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CLIP and BiomedCLIP are examples of vision-language foundation models and offer strong cross-modal embeddings; however, they are not optimized for fine-grained medical retrieval tasks, such as retrieving clinically relevant radiology…

Computer Vision and Pattern Recognition · Computer Science 2026-01-12 Zhaohui Liang , Sivaramakrishnan Rajaraman , Niccolo Marini , Zhiyun Xue , Sameer Antani

Federated Semi-supervised Learning (FedSSL) has emerged as a new paradigm for allowing distributed clients to collaboratively train a machine learning model over scarce labeled data and abundant unlabeled data. However, existing works for…

Machine Learning · Computer Science 2023-05-02 Jie Zhang , Xiaosong Ma , Song Guo , Wenchao Xu

Vision-language foundation models such as CLIP have shown impressive zero-shot performance on many tasks and datasets, especially thanks to their free-text inputs. However, they struggle to handle some downstream tasks, such as fine-grained…

Computer Vision and Pattern Recognition · Computer Science 2023-07-14 Denis Coquenet , Clément Rambour , Emanuele Dalsasso , Nicolas Thome

Aiming to reconstruct visual stimuli from brain signals, brain decoding has recently made significant progress using functional magnetic resonance imaging (fMRI). However, it still has challenging issues such as substantial individual…

Computer Vision and Pattern Recognition · Computer Science 2025-11-24 Shuai Jiang , Zhu Meng , Haiwen Li , Delong Liu , Fei Su , Zhicheng Zhao

Despite achieving promising results in a breadth of medical image segmentation tasks, deep neural networks require large training datasets with pixel-wise annotations. Obtaining these curated datasets is a cumbersome process which limits…

Image and Video Processing · Electrical Eng. & Systems 2022-11-28 Bingyuan Liu , Christian Desrosiers , Ismail Ben Ayed , Jose Dolz

An old-school recipe for training a classifier is to (i) learn a good feature extractor and (ii) optimize a linear layer atop. When only a handful of samples are available per category, as in Few-Shot Adaptation (FSA), data are insufficient…

Computer Vision and Pattern Recognition · Computer Science 2025-03-17 Matteo Farina , Massimiliano Mancini , Giovanni Iacca , Elisa Ricci

Recent works utilize CLIP to perform the challenging unsupervised semantic segmentation task where only images without annotations are available. However, we observe that when adopting CLIP to such a pixel-level understanding task,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-11 Jingyun Wang , Guoliang Kang

Long-tailed semi-supervised learning (LTSSL) presents a formidable challenge where models must overcome the scarcity of tail samples while mitigating the noise from unreliable pseudo-labels. Most prior LTSSL methods are designed to train…

Machine Learning · Computer Science 2026-04-09 Zhiyuan Huang , Jiahao Chen , Bing Su

Existing cross-domain few-shot learning (CDFSL) methods, which develop source-domain training strategies to enhance model transferability, face challenges with large-scale pre-trained models (LMs) due to inaccessible source data and…

Computer Vision and Pattern Recognition · Computer Science 2025-09-16 Huali Xu , Li Liu , Tianpeng Liu , Shuaifeng Zhi , Shuzhou Sun , Ming-Ming Cheng

We tackle open-world semantic segmentation, which aims at learning to segment arbitrary visual concepts in images, by using only image-text pairs without dense annotations. Existing open-world segmentation methods have shown impressive…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Junbum Cha , Jonghwan Mun , Byungseok Roh

Deep Learning (DL) is undergoing a paradigm shift with the emergence of foundation models. In this work, we focus on Contrastive Language-Image Pre-training (CLIP), a Vision-Language foundation model that achieves high accuracy across…

Computer Vision and Pattern Recognition · Computer Science 2025-07-21 Angelos Zavras , Dimitrios Michail , Begüm Demir , Ioannis Papoutsis

With the growing interest in pretrained vision-language models like CLIP, recent research has focused on adapting these models to downstream tasks. Despite achieving promising results, most existing methods require labeled data for all…

Computer Vision and Pattern Recognition · Computer Science 2023-07-17 Zhengbo Wang , Jian Liang , Ran He , Nan Xu , Zilei Wang , Tieniu Tan

Few-shot learning (FSL), which aims to recognise new classes by adapting the learned knowledge with extremely limited few-shot (support) examples, remains an important open problem in computer vision. Most of the existing methods for…

Computer Vision and Pattern Recognition · Computer Science 2021-03-26 Chengming Xu , Chen Liu , Li Zhang , Chengjie Wang , Jilin Li , Feiyue Huang , Xiangyang Xue , Yanwei Fu

Advancements in cross-modal feature extraction and integration have significantly enhanced performance in few-shot learning tasks. However, current multi-modal object detection (MM-OD) methods often experience notable performance…

Computer Vision and Pattern Recognition · Computer Science 2025-02-25 Zeyu Shangguan , Daniel Seita , Mohammad Rostami

Continual learning (CL) is designed to learn new tasks while preserving existing knowledge. Replaying samples from earlier tasks has proven to be an effective method to mitigate the forgetting of previously acquired knowledge. However, the…

Computer Vision and Pattern Recognition · Computer Science 2024-11-14 Ruiqi Liu , Boyu Diao , Libo Huang , Zijia An , Zhulin An , Yongjun Xu

Contrastive Language-Image Pre-training (CLIP) excels in multimodal tasks such as image-text retrieval and zero-shot classification but struggles with fine-grained understanding due to its focus on coarse-grained short captions. To address…

Computer Vision and Pattern Recognition · Computer Science 2025-05-22 Chunyu Xie , Bin Wang , Fanjing Kong , Jincheng Li , Dawei Liang , Gengshen Zhang , Dawei Leng , Yuhui Yin

Fine-tuning vision-language models (VLMs) like CLIP to downstream tasks is often necessary to optimize their performance. However, a major obstacle is the limited availability of labeled data. We study the use of pseudolabels, i.e.,…

Computer Vision and Pattern Recognition · Computer Science 2024-03-11 Cristina Menghini , Andrew Delworth , Stephen H. Bach

Large pre-trained vision-language models such as CLIP provide compact and general-purpose representations of text and images that are demonstrably effective across multiple downstream zero-shot prediction tasks. However, owing to the nature…

Computer Vision and Pattern Recognition · Computer Science 2024-05-20 Sepehr Dehdashtian , Lan Wang , Vishnu Naresh Boddeti

Recently, Vision-Language Pre-training (VLP) techniques have greatly benefited various vision-language tasks by jointly learning visual and textual representations, which intuitively helps in Optical Character Recognition (OCR) tasks due to…

Computer Vision and Pattern Recognition · Computer Science 2022-11-15 Chuhui Xue , Wenqing Zhang , Yu Hao , Shijian Lu , Philip Torr , Song Bai

As a pioneering vision-language model, CLIP (Contrastive Language-Image Pre-training) has achieved significant success across various domains and a wide range of downstream vision-language tasks. However, the text encoders in popular CLIP…

Computer Vision and Pattern Recognition · Computer Science 2025-04-03 Mothilal Asokan , Kebin Wu , Fatima Albreiki