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Unsupervised multi-object segmentation has shown impressive results on images by utilizing powerful semantics learned from self-supervised pretraining. An additional modality such as depth or motion is often used to facilitate the…

计算机视觉与模式识别 · 计算机科学 2023-10-12 Görkay Aydemir , Weidi Xie , Fatma Güney

Recent advancements in dense out-of-distribution (OOD) detection have primarily focused on scenarios where the training and testing datasets share a similar domain, with the assumption that no domain shift exists between them. However, in…

计算机视觉与模式识别 · 计算机科学 2023-10-31 Zhitong Gao , Shipeng Yan , Xuming He

Temporal action segmentation (TAS) is a critical step toward long-term video understanding. Recent studies follow a pattern that builds models based on features instead of raw video picture information. However, we claim those models are…

计算机视觉与模式识别 · 计算机科学 2023-10-11 Wujun Wen , Yunheng Li , Zhuben Dong , Lin Feng , Wanxiao Yang , Shenlan Liu

Video object segmentation aims at accurately segmenting the target object regions across consecutive frames. It is technically challenging for coping with complicated factors (e.g., shape deformations, occlusion and out of the lens). Recent…

计算机视觉与模式识别 · 计算机科学 2019-07-03 Peng Sun , Peiwen Lin , Guangliang Cheng , Jianping Shi , Jiawan Zhang , Xi Li

Although the performance of Temporal Action Segmentation (TAS) has improved in recent years, achieving promising results often comes with a high computational cost due to dense inputs, complex model structures, and resource-intensive…

计算机视觉与模式识别 · 计算机科学 2024-05-28 Peiyao Wang , Yuewei Lin , Erik Blasch , Jie Wei , Haibin Ling

This paper introduces temporally local metrics for Multi-Object Tracking. These metrics are obtained by restricting existing metrics based on track matching to a finite temporal horizon, and provide new insight into the ability of trackers…

计算机视觉与模式识别 · 计算机科学 2021-04-07 Jack Valmadre , Alex Bewley , Jonathan Huang , Chen Sun , Cristian Sminchisescu , Cordelia Schmid

Significant progress has been made in Video Object Segmentation (VOS), the video object tracking task in its finest level. While the VOS task can be naturally decoupled into image semantic segmentation and video object tracking,…

计算机视觉与模式识别 · 计算机科学 2020-07-14 Xuhua Huang , Jiarui Xu , Yu-Wing Tai , Chi-Keung Tang

Segmentation of indicated targets aids in the precise analysis of optical coherence tomography angiography (OCTA) samples. Existing segmentation methods typically perform on 2D projection targets, making it challenging to capture the…

计算机视觉与模式识别 · 计算机科学 2024-09-17 Xinrun Chen , Chengliang Wang , Haojian Ning , Mengzhan Zhang , Mei Shen , Shiying Li

We present an approach to semi-supervised video object segmentation, in the context of the DAVIS 2017 challenge. Our approach combines category-based object detection, category-independent object appearance segmentation and temporal object…

计算机视觉与模式识别 · 计算机科学 2017-07-21 Gilad Sharir , Eddie Smolyansky , Itamar Friedman

We aim to tackle a novel task in action detection - Online Detection of Action Start (ODAS) in untrimmed, streaming videos. The goal of ODAS is to detect the start of an action instance, with high categorization accuracy and low detection…

计算机视觉与模式识别 · 计算机科学 2018-07-24 Zheng Shou , Junting Pan , Jonathan Chan , Kazuyuki Miyazawa , Hassan Mansour , Anthony Vetro , Xavier Giro-i-Nieto , Shih-Fu Chang

Weakly-supervised temporal action localization aims to localize actions in untrimmed videos with only video-level action category labels. Most of previous methods ignore the incompleteness issue of Class Activation Sequences (CAS),…

计算机视觉与模式识别 · 计算机科学 2021-04-07 Chen Ju , Peisen Zhao , Siheng Chen , Ya Zhang , Xiaoyun Zhang , Qi Tian

Accurate perception of the surrounding scene is helpful for robots to make reasonable judgments and behaviours. Therefore, developing effective scene representation and recognition methods are of significant importance in robotics.…

计算机视觉与模式识别 · 计算机科学 2021-08-03 Bo Miao , Liguang Zhou , Ajmal Mian , Tin Lun Lam , Yangsheng Xu

The temporal action segmentation task segments videos temporally and predicts action labels for all frames. Fully supervising such a segmentation model requires dense frame-wise action annotations, which are expensive and tedious to…

计算机视觉与模式识别 · 计算机科学 2022-12-20 Guodong Ding , Angela Yao

Video amodal segmentation is a particularly challenging task in computer vision, which requires to deduce the full shape of an object from the visible parts of it. Recently, some studies have achieved promising performance by using motion…

计算机视觉与模式识别 · 计算机科学 2023-09-26 Ke Fan , Jingshi Lei , Xuelin Qian , Miaopeng Yu , Tianjun Xiao , Tong He , Zheng Zhang , Yanwei Fu

Due to the problem of performance constraints of unsupervised video object detection, its large-scale application is limited. In response to this pain point, we propose another excellent method to solve this problematic point. By…

计算机视觉与模式识别 · 计算机科学 2022-11-22 Chao Hu , Liqiang Zhu

Temporal action detection (TAD) aims to detect all action boundaries and their corresponding categories in an untrimmed video. The unclear boundaries of actions in videos often result in imprecise predictions of action boundaries by…

计算机视觉与模式识别 · 计算机科学 2023-09-12 Dingfeng Shi , Qiong Cao , Yujie Zhong , Shan An , Jian Cheng , Haogang Zhu , Dacheng Tao

In the analysis of optical coherence tomography angiography (OCTA) images, the operation of segmenting specific targets is necessary. Existing methods typically train on supervised datasets with limited samples (approximately a few…

计算机视觉与模式识别 · 计算机科学 2023-09-22 Chengliang Wang , Xinrun Chen , Haojian Ning , Shiying Li

Out-of-Distribution (OoD) segmentation is critical for safety-sensitive applications like autonomous driving. However, existing mask-based methods often suffer from boundary imprecision, inconsistent anomaly scores within objects, and false…

计算机视觉与模式识别 · 计算机科学 2025-07-14 Jeonghoon Song , Sunghun Kim , Jaegyun Im , Byeongjoon Noh

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…

计算机视觉与模式识别 · 计算机科学 2022-11-03 Suhwan Cho , Minhyeok Lee , Seunghoon Lee , Chaewon Park , Donghyeong Kim , Sangyoun Lee

Point-Level temporal action localization (PTAL) aims to localize actions in untrimmed videos with only one timestamp annotation for each action instance. Existing methods adopt the frame-level prediction paradigm to learn from the sparse…

计算机视觉与模式识别 · 计算机科学 2020-12-16 Chen Ju , Peisen Zhao , Ya Zhang , Yanfeng Wang , Qi Tian