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Vision-Language Models (VLMs) show promise as zero-shot goal-conditioned value functions, but their frozen pre-trained representations limit generalization and temporal reasoning. We introduce VITA, a zero-shot value function learning…

Computer Vision and Pattern Recognition · Computer Science 2026-03-03 Christos Ziakas , Alessandra Russo

Vision-language object detectors (VLODs) such as YOLO-World and Grounding DINO exhibit strong zero-shot generalization, but their performance degrades under distribution shift. Test-time adaptation (TTA) offers a practical way to adapt…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Atif Belal , Heitor R. Medeiros , Marco Pedersoli , Eric Granger

Open-world object counting leverages the robust text-image alignment of pre-trained vision-language models (VLMs) to enable counting of arbitrary categories in images specified by textual queries. However, widely adopted naive fine-tuning…

Computer Vision and Pattern Recognition · Computer Science 2025-04-25 Yiming Zhao , Guorong Li , Laiyun Qing , Amin Beheshti , Jian Yang , Michael Sheng , Yuankai Qi , Qingming Huang

Pretrained vision-language models (VLMs) like CLIP show strong zero-shot performance but struggle with generalization under distribution shifts. Test-Time Adaptation (TTA) addresses this by adapting VLMs to unlabeled test data in new…

Computer Vision and Pattern Recognition · Computer Science 2025-08-11 Hamidreza Dastmalchi , Aijun An , Ali cheraghian

Visual Prompt Tuning (VPT) has become a promising solution for Parameter-Efficient Fine-Tuning (PEFT) approach for Vision Transformer (ViT) models by partially fine-tuning learnable tokens while keeping most model parameters frozen. Recent…

Computer Vision and Pattern Recognition · Computer Science 2025-06-03 Li Ren , Chen Chen , Liqiang Wang , Kien Hua

Temporal Video Grounding (TVG), which requires pinpointing relevant temporal segments from video based on language query, has always been a highly challenging task in the field of video understanding. Videos often have a larger volume of…

Computer Vision and Pattern Recognition · Computer Science 2025-07-08 Feng Yue , Zhaoxing Zhang , Junming Jiao , Zhengyu Liang , Shiwen Cao , Feifei Zhang , Rong Shen

The promising zero-shot generalization of vision-language models such as CLIP has led to their adoption using prompt learning for numerous downstream tasks. Previous works have shown test-time prompt tuning using entropy minimization to…

Computer Vision and Pattern Recognition · Computer Science 2024-01-12 Jameel Hassan , Hanan Gani , Noor Hussein , Muhammad Uzair Khattak , Muzammal Naseer , Fahad Shahbaz Khan , Salman Khan

Pre-trained vision-language models (VLMs) have shown impressive performance on various downstream tasks by utilizing knowledge learned from large data. In general, the performance of VLMs on target tasks can be further improved by prompt…

Computer Vision and Pattern Recognition · Computer Science 2023-09-08 Eulrang Cho , Jooyeon Kim , Hyunwoo J. Kim

The zero-shot capabilities of Vision-Language Models (VLMs) have been widely leveraged to improve predictive performance. However, previous works on transductive or test-time adaptation (TTA) often make strong assumptions about the data…

Computer Vision and Pattern Recognition · Computer Science 2025-01-08 Maxime Zanella , Clément Fuchs , Christophe De Vleeschouwer , Ismail Ben Ayed

Recently, test-time adaptation has attracted wide interest in the context of vision-language models for image classification. However, to the best of our knowledge, the problem is completely overlooked in dense prediction tasks such as…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Mehrdad Noori , David Osowiechi , Gustavo Adolfo Vargas Hakim , Ali Bahri , Moslem Yazdanpanah , Sahar Dastani , Farzad Beizaee , Ismail Ben Ayed , Christian Desrosiers

Pre-trained vision-language models (VLMs) have shown remarkable generalization capabilities via prompting, which leverages VLMs as knowledge bases to extract information beneficial for downstream tasks. However, existing methods primarily…

