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Referring Video Object Segmentation (RVOS) requires segmenting specific objects in a video guided by a natural language description. The core challenge of RVOS is to anchor abstract linguistic concepts onto a specific set of pixels and…

Computer Vision and Pattern Recognition · Computer Science 2026-02-27 Zanyi Wang , Dengyang Jiang , Liuzhuozheng Li , Sizhe Dang , Chengzu Li , Harry Yang , Guang Dai , Mengmeng Wang , Jingdong Wang

Volumetric Reasoning Segmentation (VRS) aims to segment a target region in a 3D medical scan from a free-form clinical query, where the referent is often implicit and requires both medical knowledge and volume-grounded reasoning. Existing…

Computer Vision and Pattern Recognition · Computer Science 2026-05-27 Zichun Wang , Hairong Shi , Bingzheng Wei , Yan Xu , Zihua Wang

Recent efforts in video reasoning segmentation (VRS) integrate large language models (LLMs) with perception models to localize and track objects via textual instructions, achieving barely satisfactory results in simple scenarios. However,…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Rongkun Zheng , Lu Qi , Xi Chen , Yi Wang , Kun Wang , Yu Qiao , Hengshuang Zhao

Despite extensive research, open-vocabulary segmentation methods still struggle to generalize across diverse domains. To reduce the computational cost of adapting Vision-Language Models (VLMs) while preserving their pre-trained knowledge,…

Computer Vision and Pattern Recognition · Computer Science 2024-12-10 Yong Xien Chng , Xuchong Qiu , Yizeng Han , Kai Ding , Wan Ding , Gao Huang

Referring audio-visual segmentation (RAVS) has recently seen significant advancements, yet challenges remain in integrating multimodal information and deeply understanding and reasoning about audiovisual content. To extend the boundaries of…

Computer Vision and Pattern Recognition · Computer Science 2025-08-01 Kaining Ying , Henghui Ding , Guangquan Jie , Yu-Gang Jiang

We present lazy visual grounding, a two-stage approach of unsupervised object mask discovery followed by object grounding, for open-vocabulary semantic segmentation. Plenty of the previous art casts this task as pixel-to-text classification…

Computer Vision and Pattern Recognition · Computer Science 2024-08-12 Dahyun Kang , Minsu Cho

When trained at a sufficient scale, self-supervised learning has exhibited a notable ability to solve a wide range of visual or language understanding tasks. In this paper, we investigate simple, yet effective approaches for adapting the…

Computer Vision and Pattern Recognition · Computer Science 2022-10-28 Chaofan Ma , Yuhuan Yang , Yanfeng Wang , Ya Zhang , Weidi Xie

Large Vision-Language Models (VLMs) are increasingly being regarded as foundation models that can be instructed to solve diverse tasks by prompting, without task-specific training. We examine the seemingly obvious question: how to…

Computer Vision and Pattern Recognition · Computer Science 2026-02-09 Niccolo Avogaro , Thomas Frick , Mattia Rigotti , Andrea Bartezzaghi , Filip Janicki , Cristiano Malossi , Konrad Schindler , Roy Assaf

Open-vocabulary 3D visual grounding and reasoning aim to localize objects in a scene based on implicit language descriptions, even when they are occluded. This ability is crucial for tasks such as vision-language navigation and autonomous…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Zhenyang Liu , Yikai Wang , Sixiao Zheng , Tongying Pan , Longfei Liang , Yanwei Fu , Xiangyang Xue

Object detection has been expanded from a limited number of categories to open vocabulary. Moving forward, a complete intelligent vision system requires understanding more fine-grained object descriptions, object parts. In this paper, we…

Computer Vision and Pattern Recognition · Computer Science 2023-05-19 Peize Sun , Shoufa Chen , Chenchen Zhu , Fanyi Xiao , Ping Luo , Saining Xie , Zhicheng Yan

Pre-trained vision-language models (VLMs) learn to align vision and language representations on large-scale datasets, where each image-text pair usually contains a bag of semantic concepts. However, existing open-vocabulary object detectors…

