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In this paper, we investigate Open-Vocabulary 3D Instance Segmentation (OV-3DIS) with free-form language instructions. Earlier works that rely on only annotated base categories for training suffer from limited generalization to unseen novel…

Computer Vision and Pattern Recognition · Computer Science 2024-04-03 Seungjun Lee , Yuyang Zhao , Gim Hee Lee

We propose Segment Any Mesh, a novel zero-shot mesh part segmentation method that overcomes the limitations of shape analysis-based, learning-based, and contemporary approaches. Our approach operates in two phases: multimodal rendering and…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 George Tang , William Zhao , Logan Ford , David Benhaim , Paul Zhang

This technical report introduces the winning solution of the team Segment Any Anomaly for the CVPR2023 Visual Anomaly and Novelty Detection (VAND) challenge. Going beyond uni-modal prompt, e.g., language prompt, we present a novel…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Yunkang Cao , Xiaohao Xu , Chen Sun , Yuqi Cheng , Liang Gao , Weiming Shen

Image segmentation is the problem of partitioning an image into different subsets, where each subset may have a different characterization in terms of color, intensity, texture, and/or other features. Segmentation is a fundamental component…

Computer Vision and Pattern Recognition · Computer Science 2015-11-03 M. Abdelsamea

Multimodal Large Language Models (MLLMs) have demonstrated strong image-level visual understanding and reasoning, yet their pixel-level perception across both images and videos remains limited. Foundation segmentation models such as the SAM…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Hao Wang , Limeng Qiao , Chi Zhang , Lin Ma , Guanglu Wan , Xiangyuan Lan , Xiaodan Liang

Handling occlusion remains a significant challenge for video instance-level tasks like Multiple Object Tracking (MOT) and Video Instance Segmentation (VIS). In this paper, we propose a novel framework, Amodal-Aware Video Instance…

Computer Vision and Pattern Recognition · Computer Science 2025-04-11 Minh Tran , Thang Pham , Winston Bounsavy , Tri Nguyen , Ngan Le

Obtaining precise instance segmentation masks is of high importance in many modern applications such as robotic manipulation and autonomous driving. Currently, many state of the art models are based on the Mask R-CNN framework which, while…

Computer Vision and Pattern Recognition · Computer Science 2020-07-31 Namdar Homayounfar , Yuwen Xiong , Justin Liang , Wei-Chiu Ma , Raquel Urtasun

Recent generalist vision-language models (VLMs) have demonstrated impressive reasoning capabilities across diverse multimodal tasks. However, these models still struggle with fine-grained object-level understanding and grounding. In terms…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Timothy Ossowski , Junjie Hu

Weakly supervised semantic segmentation (WSSS) aims to produce pixel-wise class predictions with only image-level labels for training. To this end, previous methods adopt the common pipeline: they generate pseudo masks from class activation…

Computer Vision and Pattern Recognition · Computer Science 2022-08-09 Sungpil Kho , Pilhyeon Lee , Wonyoung Lee , Minsong Ki , Hyeran Byun

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

The recent development of vision language models (VLMs) has led to significant advances in visual-language integration through visual instruction tuning, and they have rapidly evolved in the field of remote sensing image understanding,…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Kaixuan Lu

This paper presents a learning-based, lossless compression method for static point cloud geometry, based on context-adaptive arithmetic coding. Unlike most existing methods working in the octree domain, our encoder operates in a hybrid…

Image and Video Processing · Electrical Eng. & Systems 2021-04-21 Dat Thanh Nguyen , Maurice Quach , Giuseppe Valenzise , Pierre Duhamel

In contrast to fully supervised methods using pixel-wise mask labels, box-supervised instance segmentation takes advantage of simple box annotations, which has recently attracted increasing research attention. This paper presents a novel…

Computer Vision and Pattern Recognition · Computer Science 2022-12-06 Wentong Li , Wenyu Liu , Jianke Zhu , Miaomiao Cui , Risheng Yu , Xiansheng Hua , Lei Zhang

Vision-Language-Action models (VLAs) are emerging as powerful tools for learning generalizable visuomotor control policies. However, current VLAs are mostly trained on large-scale image-text-action data and remain limited in two key ways:…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Wenqi Liang , Gan Sun , Yao He , Jiahua Dong , Suyan Dai , Ivan Laptev , Salman Khan , Yang Cong

Moving object segmentation plays a crucial role in understanding dynamic scenes involving multiple moving objects, while the difficulties lie in taking into account both spatial texture structures and temporal motion cues. Existing methods…

Computer Vision and Pattern Recognition · Computer Science 2025-02-19 Zhexiong Wan , Bin Fan , Le Hui , Yuchao Dai , Gim Hee Lee

Common visual recognition tasks such as classification, object detection, and semantic segmentation are rapidly reaching maturity, and given the recent rate of progress, it is not unreasonable to conjecture that techniques for many of these…

Computer Vision and Pattern Recognition · Computer Science 2016-12-15 Yan Zhu , Yuandong Tian , Dimitris Mexatas , Piotr Dollár

We present a novel algorithm for point cloud segmentation. Our approach transforms unstructured point clouds into regular voxel grids, and further uses a kernel-based interpolated variational autoencoder (VAE) architecture to encode the…

Graphics · Computer Science 2019-08-21 Hsien-Yu Meng , Lin Gao , YuKun Lai , Dinesh Manocha

The ability to segment objects based on open-ended language prompts remains a critical challenge, requiring models to ground textual semantics into precise spatial masks while handling diverse and unseen categories. We present OpenWorldSAM,…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Shiting Xiao , Rishabh Kabra , Yuhang Li , Donghyun Lee , Joao Carreira , Priyadarshini Panda

Vision-language models (VLMs) excel in visual understanding but often lack reliable grounding capabilities and actionable inference rates. Integrating them with open-vocabulary object detection (OVD), instance segmentation, and tracking…

Computer Vision and Pattern Recognition · Computer Science 2025-10-21 Bastian Pätzold , Jan Nogga , Sven Behnke

Accurate detection of objects in 3D point clouds is a central problem in many applications, such as autonomous navigation, housekeeping robots, and augmented/virtual reality. To interface a highly sparse LiDAR point cloud with a region…

Computer Vision and Pattern Recognition · Computer Science 2017-11-20 Yin Zhou , Oncel Tuzel