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Video object segmentation is a fundamental research problem in computer vision. Recent techniques have often applied attention mechanism to object representation learning from video sequences. However, due to temporal changes in the video…

Computer Vision and Pattern Recognition · Computer Science 2024-03-19 Quang-Trung Truong , Duc Thanh Nguyen , Binh-Son Hua , Sai-Kit Yeung

Modern one-stage video instance segmentation networks suffer from two limitations. First, convolutional features are neither aligned with anchor boxes nor with ground-truth bounding boxes, reducing the mask sensitivity to spatial location.…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 Minghan Li , Shuai Li , Lida Li , Lei Zhang

Referring Audio-Visual Segmentation (Ref-AVS) aims to segment specific objects in videos based on natural language expressions involving audio, vision, and text information. This task poses significant challenges in cross-modal reasoning…

Computer Vision and Pattern Recognition · Computer Science 2025-09-24 Dian Jin , Yanghao Zhou , Jinxing Zhou , Jiaqi Ma , Ruohao Guo , Dan Guo

Vision-language models (VLMs) have advanced multimodal reasoning but still face challenges in spatial reasoning for 3D scenes and complex object configurations. To address this, we introduce SpatialViLT, an enhanced VLM that integrates…

Computer Vision and Pattern Recognition · Computer Science 2025-10-07 Chashi Mahiul Islam , Oteo Mamo , Samuel Jacob Chacko , Xiuwen Liu , Weikuan Yu

Online Video Large Language Models (VideoLLMs) play a critical role in supporting responsive, real-time interaction. Existing methods focus on streaming perception, lacking a synchronized logical reasoning stream. However, directly applying…

Computer Vision and Pattern Recognition · Computer Science 2026-03-13 Yiran Guan , Liang Yin , Dingkang Liang , Jianzhong Ju , Zhenbo Luo , Jian Luan , Yuliang Liu , Xiang Bai

In vision-language models (VLMs), misalignment between textual descriptions and visual coordinates often induces hallucinations. This issue becomes particularly severe in dense prediction tasks such as spatial-temporal video grounding…

Computer Vision and Pattern Recognition · Computer Science 2026-02-13 Xiaowen Zhang , Zhi Gao , Licheng Jiao , Lingling Li , Qing Li

Video foreground segmentation (VFS) is an important computer vision task wherein one aims to segment the objects under motion from the background. Most of the current methods are image-based, i.e., rely only on spatial cues while ignoring…

Computer Vision and Pattern Recognition · Computer Science 2024-02-05 Praveen Kumar Pokala , Jaya Sai Kiran Patibandla , Naveen Kumar Pandey , Balakrishna Reddy Pailla

Referring video object segmentation (RVOS) requires segmenting and tracking objects in videos conditioned on natural-language expressions, demanding fine-grained understanding of both appearance and motion. Building on Sa2VA, which couples…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Quanzhu Niu , Dengxian Gong , Shihao Chen , Tao Zhang , Yikang Zhou , Haobo Yuan , Lu Qi , Xiangtai Li , Shunping Ji

Referring Video Object Segmentation (RefVOS) seeks to segment target objects in videos guided by natural language descriptions, demanding both temporal reasoning and fine-grained visual comprehension. Existing sampling strategies for…

Computer Vision and Pattern Recognition · Computer Science 2025-10-13 Ming Dai , Sen Yang , Boqiang Duan , Wankou Yang , Jingdong Wang

Recently, video object segmentation (VOS) referred by multi-modal signals, e.g., language and audio, has evoked increasing attention in both industry and academia. It is challenging for exploring the semantic alignment within modalities and…

Computer Vision and Pattern Recognition · Computer Science 2023-12-13 Shilin Yan , Renrui Zhang , Ziyu Guo , Wenchao Chen , Wei Zhang , Hongyang Li , Yu Qiao , Hao Dong , Zhongjiang He , Peng Gao

Complex video reasoning remains a significant challenge for Multimodal Large Language Models (MLLMs), as current R1-based methodologies often prioritize text-centric reasoning derived from text-based and image-based developments. In video…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Bo Fang , Yuxin Song , Qiangqiang Wu , Haoyuan Sun , Wenhao Wu , Antoni B. Chan

Capturing spatial relationships from visual inputs is a cornerstone of human-like general intelligence. Several previous studies have tried to enhance the spatial awareness of Vision-Language Models (VLMs) by adding extra expert encoders,…

Computer Vision and Pattern Recognition · Computer Science 2025-11-10 Rui Yang , Ziyu Zhu , Yanwei Li , Jingjia Huang , Shen Yan , Siyuan Zhou , Zhe Liu , Xiangtai Li , Shuangye Li , Wenqian Wang , Yi Lin , Hengshuang Zhao

Diffusion models have shown great potential in generating realistic image detail. However, adapting these models to video super-resolution (VSR) remains challenging due to their inherent stochasticity and lack of temporal modeling. Previous…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Yong Liu , Jinshan Pan , Yinchuan Li , Qingji Dong , Chao Zhu , Yu Guo , Fei Wang

Referring image segmentation (RIS) aims to segment an object mentioned in natural language from an image. The main challenge is text-to-pixel fine-grained correlation. In the previous methods, the final results are obtained by convolutions…

Computer Vision and Pattern Recognition · Computer Science 2024-10-15 Yichen Yan , Xingjian He , Wenxuan Wang , Sihan Chen , Jing Liu

Multi-modal Video Object Segmentation (VOS), including RGB-Thermal, RGB-Depth, and RGB-Event, has garnered attention due to its capability to address challenging scenarios where traditional VOS methods struggle, such as extreme…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Pinxue Guo , Wanyun Li , Hao Huang , Lingyi Hong , Xinyu Zhou , Zhaoyu Chen , Jinglun Li , Kaixun Jiang , Wei Zhang , Wenqiang Zhang

The video topic segmentation (VTS) task segments videos into intelligible, non-overlapping topics, facilitating efficient comprehension of video content and quick access to specific content. VTS is also critical to various downstream video…

Artificial Intelligence · Computer Science 2024-12-31 Hai Yu , Chong Deng , Qinglin Zhang , Jiaqing Liu , Qian Chen , Wen Wang

In this paper, we present a unified, end-to-end trainable spatiotemporal CNN model for VOS, which consists of two branches, i.e., the temporal coherence branch and the spatial segmentation branch. Specifically, the temporal coherence branch…

Computer Vision and Pattern Recognition · Computer Science 2019-04-05 Kai Xu , Longyin Wen , Guorong Li , Liefeng Bo , Qingming Huang

Cause-and-effect reasoning in video is a significant challenge for Vision-Language Models (VLMs), as it requires going beyond surface-level perception to a deeper understanding of causal mechanisms. However, existing benchmarks rarely…

Computer Vision and Pattern Recognition · Computer Science 2026-05-25 Mingfang Zhang , Jingjing Pan , Ashutosh Kumar , Rajat Saini , Mustafa Erdogan , Hsuan-Kung Yang , Caixin Kang , Yifei Huang , Yoichi Sato , Quan Kong

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…

Computer Vision and Pattern Recognition · Computer Science 2019-07-03 Peng Sun , Peiwen Lin , Guangliang Cheng , Jianping Shi , Jiawan Zhang , Xi Li

Video Instance Segmentation (VIS) jointly tackles multi-object detection, tracking, and segmentation in video sequences. In the past, VIS methods mirrored the fragmentation of these subtasks in their architectural design, hence missing out…

Computer Vision and Pattern Recognition · Computer Science 2022-07-25 Adrià Caelles , Tim Meinhardt , Guillem Brasó , Laura Leal-Taixé