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Visual place recognition is a critical task in computer vision, especially for localization and navigation systems. Existing methods often rely on contrastive learning: image descriptors are trained to have small distance for similar images…

Computer Vision and Pattern Recognition · Computer Science 2024-01-30 María Leyva-Vallina , Nicola Strisciuglio , Nicolai Petkov

Vision-language models (VLMs) such as CLIP demonstrate strong generalization in zero-shot classification but remain highly vulnerable to adversarial perturbations. Existing methods primarily focus on adversarial fine-tuning or prompt…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Xingyu Zhu , Beier Zhu , Shuo Wang , Kesen Zhao , Hanwang Zhang

Image captioning aims at generating descriptive and meaningful textual descriptions of images, enabling a broad range of vision-language applications. Prior works have demonstrated that harnessing the power of Contrastive Image Language…

Computer Vision and Pattern Recognition · Computer Science 2024-01-05 Longtian Qiu , Shan Ning , Xuming He

State-of-the-art vision and vision-and-language models rely on large-scale visio-linguistic pretraining for obtaining good performance on a variety of downstream tasks. Generally, such models are often either cross-modal (contrastive) or…

Computer Vision and Pattern Recognition · Computer Science 2022-03-31 Amanpreet Singh , Ronghang Hu , Vedanuj Goswami , Guillaume Couairon , Wojciech Galuba , Marcus Rohrbach , Douwe Kiela

Contrastive language--audio pretraining (CLAP) has achieved remarkable success as an audio--text embedding framework, but existing approaches are limited to monaural or single-source conditions and cannot fully capture spatial information.…

Unsupervised large-scale vision-language pre-training has shown promising advances on various downstream tasks. Existing methods often model the cross-modal interaction either via the similarity of the global feature of each modality which…

Computer Vision and Pattern Recognition · Computer Science 2021-11-16 Lewei Yao , Runhui Huang , Lu Hou , Guansong Lu , Minzhe Niu , Hang Xu , Xiaodan Liang , Zhenguo Li , Xin Jiang , Chunjing Xu

Contrastive Language-Image Pre-training (CLIP) relies on Vision Transformers whose attention mechanism is susceptible to spurious correlations, and scales quadratically with resolution. To address these limitations, We present CLIMP, the…

Computer Vision and Pattern Recognition · Computer Science 2026-01-13 Nimrod Shabtay , Itamar Zimerman , Eli Schwartz , Raja Giryes

LiDAR-camera 3D representation pretraining has shown significant promise for 3D perception tasks and related applications. However, two issues widely exist in this framework: 1) Solely keyframes are used for training. For example, in…

Computer Vision and Pattern Recognition · Computer Science 2024-07-18 Tianfang Sun , Zhizhong Zhang , Xin Tan , Yanyun Qu , Yuan Xie

Semantic overlap among land-cover categories, highly imbalanced label distributions, and complex inter-class co-occurrence patterns constitute significant challenges for multi-label remote-sensing image retrieval. In this article,…

Computer Vision and Pattern Recognition · Computer Science 2026-04-07 Amna Amir , Erchan Aptoula

The Contrastive Language-Image Pretraining (CLIP) model has been widely used in various downstream vision tasks. The few-shot learning paradigm has been widely adopted to augment its capacity for these tasks. However, current paradigms may…

Computer Vision and Pattern Recognition · Computer Science 2024-11-22 Jintao Rong , Hao Chen , Linlin Ou , Tianxiao Chen , Xinyi Yu , Yifan Liu

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

The tremendous success of CLIP (Radford et al., 2021) has promoted the research and application of contrastive learning for vision-language pretraining. In this work, we construct a large-scale dataset of image-text pairs in Chinese, where…

Computer Vision and Pattern Recognition · Computer Science 2023-05-24 An Yang , Junshu Pan , Junyang Lin , Rui Men , Yichang Zhang , Jingren Zhou , Chang Zhou

Pre-trained Vision-Language Models (VLMs), such as CLIP, have shown enhanced performance across a range of tasks that involve the integration of visual and linguistic modalities. When CLIP is used for depth estimation tasks, the patches,…

Computer Vision and Pattern Recognition · Computer Science 2023-11-03 Xueting Hu , Ce Zhang , Yi Zhang , Bowen Hai , Ke Yu , Zhihai He

Face anti-spoofing (FAS) aims to construct a robust system that can withstand diverse attacks. While recent efforts have concentrated mainly on cross-domain generalization, two significant challenges persist: limited semantic understanding…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Kun-Hsiang Lin , Yu-Wen Tseng , Kang-Yang Huang , Jhih-Ciang Wu , Wen-Huang Cheng

Accurate flood water mapping is critical for disaster management, yet current methods struggle to fully exploit the potential of spaceborne imagery. Optical data offers high interpretability but is limited by environmental conditions,…

Computer Vision and Pattern Recognition · Computer Science 2026-05-05 Jagrati Talreja , Tewodros Syum Gebre , Leila Hashemi-Beni

Large vision-language contrastive models (VLCMs), such as CLIP, have become foundational, demonstrating remarkable success across a variety of downstream tasks. Despite their advantages, these models, akin to other foundational systems,…

Computer Vision and Pattern Recognition · Computer Science 2025-07-10 Haocheng Dai , Sarang Joshi

We propose a simple strategy for masking image patches during visual-language contrastive learning that improves the quality of the learned representations and the training speed. During each iteration of training, we randomly mask clusters…

Computer Vision and Pattern Recognition · Computer Science 2024-05-15 Zihao Wei , Zixuan Pan , Andrew Owens

With the rapid development of time-domain surveys, the availability of massive light curve data offers new opportunities for studying stellar evolution and variable star classification, while simultaneously posing challenges for feature…

Solar and Stellar Astrophysics · Physics 2026-04-28 Junyao Ding , Xiaodian Chen , Xinyi Gao , Xiaoyu Tang , Shu Wang , Yang Huang , Xinyu Qi , Guirong Xue , Ali Luo , Jifeng Liu

Recent deep learning-based methods for lossy image compression achieve competitive rate-distortion performance through extensive end-to-end training and advanced architectures. However, emerging applications increasingly prioritize semantic…

Computer Vision and Pattern Recognition · Computer Science 2025-09-09 Ruiqi Shen , Haotian Wu , Wenjing Zhang , Jiangjing Hu , Deniz Gunduz

Contrastive Language-Image Pretraining (CLIP) is a popular foundation model, supporting from zero-shot classification, retrieval to encoders for multimodal large language models (MLLMs). Although CLIP is successfully trained on…