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Automatic portrait video matting is an under-constrained problem. Most state-of-the-art methods only exploit the semantic information and process each frame individually. Their performance is compromised due to the lack of temporal…

Computer Vision and Pattern Recognition · Computer Science 2021-09-14 Qiqi Hou , Charlie Wang

Motion correction aims to prevent motion artefacts which may be caused by respiration, heartbeat, or head movements for example. In a preliminary step, the measured data is divided in gates corresponding to motion states, and displacement…

Optimization and Control · Mathematics 2024-10-15 Claire Delplancke , Kris Thielemans , Matthias J. Ehrhardt

Deducing a 3D human pose from a single 2D image is inherently challenging because multiple 3D poses can correspond to the same 2D representation. 3D data can resolve this pose ambiguity, but it is expensive to record and requires an…

Computer Vision and Pattern Recognition · Computer Science 2025-05-09 Christian Keilstrup Ingwersen , Rasmus Tirsgaard , Rasmus Nylander , Janus Nørtoft Jensen , Anders Bjorholm Dahl , Morten Rieger Hannemose

We present a method to capture temporally coherent dynamic clothing deformation from a monocular RGB video input. In contrast to the existing literature, our method does not require a pre-scanned personalized mesh template, and thus can be…

Computer Vision and Pattern Recognition · Computer Science 2020-11-24 Donglai Xiang , Fabian Prada , Chenglei Wu , Jessica Hodgins

Dynamic patterns are characterized by complex spatial and motion patterns. Understanding dynamic patterns requires a disentangled representational model that separates the factorial components. A commonly used model for dynamic patterns is…

Computer Vision and Pattern Recognition · Computer Science 2019-11-27 Jianwen Xie , Ruiqi Gao , Zilong Zheng , Song-Chun Zhu , Ying Nian Wu

When applied sequentially to video, frame-based networks often exhibit temporal inconsistency - for example, outputs that flicker between frames. This problem is amplified when the network inputs contain time-varying corruptions. In this…

Computer Vision and Pattern Recognition · Computer Science 2025-12-03 Matthew Dutson , Nathan Labiosa , Yin Li , Mohit Gupta

Although the essential nuance of human motion is often conveyed as a combination of body movements and hand gestures, the existing monocular motion capture approaches mostly focus on either body motion capture only ignoring hand parts or…

Computer Vision and Pattern Recognition · Computer Science 2020-08-20 Yu Rong , Takaaki Shiratori , Hanbyul Joo

In this paper we address a classification problem that has not been considered before, namely motion segmentation given pairwise matches only. Our contribution to this unexplored task is a novel formulation of motion segmentation as a…

Computer Vision and Pattern Recognition · Computer Science 2019-05-23 Federica Arrigoni , Tomas Pajdla

Capturing display screens with mobile devices has become increasingly common, yet the resulting images often suffer from severe degradations caused by the coexistence of moir\'e patterns and flicker-banding, leading to significant visual…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Libo Zhu , Zihan Zhou , Zhiyi Zhou , Yiyang Qu , Weihang Zhang , Keyu Shi , Yifan Fu , Yulun Zhang

This paper addresses the problem of 3D human pose estimation in the wild. A significant challenge is the lack of training data, i.e., 2D images of humans annotated with 3D poses. Such data is necessary to train state-of-the-art CNN…

Computer Vision and Pattern Recognition · Computer Science 2016-10-31 Grégory Rogez , Cordelia Schmid

This paper proposes a novel, abstraction-based, certified training method for robust image classifiers. Via abstraction, all perturbed images are mapped into intervals before feeding into neural networks for training. By training on…

Computer Vision and Pattern Recognition · Computer Science 2023-03-22 Zhaodi Zhang , Zhiyi Xue , Yang Chen , Si Liu , Yueling Zhang , Jing Liu , Min Zhang

Training state-of-the-art models for human pose estimation in videos requires datasets with annotations that are really hard and expensive to obtain. Although transformers have been recently utilized for body pose sequence modeling, related…

Computer Vision and Pattern Recognition · Computer Science 2022-10-20 Fabien Baradel , Romain Brégier , Thibault Groueix , Philippe Weinzaepfel , Yannis Kalantidis , Grégory Rogez

In this letter, we present a novel markerless 3D human motion capture (MoCap) system for unstructured, outdoor environments that uses a team of autonomous unmanned aerial vehicles (UAVs) with on-board RGB cameras and computation. Existing…

Computer Vision and Pattern Recognition · Computer Science 2022-04-27 Nitin Saini , Elia Bonetto , Eric Price , Aamir Ahmad , Michael J. Black

Biodiversity conservation depends on accurate, up-to-date information about wildlife population distributions. Motion-activated cameras, also known as camera traps, are a critical tool for population surveys, as they are cheap and…

Machine Learning · Computer Science 2019-10-23 Mohammad Sadegh Norouzzadeh , Dan Morris , Sara Beery , Neel Joshi , Nebojsa Jojic , Jeff Clune

When analyzing human motion videos, the output jitters from existing pose estimators are highly-unbalanced with varied estimation errors across frames. Most frames in a video are relatively easy to estimate and only suffer from slight…

Computer Vision and Pattern Recognition · Computer Science 2022-07-22 Ailing Zeng , Lei Yang , Xuan Ju , Jiefeng Li , Jianyi Wang , Qiang Xu

There has been extensive progress in the reconstruction and generation of 4D scenes from monocular casually-captured video. While these tasks rely heavily on known camera poses, the problem of finding such poses using structure-from-motion…

Computer Vision and Pattern Recognition · Computer Science 2024-12-02 Lily Goli , Sara Sabour , Mark Matthews , Marcus Brubaker , Dmitry Lagun , Alec Jacobson , David J. Fleet , Saurabh Saxena , Andrea Tagliasacchi

Deep learning is now the gold standard in computer vision-based quality inspection systems. In order to detect defects, supervised learning is often utilized, but necessitates a large amount of annotated images, which can be costly:…

Computer Vision and Pattern Recognition · Computer Science 2021-07-23 Pierre Gutierrez , Maria Luschkova , Antoine Cordier , Mustafa Shukor , Mona Schappert , Tim Dahmen

In video action recognition, shortcut static features can interfere with the learning of motion features, resulting in poor out-of-distribution (OOD) generalization. The video background is clearly a source of static bias, but the video…

Computer Vision and Pattern Recognition · Computer Science 2023-09-28 Haoxin Li , Yuan Liu , Hanwang Zhang , Boyang Li

We present MAMMA, a markerless motion-capture pipeline that accurately recovers SMPL-X parameters from multi-view video of two-person interaction sequences. Traditional motion-capture systems rely on physical markers. Although they offer…

Data-driven character animation based on motion capture can produce highly naturalistic behaviors and, when combined with physics simulation, can provide for natural procedural responses to physical perturbations, environmental changes, and…

Graphics · Computer Science 2018-10-16 Xue Bin Peng , Angjoo Kanazawa , Jitendra Malik , Pieter Abbeel , Sergey Levine