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Person re-identification (re-id) is a cross-camera retrieval task which establishes a correspondence between images of a person from multiple cameras. Deep Learning methods have been successfully applied to this problem and have achieved…

Computer Vision and Pattern Recognition · Computer Science 2019-03-06 Jean-Paul Ainam , Ke Qin , Guisong Liu , Guangchun Luo

Recently, there have been breakthroughs in computer vision ("CV") models that are more generalizable with the advent of models such as CLIP and ALIGN. In this paper, we analyze CLIP and highlight some of the challenges such models pose.…

Computer Vision and Pattern Recognition · Computer Science 2021-08-09 Sandhini Agarwal , Gretchen Krueger , Jack Clark , Alec Radford , Jong Wook Kim , Miles Brundage

Person Re-Identification (Re-ID) task seeks to enhance the tracking of multiple individuals by surveillance cameras. It supports multimodal tasks, including text-based person retrieval and human matching. One of the most significant…

Computer Vision and Pattern Recognition · Computer Science 2024-06-04 Quoc-Huy Trinh , Nhat-Tan Bui , Dinh-Hieu Hoang , Phuoc-Thao Vo Thi , Hai-Dang Nguyen , Debesh Jha , Ulas Bagci , Ngan Le , Minh-Triet Tran

Person re-identification is a key challenge for surveillance across multiple sensors. Prompted by the advent of powerful deep learning models for visual recognition, and inexpensive RGB-D cameras and sensor-rich mobile robotic platforms,…

Computer Vision and Pattern Recognition · Computer Science 2022-02-15 Frank Hafner , Amran Bhuiyan , Julian F. P. Kooij , Eric Granger

Multi-label classification is crucial for comprehensive image understanding, yet acquiring accurate annotations is challenging and costly. To address this, a recent study suggests exploiting unsupervised multi-label classification…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Dongseob Kim , Hyunjung Shim

Vision-language models like CLIP show impressive ability to align images and text, but their training on short, concise captions makes them struggle with lengthy, detailed descriptions. Recent advances mitigate this challenge by leveraging…

Computer Vision and Pattern Recognition · Computer Science 2025-12-16 Chau Truong , Hieu Ta Quang , Dung D. Le

CLIP-based person re-identification (ReID) methods aggregate spatial features into a single global \texttt{[CLS]} token optimized for image-text alignment rather than spatial selectivity, making representations fragile under occlusion and…

Computer Vision and Pattern Recognition · Computer Science 2026-04-27 Aotian Zheng , Winston Sun , Bahaa Alattar , Vitaly Ablavsky , Jenq-Neng Hwang

Continual learning of vision-language models (VLMs) focuses on leveraging cross-modal pretrained knowledge to incrementally adapt to expanding downstream tasks and datasets, while tackling the challenge of knowledge forgetting. Existing…

Computer Vision and Pattern Recognition · Computer Science 2026-03-24 Chiyuan He , Zihuan Qiu , Fanman Meng , Linfeng Xu , Qingbo Wu , Hongliang Li

Transfer learning enables the sharing of common knowledge among models for a variety of downstream tasks, but traditional methods suffer in limited training data settings and produce narrow models incapable of effectively generalizing under…

Computer Vision and Pattern Recognition · Computer Science 2023-11-07 Kevin Vogt-Lowell , Noah Lee , Theodoros Tsiligkaridis , Marc Vaillant

Identifying the same individual across different scenes is an important yet difficult task in intelligent video surveillance. Its main difficulty lies in how to preserve similarity of the same person against large appearance and structure…

Computer Vision and Pattern Recognition · Computer Science 2015-12-14 Shengyong Ding , Liang Lin , Guangrun Wang , Hongyang Chao

Given unlabelled datasets containing both old and new categories, generalized category discovery (GCD) aims to accurately discover new classes while correctly classifying old classes. Current GCD methods only use a single visual modality of…

Computer Vision and Pattern Recognition · Computer Science 2025-03-24 Enguang Wang , Zhimao Peng , Zhengyuan Xie , Fei Yang , Xialei Liu , Ming-Ming Cheng

While vision-language models like CLIP have advanced zero-shot surgical phase recognition, they struggle with fine-grained surgical activities, especially action triplets. This limitation arises because current CLIP formulations rely on…

Computer Vision and Pattern Recognition · Computer Science 2025-03-30 Saurav Sharma , Didier Mutter , Nicolas Padoy

Contrastive Language-Image Pre-training (CLIP) has achieved widely applications in various computer vision tasks, e.g., text-to-image generation, Image-Text retrieval and Image captioning. However, CLIP suffers from high memory and…

Computer Vision and Pattern Recognition · Computer Science 2026-02-06 Kangjie Zhang , Wenxuan Huang , Xin Zhou , Boxiang Zhou , Dejia Song , Yuan Xie , Baochang Zhang , Lizhuang Ma , Nemo Chen , Xu Tang , Yao Hu , Shaohui Lin

Unsupervised representation learning for image clustering is essential in computer vision. Although the advancement of visual models has improved image clustering with efficient visual representations, challenges still remain. Firstly,…

Computer Vision and Pattern Recognition · Computer Science 2025-02-14 Zijie Song , Zhenzhen Hu , Richang Hong

Contrastive Language-Image Pre-training (CLIP) on large-scale image-caption datasets learns representations that can achieve remarkable zero-shot generalization. However, such models require a massive amount of pre-training data. Improving…

Computer Vision and Pattern Recognition · Computer Science 2024-03-21 Siddharth Joshi , Arnav Jain , Ali Payani , Baharan Mirzasoleiman

Multi-modal representation learning has become a pivotal area in artificial intelligence, enabling the integration of diverse modalities such as vision, text, and audio to solve complex problems. However, existing approaches predominantly…

Machine Learning · Computer Science 2025-05-01 Sangyeon Cho , Jangyeong Jeon , Mingi Kim , Junyeong Kim

The complex application scenarios have raised critical requirements for precise and generalizable gaze estimation methods. Recently, the pre-trained CLIP has achieved remarkable performance on various vision tasks, but its potentials have…

Computer Vision and Pattern Recognition · Computer Science 2025-07-31 Lin Zhang , Yi Tian , XiYun Wang , Wanru Xu , Yi Jin , Yaping Huang

Prompt learning has propelled vision-language models like CLIP to excel in diverse tasks, making them ideal for federated learning due to computational efficiency. However, conventional approaches that rely solely on final-layer features…

Computer Vision and Pattern Recognition · Computer Science 2025-08-19 Suraj Prasad , Navyansh Mahla , Sunny Gupta , Amit Sethi

Person re-identification is challenging due to the large variations of pose, illumination, occlusion and camera view. Owing to these variations, the pedestrian data is distributed as highly-curved manifolds in the feature space, despite the…

Computer Vision and Pattern Recognition · Computer Science 2016-11-02 Hailin Shi , Yang Yang , Xiangyu Zhu , Shengcai Liao , Zhen Lei , Weishi Zheng , Stan Z. Li

We propose DiffCLIP, a novel vision-language model that extends the differential attention mechanism to CLIP architectures. Differential attention was originally developed for large language models to amplify relevant context while…

Computer Vision and Pattern Recognition · Computer Science 2025-03-11 Hasan Abed Al Kader Hammoud , Bernard Ghanem