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Open-vocabulary semantic segmentation requires assigning pixel-level semantic labels while supporting an open and unrestricted set of categories. Training-free CLIP-based approaches preserve strong zero-shot generalization but typically…

Computer Vision and Pattern Recognition · Computer Science 2026-04-29 Mohamad Zamini , Diksha Shukla

As wearable-based data annotation remains, to date, a tedious, time-consuming task requiring researchers to dedicate substantial time, benchmark datasets within the field of Human Activity Recognition in lack richness and size compared to…

Human-Computer Interaction · Computer Science 2024-08-12 Marius Bock , Kristof Van Laerhoven , Michael Moeller

Open-Vocabulary Segmentation (OVS) aims to segment image regions beyond predefined category sets by leveraging semantic descriptions. While CLIP based approaches excel in semantic generalization, they frequently lack the fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2026-04-10 Haoxi Zeng , Qiankun Liu , Yi Bin , Haiyue Zhang , Yujuan Ding , Guoqing Wang , Deqiang Ouyang , Heng Tao Shen

CLIP, as a vision-language model, has significantly advanced Open-Vocabulary Semantic Segmentation (OVSS) with its zero-shot capabilities. Despite its success, its application to OVSS faces challenges due to its initial image-level…

Computer Vision and Pattern Recognition · Computer Science 2024-07-12 Tong Shao , Zhuotao Tian , Hang Zhao , Jingyong Su

Recently, the powerful generalization ability exhibited by foundation models has brought forth new solutions for zero-shot anomaly segmentation tasks. However, guiding these foundation models correctly to address downstream tasks remains a…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Yanning Hou , Ke Xu , Junfa Li , Yanran Ruan , Jianfeng Qiu

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…

Computer Vision and Pattern Recognition · Computer Science 2024-05-08 Shuyang Sun , Runjia Li , Philip Torr , Xiuye Gu , Siyang Li

Instance object segmentation and tracking provide comprehensive quantification of objects across microscope videos. The recent single-stage pixel-embedding based deep learning approach has shown its superior performance compared with…

Image and Video Processing · Electrical Eng. & Systems 2020-11-03 Quan Liu , Isabella M. Gaeta , Mengyang Zhao , Ruining Deng , Aadarsh Jha , Bryan A. Millis , Anita Mahadevan-Jansen , Matthew J. Tyska , Yuankai Huo

The image annotation stage is a critical and often the most time-consuming part required for training and evaluating object detection and semantic segmentation models. Deployment of the existing models in novel environments often requires…

Computer Vision and Pattern Recognition · Computer Science 2023-11-21 Yimeng Li , Navid Rajabi , Sulabh Shrestha , Md Alimoor Reza , Jana Kosecka

Recent open-vocabulary segmentation methods adopt mask generators to predict segmentation masks and leverage pre-trained vision-language models, e.g., CLIP, to classify these masks via mask pooling. Although these approaches show promising…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Yongkang Li , Tianheng Cheng , Bin Feng , Wenyu Liu , Xinggang Wang

Deep learning has significantly improved the precision of instance segmentation with abundant labeled data. However, in many areas like medical and manufacturing, collecting sufficient data is extremely hard and labeling this data requires…

Computer Vision and Pattern Recognition · Computer Science 2021-06-02 Ye Zheng , Jiahong Wu , Yongqiang Qin , Faen Zhang , Li Cui

Recent vision-language foundation models still frequently produce outputs misaligned with their inputs, evidenced by object hallucination in captioning and prompt misalignment in the text-to-image generation model. Recent studies have…

Computer Vision and Pattern Recognition · Computer Science 2024-12-25 JeongYeon Nam , Jinbae Im , Wonjae Kim , Taeho Kil

Extending CLIP models to semantic segmentation remains challenging due to the misalignment between their image-level pre-training objectives and the pixel-level visual understanding required for dense prediction. While prior efforts have…

Computer Vision and Pattern Recognition · Computer Science 2025-10-29 Jinxin Zhou , Jiachen Jiang , Zhihui Zhu

Vision Foundation Model (VFM) such as the Segment Anything Model (SAM) and Contrastive Language-Image Pre-training Model (CLIP) has shown promising performance for segmentation and detection tasks. However, although SAM excels in…

Computer Vision and Pattern Recognition · Computer Science 2025-03-31 Kunliang Liu , Jianming Wang , Rize Jin , Wonjun Hwang , Tae-Sun Chung

Dense visual perception tasks have been constrained by their reliance on predefined categories, limiting their applicability in real-world scenarios where visual concepts are unbounded. While Vision-Language Models (VLMs) like CLIP have…

Computer Vision and Pattern Recognition · Computer Science 2025-08-18 Junjie Wang , Keyu Chen , Yulin Li , Bin Chen , Hengshuang Zhao , Xiaojuan Qi , Zhuotao Tian

Semantic segmentation is a fundamental task in medical image analysis and autonomous driving and has a problem with the high cost of annotating the labels required in training. To address this problem, semantic segmentation methods based on…

Computer Vision and Pattern Recognition · Computer Science 2025-05-30 Nagito Saito , Shintaro Ito , Koichi Ito , Takafumi Aoki

This paper tackles the problem of object counting in images. Existing approaches rely on extensive training data with point annotations for each object, making data collection labor-intensive and time-consuming. To overcome this, we propose…

Computer Vision and Pattern Recognition · Computer Science 2023-09-01 Zenglin Shi , Ying Sun , Mengmi Zhang

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…

Computer Vision and Pattern Recognition · Computer Science 2023-06-21 Huaishao Luo , Junwei Bao , Youzheng Wu , Xiaodong He , Tianrui Li

Promptable foundation models such as the Segment Anything Model (SAM) produce high-quality masks but remain semantically blind, relying on external prompts to specify categories. Existing vision-language approaches address this limitation…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Shayan Jalilian , Abdul Bais

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…

Computer Vision and Pattern Recognition · Computer Science 2023-06-02 Jun Chen , Deyao Zhu , Guocheng Qian , Bernard Ghanem , Zhicheng Yan , Chenchen Zhu , Fanyi Xiao , Mohamed Elhoseiny , Sean Chang Culatana

Instance segmentation methods require large datasets with expensive and thus limited instance-level mask labels. Partially supervised instance segmentation aims to improve mask prediction with limited mask labels by utilizing the more…

Computer Vision and Pattern Recognition · Computer Science 2021-04-13 David Biertimpel , Sindi Shkodrani , Anil S. Baslamisli , Nóra Baka