns to detect objects and infer their 3D poses in RGB-D images. Many existing systems can identify objects and infer 3D poses, but they heavily rely on human labels and 3D annotations. The challenge here is to…

Computer Vision and Pattern Recognition · Computer Science 2020-11-02 Mihir Prabhudesai , Shamit Lal , Hsiao-Yu Fish Tung , Adam W. Harley , Shubhankar Potdar , Katerina Fragkiadaki

Neural implicit modeling permits to achieve impressive 3D reconstruction results on small objects, while it exhibits significant limitations in large indoor scenes. In this work, we propose a novel neural implicit modeling method that…

Computer Vision and Pattern Recognition · Computer Science 2023-09-14 Federico Lincetto , Gianluca Agresti , Mattia Rossi , Pietro Zanuttigh

Reconstructing from multi-view images is a longstanding problem in 3D vision, where neural radiance fields (NeRFs) have shown great potential and get realistic rendered images of novel views. Currently, most NeRF methods either require…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Xin Wen , Xuening Zhu , Renjiao Yi , Zhifeng Wang , Chenyang Zhu , Kai Xu

Can freely moving humans or animals themselves serve as calibration targets for multi-camera systems while simultaneously estimating their correspondences across views? We humans can solve this problem by mentally rotating the observed 2D…

Computer Vision and Pattern Recognition · Computer Science 2025-08-08 Sang-Eun Lee , Ko Nishino , Shohei Nobuhara