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We consider the problem of referring segmentation in images and videos with natural language. Given an input image (or video) and a referring expression, the goal is to segment the entity referred by the expression in the image or video. In…

Computer Vision and Pattern Recognition · Computer Science 2021-02-10 Linwei Ye , Mrigank Rochan , Zhi Liu , Xiaoqin Zhang , Yang Wang

Point cloud sequences are commonly used to accurately detect 3D objects in applications such as autonomous driving. Current top-performing multi-frame detectors mostly follow a Detect-and-Fuse framework, which extracts features from each…

Computer Vision and Pattern Recognition · Computer Science 2023-03-16 Chenhang He , Ruihuang Li , Yabin Zhang , Shuai Li , Lei Zhang

Referring Image Segmentation (RIS) is a task that segments image regions based on language expressions, requiring fine-grained alignment between two modalities. However, existing methods often struggle with multimodal misalignment and…

Computer Vision and Pattern Recognition · Computer Science 2025-09-17 Qianqi Lu , Yuxiang Xie , Jing Zhang , Shiwei Zou , Yan Chen , Xidao Luan

We tackle the problem of object-centric learning on point clouds, which is crucial for high-level relational reasoning and scalable machine intelligence. In particular, we introduce a framework, SPAIR3D, to factorize a 3D point cloud into a…

Computer Vision and Pattern Recognition · Computer Science 2022-07-19 Tianyu Wang , Miaomiao Liu , Kee Siong Ng

The spatial attention is a straightforward approach to enhance the performance for remote sensing image captioning. However, conventional spatial attention approaches consider only the attention distribution on one fixed coarse grid,…

Computer Vision and Pattern Recognition · Computer Science 2021-05-12 Chengze Wang , Zhiyu Jiang , Yuan Yuan

Recent image segmentation models have advanced to segment images into high-quality masks for visual entities, and yet they cannot provide comprehensive semantic understanding for complex queries based on both language and vision. This…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Shengcao Cao , Zijun Wei , Jason Kuen , Kangning Liu , Lingzhi Zhang , Jiuxiang Gu , HyunJoon Jung , Liang-Yan Gui , Yu-Xiong Wang

3D Referring Expression Segmentation (3D-RES) aims to segment 3D objects by correlating referring expressions with point clouds. However, traditional approaches frequently encounter issues like over-segmentation or mis-segmentation, due to…

Computer Vision and Pattern Recognition · Computer Science 2024-12-24 Changli Wu , Qi Chen , Jiayi Ji , Haowei Wang , Yiwei Ma , You Huang , Gen Luo , Hao Fei , Xiaoshuai Sun , Rongrong Ji

While image dehazing has advanced substantially in the past decade, most efforts have focused on short-range scenarios, leaving long-range haze removal under-explored. As distance increases, intensified scattering leads to severe haze and…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Yi Li , Xiaoxiong Wang , Jiawei Wang , Yi Chang , Kai Cao , Luxin Yan

Leveraging multi-modal fusion, especially between camera and LiDAR, has become essential for building accurate and robust 3D object detection systems for autonomous vehicles. Until recently, point decorating approaches, in which point…

Computer Vision and Pattern Recognition · Computer Science 2023-04-28 Philip Jacobson , Yiyang Zhou , Wei Zhan , Masayoshi Tomizuka , Ming C. Wu

Cross-Domain Sequential Recommendation (CDSR) predicts user behavior by leveraging historical interactions across multiple domains, focusing on modeling cross-domain preferences through intra- and inter-sequence item relationships. Inspired…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Wangyu Wu , Zhenhong Chen , Siqi Song , Xianglin Qiu , Xiaowei Huang , Fei Ma , Jimin Xiao

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

Image segmentation is a fundamental task in computer vision, aimed at partitioning an image into semantically meaningful regions. Referring image segmentation extends this task by using natural language expressions to localize specific…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Alaa Dalaq , Muzammil Behzad

3D visual grounding (3DVG), which aims to correlate a natural language description with the target object within a 3D scene, is a significant yet challenging task. Despite recent advancements in this domain, existing approaches commonly…

Computer Vision and Pattern Recognition · Computer Science 2025-01-17 Xinyi Wang , Na Zhao , Zhiyuan Han , Dan Guo , Xun Yang

The 3D scene understanding is mainly considered as a crucial requirement in computer vision and robotics applications. One of the high-level tasks in 3D scene understanding is semantic segmentation of RGB-Depth images. With the availability…

Computer Vision and Pattern Recognition · Computer Science 2019-12-30 Fahimeh Fooladgar , Shohreh Kasaei

Semantic segmentation in complex scenes relies not only on object appearance but also on object location and the surrounding environment. Nonetheless, it is difficult to model long-range context in the format of pairwise point correlations…

Computer Vision and Pattern Recognition · Computer Science 2024-01-18 Xin Kang , Chaoqun Wang , Xuejin Chen

Both local details and global context are crucial in medical image segmentation, and effectively integrating them is essential for achieving high accuracy. However, existing mainstream methods based on CNN-Transformer hybrid architectures…

Computer Vision and Pattern Recognition · Computer Science 2025-09-29 Dayu Tan , Zhenpeng Xu , Yansen Su , Xin Peng , Chunhou Zheng , Weimin Zhong

Inferring 3D structure of a generic object from a 2D image is a long-standing objective of computer vision. Conventional approaches either learn completely from CAD-generated synthetic data, which have difficulty in inference from real…

Computer Vision and Pattern Recognition · Computer Science 2021-04-05 Feng Liu , Luan Tran , Xiaoming Liu

Multi-modality image fusion aims at fusing modality-specific (complementarity) and modality-shared (correlation) information from multiple source images. To tackle the problem of the neglect of inter-feature relationships, high-frequency…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Xiaoli Zhang , Liying Wang , Libo Zhao , Xiongfei Li , Siwei Ma

Existing open-vocabulary 3D semantic segmentation methods typically supervise 3D segmentation models by merging text-aligned features (e.g., CLIP) extracted from multi-view images onto 3D points. However, such approaches treat multi-view…

Computer Vision and Pattern Recognition · Computer Science 2025-07-01 Shiqi Zhang , Sha Zhang , Jiajun Deng , Yedong Shen , Mingxiao MA , Yanyong Zhang

Injecting semantics into 3D Gaussian Splatting (3DGS) has recently garnered significant attention. While current approaches typically distill 3D semantic features from 2D foundational models (e.g., CLIP and SAM) to facilitate novel view…

Computer Vision and Pattern Recognition · Computer Science 2025-05-20 Wenbo Zhang , Lu Zhang , Ping Hu , Liqian Ma , Yunzhi Zhuge , Huchuan Lu