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To bridge the gap between supervised semantic segmentation and real-world applications that acquires one model to recognize arbitrary new concepts, recent zero-shot segmentation attracts a lot of attention by exploring the relationships…

计算机视觉与模式识别 · 计算机科学 2022-11-01 Quande Liu , Youpeng Wen , Jianhua Han , Chunjing Xu , Hang Xu , Xiaodan Liang

Recently, the contrastive language-image pre-training, e.g., CLIP, has demonstrated promising results on various downstream tasks. The pre-trained model can capture enriched visual concepts for images by learning from a large scale of…

计算机视觉与模式识别 · 计算机科学 2023-06-21 Huaishao Luo , Junwei Bao , Youzheng Wu , Xiaodong He , Tianrui Li

While Contrastive Language-Image Pre-training (CLIP) has advanced open-vocabulary predictions, its performance on semantic segmentation remains suboptimal. This shortfall primarily stems from its spatial-invariant semantic features and…

计算机视觉与模式识别 · 计算机科学 2024-11-15 Yuheng Shi , Minjing Dong , Chang Xu

Existing open-vocabulary object detectors typically enlarge their vocabulary sizes by leveraging different forms of weak supervision. This helps generalize to novel objects at inference. Two popular forms of weak-supervision used in…

计算机视觉与模式识别 · 计算机科学 2022-11-30 Hanoona Rasheed , Muhammad Maaz , Muhammad Uzair Khattak , Salman Khan , Fahad Shahbaz Khan

Semantic segmentation is a crucial task in computer vision that involves segmenting images into semantically meaningful regions at the pixel level. However, existing approaches often rely on expensive human annotations as supervision for…

计算机视觉与模式识别 · 计算机科学 2023-06-02 Jun Chen , Deyao Zhu , Guocheng Qian , Bernard Ghanem , Zhicheng Yan , Chenchen Zhu , Fanyi Xiao , Mohamed Elhoseiny , Sean Chang Culatana

Open-vocabulary semantic segmentation (OVSS) extends traditional closed-set segmentation by enabling pixel-wise annotation for both seen and unseen categories using arbitrary textual descriptions. While existing methods leverage…

计算机视觉与模式识别 · 计算机科学 2026-02-13 Junyang Chen , Xiangbo Lv , Zhiqiang Kou , Xingdong Sheng , Ning Xu , Yiguo Qiao

In this paper, we consider the problem of open-vocabulary semantic segmentation (OVS), which aims to segment objects of arbitrary classes instead of pre-defined, closed-set categories. The main contributions are as follows: First, we…

计算机视觉与模式识别 · 计算机科学 2023-03-06 Jilan Xu , Junlin Hou , Yuejie Zhang , Rui Feng , Yi Wang , Yu Qiao , Weidi Xie

This paper studies open-vocabulary segmentation (OVS) through calibrating in-vocabulary and domain-biased embedding space with generalized contextual prior of CLIP. As the core of open-vocabulary understanding, alignment of visual content…

计算机视觉与模式识别 · 计算机科学 2024-11-27 Yong Liu , Sule Bai , Guanbin Li , Yitong Wang , Yansong Tang

Recently, the emergence of the large-scale vision-language model (VLM), such as CLIP, has opened the way towards open-world object perception. Many works have explored the utilization of pre-trained VLM for the challenging open-vocabulary…

计算机视觉与模式识别 · 计算机科学 2024-07-08 Youwei Pang , Xiaoqi Zhao , Jiaming Zuo , Lihe Zhang , Huchuan Lu

Open-vocabulary semantic segmentation (OVSS) employs pixel-level vision-language alignment to associate category-related prompts with corresponding pixels. A key challenge is enhancing the multimodal dense prediction capability,…

计算机视觉与模式识别 · 计算机科学 2025-11-21 Jiahao Li , Yang Lu , Yachao Zhang , Yong Xie , Fangyong Wang , Yuan Xie , Yanyun Qu

This paper presents a new method for the zero-shot open-vocabulary semantic segmentation (OVSS) of 3D automotive lidar data. To circumvent the recognized image-text modality gap that is intrinsic to approaches based on Vision Language…

计算机视觉与模式识别 · 计算机科学 2026-04-03 Nermin Samet , Gilles Puy , Renaud Marlet

Training-free open-vocabulary semantic segmentation(TF-OVSS) has recently attracted attention for its ability to perform dense prediction by leveraging the pretrained knowledge of large vision and vision-language models, without requiring…

计算机视觉与模式识别 · 计算机科学 2026-04-13 Seungjae Moon , Seunghyun Oh , Youngmin Ro

Zero-shot classification capabilities naturally arise in models trained within a vision-language contrastive framework. Despite their classification prowess, these models struggle in dense tasks like zero-shot open-vocabulary segmentation.…

计算机视觉与模式识别 · 计算机科学 2025-10-16 Thomas Stegmüller , Tim Lebailly , Nikola Dukic , Behzad Bozorgtabar , Tinne Tuytelaars , Jean-Philippe Thiran

Existing open-vocabulary object detection (OVD) develops methods for testing unseen categories by aligning object region embeddings with corresponding VLM features. A recent study leverages the idea that VLMs implicitly learn compositional…

计算机视觉与模式识别 · 计算机科学 2024-12-25 Hojun Choi , Junsuk Choe , Hyunjung Shim

Open-vocabulary semantic segmentation is a challenging task, which requires the model to output semantic masks of an image beyond a close-set vocabulary. Although many efforts have been made to utilize powerful CLIP models to accomplish…

计算机视觉与模式识别 · 计算机科学 2024-06-17 Xiangheng Shan , Dongyue Wu , Guilin Zhu , Yuanjie Shao , Nong Sang , Changxin Gao

Open-vocabulary image segmentation is attracting increasing attention due to its critical applications in the real world. Traditional closed-vocabulary segmentation methods are not able to characterize novel objects, whereas several recent…

计算机视觉与模式识别 · 计算机科学 2023-07-18 Xi Chen , Shuang Li , Ser-Nam Lim , Antonio Torralba , Hengshuang Zhao

Recent works modify CLIP to perform open-vocabulary semantic segmentation in a training-free manner (TF-OVSS). In vanilla CLIP, patch-wise image representations mainly encode homogeneous image-level properties, which hinders the application…

机器学习 · 计算机科学 2026-05-12 Jingyun Wang , Cilin Yan , Guoliang Kang

It is widely agreed that open-vocabulary-based approaches outperform classical closed-set training solutions for recognizing unseen objects in images for semantic segmentation. Existing open-vocabulary approaches leverage vision-language…

计算机视觉与模式识别 · 计算机科学 2026-02-19 Huadong Tang , Youpeng Zhao , Yan Huang , Min Xu , Jun Wang , Qiang Wu

Training-free open-vocabulary semantic segmentation (OVS) aims to segment images given a set of arbitrary textual categories without costly model fine-tuning. Existing solutions often explore attention mechanisms of pre-trained models, such…

计算机视觉与模式识别 · 计算机科学 2025-06-30 Xiwei Xuan , Ziquan Deng , Kwan-Liu Ma

Existing open-vocabulary image segmentation methods require a fine-tuning step on mask labels and/or image-text datasets. Mask labels are labor-intensive, which limits the number of categories in segmentation datasets. Consequently, the…

计算机视觉与模式识别 · 计算机科学 2024-05-08 Shuyang Sun , Runjia Li , Philip Torr , Xiuye Gu , Siyang Li