Computer Vision and Pattern Recognition · Computer Science 2023-02-28 Size Wu , Wenwei Zhang , Sheng Jin , Wentao Liu , Chen Change Loy

Open-Vocabulary semantic segmentation (OVSS) and domain generalization in semantic segmentation (DGSS) highlight a subtle complementarity that motivates Open-Vocabulary Domain-Generalized Semantic Segmentation (OV-DGSS). OV-DGSS aims to…

Computer Vision and Pattern Recognition · Computer Science 2025-12-12 Siyu Chen , Ting Han , Chengzheng Fu , Changshe Zhang , Chaolei Wang , Jinhe Su , Guorong Cai , Meiliu Wu

This paper studies the problem of weakly open-vocabulary semantic segmentation (WOVSS), which learns to segment objects of arbitrary classes using mere image-text pairs. Existing works turn to enhance the vanilla vision transformer by…

Computer Vision and Pattern Recognition · Computer Science 2023-10-31 Fei Zhang , Tianfei Zhou , Boyang Li , Hao He , Chaofan Ma , Tianjiao Zhang , Jiangchao Yao , Ya Zhang , Yanfeng Wang

Reasoning segmentation requires models to ground complex, implicit textual queries into precise pixel-level masks. Existing approaches rely on a single segmentation token $\texttt{<SEG>}$, whose hidden state implicitly encodes both semantic…

Computer Vision and Pattern Recognition · Computer Science 2026-04-23 Rui Qian , Chuanhang Deng , Qiang Huang , Jian Xiong , Mingxuan Li , Yingbo Zhou , Wei Zhai , Jintao Chen , Dejing Dou

Reasoning Video Object Segmentation (ReasonVOS) is a challenging task that requires stable object segmentation across video sequences using implicit and complex textual inputs. Previous methods fine-tune Multimodal Large Language Models…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Zhengtong Zhu , Jiaqing Fan , Zhixuan Liu , Fanzhang Li

Visual relationship understanding has been studied separately in human-object interaction(HOI) detection, scene graph generation(SGG), and referring relationships(RR) tasks. Given the complexity and interconnectedness of these tasks, it is…

Computer Vision and Pattern Recognition · Computer Science 2024-08-16 Fangrui Zhu , Jianwei Yang , Huaizu Jiang

The goal of this paper is to extract the visual-language correspondence from a pre-trained text-to-image diffusion model, in the form of segmentation map, i.e., simultaneously generating images and segmentation masks for the corresponding…

Computer Vision and Pattern Recognition · Computer Science 2023-08-11 Ziyi Li , Qinye Zhou , Xiaoyun Zhang , Ya Zhang , Yanfeng Wang , Weidi Xie

Referring Audio-Visual Segmentation (Ref-AVS) aims to segment target objects in audible videos based on given reference expressions. Prior works typically rely on learning latent embeddings via multimodal fusion to prompt a tunable SAM/SAM2…

Multimedia · Computer Science 2025-08-07 Jinxing Zhou , Yanghao Zhou , Mingfei Han , Tong Wang , Xiaojun Chang , Hisham Cholakkal , Rao Muhammad Anwer

The recent years have witnessed the remarkable development for open-vocabulary semantic segmentation (OVSS) using visual-language foundation models, yet still suffer from following fundamental challenges: (1) insufficient cross-modal…

Computer Vision and Pattern Recognition · Computer Science 2026-03-17 Jing Wang , Huimin Shi , Quan Zhou , Qibo Liu , Suofei Zhang , Huimin Lu

Open-vocabulary 3D segmentation enables exploration of 3D spaces using free-form text descriptions. Existing methods for open-vocabulary 3D instance segmentation primarily focus on identifying object-level instances but struggle with…

Computer Vision and Pattern Recognition · Computer Science 2025-01-23 Ayca Takmaz , Alexandros Delitzas , Robert W. Sumner , Francis Engelmann , Johanna Wald , Federico Tombari