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Vision and Language Models (VLMs), such as CLIP, have enabled visual recognition of a potentially unlimited set of categories described by text prompts. However, for the best visual recognition performance, these models still require tuning…

Computer Vision and Pattern Recognition · Computer Science 2023-09-14 M. Jehanzeb Mirza , Leonid Karlinsky , Wei Lin , Horst Possegger , Rogerio Feris , Horst Bischof

Vision-language models (VLMs) excel in zero-shot recognition but their performance varies greatly across different visual concepts. For example, although CLIP achieves impressive accuracy on ImageNet (60-80%), its performance drops below…

Computer Vision and Pattern Recognition · Computer Science 2024-05-24 Shubham Parashar , Zhiqiu Lin , Tian Liu , Xiangjue Dong , Yanan Li , Deva Ramanan , James Caverlee , Shu Kong

Vision-language models like CLIP have shown impressive capabilities in aligning images and text, but they often struggle with lengthy and detailed text descriptions because of their training focus on short and concise captions. We present…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Hyungyu Choi , Young Kyun Jang , Chanho Eom

Recent vision-language models (VLMs) such as CLIP demonstrate impressive cross-modal reasoning, extending beyond images to 3D perception. Yet, these models remain fragile under domain shifts, especially when adapting from synthetic to…

Computer Vision and Pattern Recognition · Computer Science 2026-04-22 Mainak Singha , Sarthak Mehrotra , Paolo Casari , Subhasis Chaudhuri , Elisa Ricci , Biplab Banerjee

Pre-trained vision-language models like CLIP have shown powerful zero-shot inference ability via image-text matching and prove to be strong few-shot learners in various downstream tasks. However, in real-world scenarios, adapting CLIP to…

Computer Vision and Pattern Recognition · Computer Science 2024-06-19 Jiang-Xin Shi , Chi Zhang , Tong Wei , Yu-Feng Li

Contrastive language-image pretraining (CLIP) links vision and language modalities into a unified embedding space, yielding the tremendous potential for vision-language (VL) tasks. While early concurrent works have begun to study this…

Computer Vision and Pattern Recognition · Computer Science 2023-01-02 Zhecan Wang , Noel Codella , Yen-Chun Chen , Luowei Zhou , Jianwei Yang , Xiyang Dai , Bin Xiao , Haoxuan You , Shih-Fu Chang , Lu Yuan

Long-tailed multi-label visual recognition poses a significant challenge, as images typically contain multiple labels with highly imbalanced class distributions, leading to biased models that favor head classes while underperforming on tail…

Computer Vision and Pattern Recognition · Computer Science 2025-11-26 Wei Tang , Zuo-Zheng Wang , Kun Zhang , Tong Wei , Min-Ling Zhang

Few-shot video action recognition is an effective approach to recognizing new categories with only a few labeled examples, thereby reducing the challenges associated with collecting and annotating large-scale video datasets. Existing…

Computer Vision and Pattern Recognition · Computer Science 2023-09-18 Sarinda Samarasinghe , Mamshad Nayeem Rizve , Navid Kardan , Mubarak Shah

Unsupervised adaptation of CLIP-based vision-language models (VLMs) for fine-grained image classification requires sensitivity to microscopic local cues. While CLIP exhibits strong zero-shot transfer, its reliance on coarse global features…

Computer Vision and Pattern Recognition · Computer Science 2025-10-03 Sathira Silva , Eman Ali , Chetan Arora , Muhammad Haris Khan

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

Source-Free Cross-Domain Few-Shot Learning (SF-CDFSL) focuses on fine-tuning with limited training data from target domains (e.g., medical or satellite images), where CLIP has recently shown promising results due to its generalizability to…

Artificial Intelligence · Computer Science 2026-03-06 Zhenyu Zhang , Guangyao Chen , Yixiong Zou , Yuhua Li , Ruixuan Li

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

Vision-language models (VLMs) like CLIP are trained with the objective of aligning text and image pairs. To improve CLIP-based few-shot image classification, recent works have observed that, along with text embeddings, image embeddings from…

Computer Vision and Pattern Recognition · Computer Science 2026-03-26 Dipam Goswami , Simone Magistri , Gido M. van de Ven , Bartłomiej Twardowski , Andrew D. Bagdanov , Tinne Tuytelaars , Joost van de Weijer

Vision-Language Models (VLMs), such as CLIP, have achieved significant zero-shot performance on downstream tasks with various fine-tuning adaptation methods. However, recent studies have proven that adversarial attacks can significantly…

Computer Vision and Pattern Recognition · Computer Science 2026-05-20 Jia-Wei Hai , Yijun Wang , Xiu-Shen Wei

Applying large-scale vision-language pre-trained models like CLIP to few-shot action recognition (FSAR) can significantly enhance both performance and efficiency. While several studies have recognized this advantage, most of them resort to…

Computer Vision and Pattern Recognition · Computer Science 2024-10-07 Jiazheng Xing , Chao Xu , Mengmeng Wang , Guang Dai , Baigui Sun , Yong Liu , Jingdong Wang , Jian Zhao

Vision-language models (VLMs) like CLIP have shown impressive zero-shot and few-shot learning capabilities across diverse applications. However, adapting these models to new fine-grained domains remains difficult due to reliance on prompt…

Computer Vision and Pattern Recognition · Computer Science 2026-04-23 Taha Koleilat , Hassan Rivaz , Yiming Xiao

Although deep learning models have shown impressive performance on supervised learning tasks, they often struggle to generalize well when the training (source) and test (target) domains differ. Unsupervised domain adaptation (DA) has…

Computer Vision and Pattern Recognition · Computer Science 2024-09-17 Mainak Singha , Harsh Pal , Ankit Jha , Biplab Banerjee

Recent adaptations can boost the low-shot capability of Contrastive Vision-Language Pre-training (CLIP) by effectively facilitating knowledge transfer. However, these adaptation methods are usually operated on the global view of an input…

Computer Vision and Pattern Recognition · Computer Science 2024-07-22 Jinda Lu , Shuo Wang , Yanbin Hao , Haifeng Liu , Xiang Wang , Meng Wang

Vision-Language Models (VLMs) such as CLIP enable strong zero-shot recognition but suffer substantial degradation under distribution shifts. Test-Time Adaptation (TTA) aims to improve robustness using only unlabeled test samples, yet most…

Computer Vision and Pattern Recognition · Computer Science 2026-02-10 Sanggeon Yun , Ryozo Masukawa , SungHeon Jeong , Wenjun Huang , Hanning Chen , Mohsen Imani

Finetuning image-text models such as CLIP achieves state-of-the-art accuracies on a variety of benchmarks. However, recent works like WiseFT (Wortsman et al., 2021) and LP-FT (Kumar et al., 2022) have shown that even subtle differences in…

Computer Vision and Pattern Recognition · Computer Science 2022-12-02 Sachin Goyal , Ananya Kumar , Sankalp Garg , Zico Kolter , Aditi Raghunathan