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Most existing Vision-and-Language (V&L) models rely on pre-trained visual encoders, using a relatively small set of manually-annotated data (as compared to web-crawled data), to perceive the visual world. However, it has been observed that…

Computer Vision and Pattern Recognition · Computer Science 2021-07-15 Sheng Shen , Liunian Harold Li , Hao Tan , Mohit Bansal , Anna Rohrbach , Kai-Wei Chang , Zhewei Yao , Kurt Keutzer

Vision-language retrieval (VLR) has attracted significant attention in both academia and industry, which involves using text (or images) as queries to retrieve corresponding images (or text). However, existing methods often neglect the rich…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 GuangHao Meng , Sunan He , Jinpeng Wang , Tao Dai , Letian Zhang , Jieming Zhu , Qing Li , Gang Wang , Rui Zhang , Yong Jiang

Large vision-language models (VLMs) are shown to learn rich joint image-text representations enabling high performances in relevant downstream tasks. However, they fail to showcase their quantitative understanding of objects, and they lack…

Computer Vision and Pattern Recognition · Computer Science 2024-06-11 Harshvardhan Mestha , Tejas Agrawal , Karan Bania , Shreyas V , Yash Bhisikar

Vision language models (VLMs) demonstrate impressive capabilities in visual question answering and image captioning, acting as a crucial link between visual and language models. However, existing open-source VLMs heavily rely on pretrained…

Computer Vision and Pattern Recognition · Computer Science 2024-07-24 Aristeidis Panos , Rahaf Aljundi , Daniel Olmeda Reino , Richard E Turner

Pretrained vision-language models, such as CLIP, show promising zero-shot performance across a wide variety of datasets. For closed-set classification tasks, however, there is an inherent limitation: CLIP image encoders are typically…

Computer Vision and Pattern Recognition · Computer Science 2023-09-14 Piyapat Saranrittichai , Mauricio Munoz , Volker Fischer , Chaithanya Kumar Mummadi

Pre-trained vision-language models (e.g., CLIP) have shown powerful zero-shot transfer capabilities. But they still struggle with domain shifts and typically require labeled data to adapt to downstream tasks, which could be costly. In this…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Jiachen Liang , Ruibing Hou , Minyang Hu , Hong Chang , Shiguang Shan , Xilin Chen

Facial expressions play a fundamental role in human communication. Indeed, they typically reveal the real emotional status of people beyond the spoken language. Moreover, the comprehension of human affect based on visual patterns is a key…

Computer Vision and Pattern Recognition · Computer Science 2021-03-11 Fabio Valerio Massoli , Donato Cafarelli , Giuseppe Amato , Fabrizio Falchi

The Contrastive Language-Image Pre-training (CLIP) has recently shown remarkable generalization on "zero-shot" training and has applied to many downstream tasks. We explore the adaptation of CLIP to achieve a more efficient and generalized…

Computer Vision and Pattern Recognition · Computer Science 2023-08-10 Qiang Wang , Junlong Du , Ke Yan , Shouhong Ding

Facial expressions of emotion are a major channel in our daily communications, and it has been subject of intense research in recent years. To automatically infer facial expressions, convolutional neural network based approaches has become…

Computer Vision and Pattern Recognition · Computer Science 2020-08-14 Bita Houshmand , Naimul Khan

Large-scale contrastive vision-language pre-training has shown significant progress in visual representation learning. Unlike traditional visual systems trained by a fixed set of discrete labels, a new paradigm was introduced in…

Computer Vision and Pattern Recognition · Computer Science 2025-03-26 Peng Gao , Shijie Geng , Renrui Zhang , Teli Ma , Rongyao Fang , Yongfeng Zhang , Hongsheng Li , Yu Qiao

Large-scale Vision-Language Foundation Models (VLFMs), such as CLIP, now underpin a wide range of computer vision research and applications. VLFMs are often adapted to various domain-specific tasks. However, VLFM performance on novel,…

Computer Vision and Pattern Recognition · Computer Science 2026-03-05 Chris Vorster , Mayug Maniparambil , Noel E. O'Connor , Noel Murphy , Derek Molloy

This paper introduces LLDif, a novel diffusion-based facial expression recognition (FER) framework tailored for extremely low-light (LL) environments. Images captured under such conditions often suffer from low brightness and significantly…

Computer Vision and Pattern Recognition · Computer Science 2024-08-09 Zhifeng Wang , Kaihao Zhang , Ramesh Sankaranarayana

The performance of vision-language models (VLMs), such as CLIP, in visual classification tasks, has been enhanced by leveraging semantic knowledge from large language models (LLMs), including GPT. Recent studies have shown that in zero-shot…

Computer Vision and Pattern Recognition · Computer Science 2024-11-12 Hankyeol Lee , Gawon Seo , Wonseok Choi , Geunyoung Jung , Kyungwoo Song , Jiyoung Jung

Recently, large-scale pre-trained vision-language models (e.g. CLIP and ALIGN) have demonstrated remarkable effectiveness in acquiring transferable visual representations. To leverage the valuable knowledge encoded within these models for…

Computer Vision and Pattern Recognition · Computer Science 2023-08-28 Yi Zhang , Ce Zhang , Xueting Hu , Zhihai He

Accurate classification of focal liver lesions is crucial for diagnosis and treatment in hepatology. However, traditional supervised deep learning models depend on large-scale annotated datasets, which are often limited in medical imaging.…

Computer Vision and Pattern Recognition · Computer Science 2025-05-07 Song Jian , Hu Yuchang , Wang Hui , Chen Yen-Wei

Although there has been much progress in the area of facial expression recognition (FER), most existing methods suffer when presented with images that have been captured from viewing angles that are non-frontal and substantially different…

Computer Vision and Pattern Recognition · Computer Science 2023-11-14 Shuvendu Roy , Ali Etemad

Recently, Class-Agnostic Counting (CAC) problem has garnered increasing attention owing to its intriguing generality and superior efficiency compared to Category-Specific Counting (CSC). This paper proposes a novel ExpressCount to enhance…

Computer Vision and Pattern Recognition · Computer Science 2024-02-09 Mingjie Wang , Jun Zhou , Yong Dai , Eric Buys , Minglun Gong

Large-scale but noisy image-text pair data have paved the way for the success of Contrastive Language-Image Pretraining (CLIP). As the foundation vision encoder, CLIP in turn serves as the cornerstone for most large vision-language models…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Zhixiang Wei , Guangting Wang , Xiaoxiao Ma , Ke Mei , Huaian Chen , Yi Jin , Fengyun Rao

Contrastive language image pretraining (CLIP) is a standard method for training vision-language models. While CLIP is scalable, promptable, and robust to distribution shifts on image classification tasks, it lacks object localization…

Large-scale pre-trained models have demonstrated impressive performance in vision and language tasks within open-world scenarios. Due to the lack of comparable pre-trained models for 3D shapes, recent methods utilize language-image…

Computer Vision and Pattern Recognition · Computer Science 2024-09-12 Dan Song , Xinwei Fu , Ning Liu , Weizhi Nie , Wenhui Li , Lanjun Wang , You Yang , Anan Liu