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Generalizing open-vocabulary 3D instance segmentation (OV-3DIS) to diverse, unstructured, and mesh-free environments is crucial for robotics and AR/VR, yet remains a significant challenge. We attribute this to two key limitations of…

Computer Vision and Pattern Recognition · Computer Science 2026-05-15 Zhishan Zhou , Siyuan Wei , Zengran Wang , Chunjie Wang , Xiaosheng Yan , Xiao Liu

3D part segmentation is a crucial and challenging task in 3D perception, playing a vital role in applications such as robotics, 3D generation, and 3D editing. Recent methods harness the powerful Vision Language Models (VLMs) for 2D-to-3D…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Yunhan Yang , Yukun Huang , Yuan-Chen Guo , Liangjun Lu , Xiaoyang Wu , Edmund Y. Lam , Yan-Pei Cao , Xihui Liu

Video object segmentation (VOS) describes the task of segmenting a set of objects in each frame of a video. In the semi-supervised setting, the first mask of each object is provided at test time. Following the one-shot principle,…

Computer Vision and Pattern Recognition · Computer Science 2020-12-04 Tim Meinhardt , Laura Leal-Taixe

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

We propose LangHOPS, the first Multimodal Large Language Model (MLLM) based framework for open-vocabulary object-part instance segmentation. Given an image, LangHOPS can jointly detect and segment hierarchical object and part instances from…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Yang Miao , Jan-Nico Zaech , Xi Wang , Fabien Despinoy , Danda Pani Paudel , Luc Van Gool

Audio-visual segmentation (AVS) is a challenging task that involves accurately segmenting sounding objects based on audio-visual cues. The effectiveness of audio-visual learning critically depends on achieving accurate cross-modal alignment…

Computer Vision and Pattern Recognition · Computer Science 2024-08-15 Yuanhong Chen , Yuyuan Liu , Hu Wang , Fengbei Liu , Chong Wang , Helen Frazer , Gustavo Carneiro

Remote sensing imagery has attracted significant attention in recent years due to its instrumental role in global environmental monitoring, land usage monitoring, and more. As image databases grow each year, performing automatic…

Computer Vision and Pattern Recognition · Computer Science 2026-01-21 Jielu Zhang , Zhongliang Zhou , Gengchen Mai , Mengxuan Hu , Zihan Guan , Sheng Li , Lan Mu

We introduce the task of open-vocabulary visual instance search (OVIS). Given an arbitrary textual search query, Open-vocabulary Visual Instance Search (OVIS) aims to return a ranked list of visual instances, i.e., image patches, that…

Computer Vision and Pattern Recognition · Computer Science 2021-08-10 Sheng Liu , Kevin Lin , Lijuan Wang , Junsong Yuan , Zicheng Liu

This paper tackles the task of semi-supervised video object segmentation, i.e., the separation of an object from the background in a video, given the mask of the first frame. We present One-Shot Video Object Segmentation (OSVOS), based on a…

Computer Vision and Pattern Recognition · Computer Science 2017-04-14 Sergi Caelles , Kevis-Kokitsi Maninis , Jordi Pont-Tuset , Laura Leal-Taixé , Daniel Cremers , Luc Van Gool

Partially supervised segmentation is a label-saving method based on datasets with fractional classes labeled and intersectant. However, it is still far from landing on real-world medical applications due to privacy concerns and data…

Computer Vision and Pattern Recognition · Computer Science 2023-11-17 Le Jiang , Li Yan Ma , Tie Yong Zeng , Shi Hui Ying

In this paper, we study the problem of semantic part segmentation for animals. This is more challenging than standard object detection, object segmentation and pose estimation tasks because semantic parts of animals often have similar…

Computer Vision and Pattern Recognition · Computer Science 2014-12-22 Jianyu Wang , Alan Yuille

Traditional object detection systems are typically constrained to predefined categories, limiting their applicability in dynamic environments. In contrast, open-vocabulary object detection (OVD) enables the identification of objects from…

Computer Vision and Pattern Recognition · Computer Science 2026-02-03 Tianyi Zhang , Antoine Simoulin , Kai Li , Sana Lakdawala , Shiqing Yu , Arpit Mittal , Hongyu Fu , Yu Lin

We introduce Open3DIS, a novel solution designed to tackle the problem of Open-Vocabulary Instance Segmentation within 3D scenes. Objects within 3D environments exhibit diverse shapes, scales, and colors, making precise instance-level…

Computer Vision and Pattern Recognition · Computer Science 2024-04-09 Phuc D. A. Nguyen , Tuan Duc Ngo , Evangelos Kalogerakis , Chuang Gan , Anh Tran , Cuong Pham , Khoi Nguyen

Recent advancements in multimodal vision models have highlighted limitations in late-stage feature fusion and suboptimal query selection for hybrid prompts open-world segmentation, alongside constraints from caption-derived vocabularies. To…

Computer Vision and Pattern Recognition · Computer Science 2025-08-11 Yuchen Guan , Chong Sun , Canmiao Fu , Zhipeng Huang , Chun Yuan , Chen Li

Recent advancements in 3D reconstruction technologies have paved the way for high-quality and real-time rendering of complex 3D scenes. Despite these achievements, a notable challenge persists: it is difficult to precisely reconstruct…

Computer Vision and Pattern Recognition · Computer Science 2024-08-29 Lizhi Wang , Feng Zhou , Bo yu , Pu Cao , Jianqin Yin

This paper proposes to go beyond the state-of-the-art deep convolutional neural network (CNN) by incorporating the information from object detection, focusing on dealing with fine-grained image classification. Unfortunately, CNN suffers…

Computer Vision and Pattern Recognition · Computer Science 2014-12-11 Xiaoyu Wang , Tianbao Yang , Guobin Chen , Yuanqing Lin

Out-of-distribution (OOD) object detection is a critical task focused on detecting objects that originate from a data distribution different from that of the training data. In this study, we investigate to what extent state-of-the-art…

Computer Vision and Pattern Recognition · Computer Science 2024-08-22 Sadia Ilyas , Ido Freeman , Matthias Rottmann

Open-vocabulary detection is a challenging task due to the requirement of detecting objects based on class names, including those not encountered during training. Existing methods have shown strong zero-shot detection capabilities through…

Computer Vision and Pattern Recognition · Computer Science 2024-07-23 Hao Wang , Pengzhen Ren , Zequn Jie , Xiao Dong , Chengjian Feng , Yinlong Qian , Lin Ma , Dongmei Jiang , Yaowei Wang , Xiangyuan Lan , Xiaodan Liang

Open-vocabulary learning has emerged as a cutting-edge research area, particularly in light of the widespread adoption of vision-based foundational models. Its primary objective is to comprehend novel concepts that are not encompassed…

Computer Vision and Pattern Recognition · Computer Science 2023-10-24 Chunlei Wang , Wenquan Feng , Xiangtai Li , Guangliang Cheng , Shuchang Lyu , Binghao Liu , Lijiang Chen , Qi Zhao

Open-Vocabulary Semantic Segmentation (OVSS) assigns pixel-level labels from an open set of categories, requiring generalization to unseen and unlabelled objects. Using vision-language models (VLMs) to correlate local image patches with…

Computer Vision and Pattern Recognition · Computer Science 2025-10-20 Jiayi Lin , Jiabo Huang , Shaogang Gong