Computer Vision and Pattern Recognition · Computer Science 2024-04-25 Xiaoyu Qiu , Hao Feng , Yuechen Wang , Wengang Zhou , Houqiang Li

Test-time prompt tuning (TPT) has emerged as a promising technique for adapting large vision-language models (VLMs) to unseen tasks without relying on labeled data. However, the lack of dispersion between textual features can hurt…

Computer Vision and Pattern Recognition · Computer Science 2026-01-27 Shihab Aaqil Ahamed , Udaya S. K. P. Miriya Thanthrige , Ranga Rodrigo , Muhammad Haris Khan

Accurate video moment retrieval (VMR) requires universal visual-textual correlations that can handle unknown vocabulary and unseen scenes. However, the learned correlations are likely either biased when derived from a limited amount of…

Computer Vision and Pattern Recognition · Computer Science 2023-09-06 Dezhao Luo , Jiabo Huang , Shaogang Gong , Hailin Jin , Yang Liu

Visual Prompt Tuning (VPT) techniques have gained prominence for their capacity to adapt pre-trained Vision Transformers (ViTs) to downstream visual tasks using specialized learnable tokens termed as prompts. Contemporary VPT methodologies,…

Computer Vision and Pattern Recognition · Computer Science 2024-02-28 Shentong Mo , Yansen Wang , Xufang Luo , Dongsheng Li

Vision Transformer (ViT) models have recently emerged as powerful and versatile models for various visual tasks. Recently, a work called PMF has achieved promising results in few-shot image classification by utilizing pre-trained vision…

Computer Vision and Pattern Recognition · Computer Science 2023-09-19 Junjie Zhu , Yiying Li , Chunping Qiu , Ke Yang , Naiyang Guan , Xiaodong Yi

Test-time prompt tuning enhances zero-shot generalization of vision-language models but tends to ignore the relatedness among test samples during inference. Online test-time prompt tuning provides a simple way to leverage the information in…

Machine Learning · Computer Science 2025-01-29 Zehao Xiao , Shilin Yan , Jack Hong , Jiayin Cai , Xiaolong Jiang , Yao Hu , Jiayi Shen , Qi Wang , Cees G. M. Snoek

Vision-language models (VLMs) have gained widespread attention for their strong zero-shot capabilities across numerous downstream tasks. However, these models assume that each test image's class label is drawn from a predefined label set…

Computer Vision and Pattern Recognition · Computer Science 2026-01-30 Yongguang Li , Jindong Li , Qi Wang , Qianli Xing , Runliang Niu , Shengsheng Wang , Menglin Yang

Large-scale pre-trained Vision-Language models (VLMs), such as CLIP, exhibit strong zero-shot generalization, yet remain highly vulnerable to imperceptible adversarial perturbations, raising serious safety concerns for open-world…

Computer Vision and Pattern Recognition · Computer Science 2026-05-19 Xin Wang , Yixu Wang , Jiaming Zhang , Ruofan Wang , Jiaqi Yu , Kai Chen , Jingjing Chen , Xingjun Ma , Yu-Gang Jiang

Large-scale vision-language models (VLMs), e.g., CLIP, learn broad visual concepts from tedious training data, showing superb generalization ability. Amount of prompt learning methods have been proposed to efficiently adapt the VLMs to…

Computer Vision and Pattern Recognition · Computer Science 2023-09-11 Hongyu Hu , Tiancheng Lin , Jie Wang , Zhenbang Sun , Yi Xu

Generalized zero-shot learning aims to recognize both seen and unseen classes with the help of semantic information that is shared among different classes. It inevitably requires consistent visual-semantic alignment. Existing approaches…

Computer Vision and Pattern Recognition · Computer Science 2025-04-01 Huajie Jiang , Zhengxian Li , Xiaohan Yu , Yongli Hu , Baocai Yin , Jian Yang , Yuankai Qi