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Soft tissue tracking is crucial for computer-assisted interventions. Existing approaches mainly rely on extracting discriminative features from the template and videos to recover corresponding matches. However, it is difficult to adopt…

计算机视觉与模式识别 · 计算机科学 2024-05-27 Jiaxin Guo , Jiangliu Wang , Zhaoshuo Li , Tongyu Jia , Qi Dou , Yun-Hui Liu

Extracting and predicting object structure and dynamics from videos without supervision is a major challenge in machine learning. To address this challenge, we adopt a keypoint-based image representation and learn a stochastic dynamics…

计算机视觉与模式识别 · 计算机科学 2020-03-03 Matthias Minderer , Chen Sun , Ruben Villegas , Forrester Cole , Kevin Murphy , Honglak Lee

This paper addresses the problem of estimating and tracking human body keypoints in complex, multi-person video. We propose an extremely lightweight yet highly effective approach that builds upon the latest advancements in human detection…

计算机视觉与模式识别 · 计算机科学 2018-05-04 Rohit Girdhar , Georgia Gkioxari , Lorenzo Torresani , Manohar Paluri , Du Tran

Visual-based localization has made significant progress, yet its performance often drops in large-scale, outdoor, and long-term settings due to factors like lighting changes, dynamic scenes, and low-texture areas. These challenges degrade…

机器人学 · 计算机科学 2025-09-11 Sai Puneeth Reddy Gottam , Haoming Zhang , Eivydas Keras

Unsupervised domain adaptation is effective in leveraging rich information from a labeled source domain to an unlabeled target domain. Though deep learning and adversarial strategy made a significant breakthrough in the adaptability of…

机器学习 · 计算机科学 2020-08-25 You-Wei Luo , Chuan-Xian Ren , Dao-Qing Dai , Hong Yan

Focus is a cornerstone of photography, yet autofocus systems often fail to capture the intended subject, and users frequently wish to adjust focus after capture. We introduce a novel method for realistic post-capture refocusing using video…

计算机视觉与模式识别 · 计算机科学 2025-12-30 SaiKiran Tedla , Zhoutong Zhang , Xuaner Zhang , Shumian Xin

Diffusion models have emerged as a key pillar of foundation models in visual domains. One of their critical applications is to universally solve different downstream inverse tasks via a single diffusion prior without re-training for each…

机器学习 · 计算机科学 2023-10-03 Morteza Mardani , Jiaming Song , Jan Kautz , Arash Vahdat

The problem of video object segmentation can become extremely challenging when multiple instances co-exist. While each instance may exhibit large scale and pose variations, the problem is compounded when instances occlude each other causing…

计算机视觉与模式识别 · 计算机科学 2018-03-15 Xiaoxiao Li , Chen Change Loy

Domain adaptation techniques address the problem of reducing the sensitivity of machine learning methods to the so-called domain shift, namely the difference between source (training) and target (test) data distributions. In particular,…

计算机视觉与模式识别 · 计算机科学 2017-05-24 Pietro Morerio , Vittorio Murino

Video-based person re-identification deals with the inherent difficulty of matching unregulated sequences with different length and with incomplete target pose/viewpoint structure. Common approaches operate either by reducing the problem to…

计算机视觉与模式识别 · 计算机科学 2019-03-28 Alessandro Borgia , Yang Hua , Elyor Kodirov , Neil M. Robertson

The paper addresses the problem of learning a regression model parameterized by a fixed-rank positive semidefinite matrix. The focus is on the nonlinear nature of the search space and on scalability to high-dimensional problems. The…

机器学习 · 计算机科学 2011-02-01 Gilles Meyer , Silvere Bonnabel , Rodolphe Sepulchre

Existing deep trackers mainly use convolutional neural networks pre-trained for generic object recognition task for representations. Despite demonstrated successes for numerous vision tasks, the contributions of using pre-trained deep…

计算机视觉与模式识别 · 计算机科学 2019-04-04 Xin Li , Chao Ma , Baoyuan Wu , Zhenyu He , Ming-Hsuan Yang

Given the vast amounts of video available online, and recent breakthroughs in object detection with static images, object detection in video offers a promising new frontier. However, motion blur and compression artifacts cause substantial…

计算机视觉与模式识别 · 计算机科学 2016-07-20 Subarna Tripathi , Zachary C. Lipton , Serge Belongie , Truong Nguyen

The current strive towards end-to-end trainable computer vision systems imposes major challenges for the task of visual tracking. In contrast to most other vision problems, tracking requires the learning of a robust target-specific…

计算机视觉与模式识别 · 计算机科学 2020-06-11 Goutam Bhat , Martin Danelljan , Luc Van Gool , Radu Timofte

We introduce a framework that enables both multi-view character consistency and 3D camera control in video diffusion models through a novel customization data pipeline. We train the character consistency component with recorded volumetric…

Siamese trackers perform similarity matching with templates (i.e., target models) to recursively localize objects within a search region. Several strategies have been proposed in the literature to update a template based on the tracker…

计算机视觉与模式识别 · 计算机科学 2022-02-22 Madhu Kiran , Le Thanh Nguyen-Meidine , Rajat Sahay , Rafael Menelau Oliveira E Cruz , Louis-Antoine Blais-Morin , Eric Granger

We propose a new variational model for joint image reconstruction and motion estimation in spatiotemporal imaging, which is investigated along a general framework that we present with shape theory. This model consists of two components, one…

数值分析 · 数学 2019-11-06 Chong Chen , Barbara Gris , Ozan Öktem

A new framework is developed to intrinsically analyze sparsely observed Riemannian functional data. It features four innovative components: a frame-independent covariance function, a smooth vector bundle termed covariance vector bundle, a…

统计方法学 · 统计学 2022-05-18 Lingxuan Shao , Zhenhua Lin , Fang Yao

The use of local detectors and descriptors in typical computer vision pipelines work well until variations in viewpoint and appearance change become extreme. Past research in this area has typically focused on one of two approaches to this…

计算机视觉与模式识别 · 计算机科学 2022-03-25 Udit Singh Parihar , Aniket Gujarathi , Kinal Mehta , Satyajit Tourani , Sourav Garg , Michael Milford , K. Madhava Krishna

One of the fundamental challenges in video object segmentation is to find an effective representation of the target and background appearance. The best performing approaches resort to extensive fine-tuning of a convolutional neural network…

计算机视觉与模式识别 · 计算机科学 2018-12-10 Joakim Johnander , Martin Danelljan , Emil Brissman , Fahad Shahbaz Khan , Michael Felsberg