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Unsupervised anomaly detection (AD) in medical images aims to identify abnormal regions without relying on pixel-level annotations, which is crucial for scalable and label-efficient diagnostic systems. In this paper, we propose a novel…

Image and Video Processing · Electrical Eng. & Systems 2026-02-05 Jiayu Huo , Jingyuan Hong , Liyun Chen

Infrared and visible image fusion, a hot topic in the field of image processing, aims at obtaining fused images keeping the advantages of source images. This paper proposes a novel auto-encoder (AE) based fusion network. The core idea is…

Image and Video Processing · Electrical Eng. & Systems 2021-04-09 Zixiang Zhao , Shuang Xu , Chunxia Zhang , Junmin Liu , Pengfei Li , Jiangshe Zhang

Pre-trained vision encoders like DINOv2 have demonstrated exceptional performance on unimodal tasks. However, we observe that their feature representations are poorly aligned across different modalities. For instance, the feature embedding…

Computer Vision and Pattern Recognition · Computer Science 2026-03-02 Rishabh Kabra , Maks Ovsjanikov , Drew A. Hudson , Ye Xia , Skanda Koppula , Andre Araujo , Joao Carreira , Niloy J. Mitra

Medical image analysis frequently encounters data scarcity challenges. Transfer learning has been effective in addressing this issue while conserving computational resources. The recent advent of foundational models like the DINOv2, which…

Image and Video Processing · Electrical Eng. & Systems 2024-02-14 Yuning Huang , Jingchen Zou , Lanxi Meng , Xin Yue , Qing Zhao , Jianqiang Li , Changwei Song , Gabriel Jimenez , Shaowu Li , Guanghui Fu

Image denoising aims to restore a clean image from an observed noisy image. The model-based image denoising approaches can achieve good generalization ability over different noise levels and are with high interpretability. Learning-based…

Image and Video Processing · Electrical Eng. & Systems 2022-07-13 Jun-Jie Huang , Pier Luigi Dragotti

Event cameras, with their high dynamic range, show great promise for Low-light Image Enhancement (LLIE). Existing works primarily focus on designing effective modal fusion strategies. However, a key challenge is the dual degradation from…

Computer Vision and Pattern Recognition · Computer Science 2026-03-06 Zishu Yao , Xiang-Xiang Su , Shengning Zhou , Guang-Yong Chen , Guodong Fan , Xing Chen

Vision Foundation Models (VFMs) have advanced representation learning through self-supervised methods. However, existing training pipelines are often inflexible, domain-specific, or computationally expensive, which limits their usability…

Computer Vision and Pattern Recognition · Computer Science 2025-11-04 Mahmut Selman Gokmen , Cody Bumgardner

Ambient Lighting Normalization (ALN) aims to restore images degraded by complex, spatially varying illumination conditions. Existing methods, such as IFBlend, leverage frequency-domain priors to model illumination variations, but still…

Computer Vision and Pattern Recognition · Computer Science 2026-04-16 Jiatao Dai , Wei Dong , Han Zhou , Chengzhou Tang , Jun Chen

Image denoising is the process of removing noise from noisy images, which is an image domain transferring task, i.e., from a single or several noise level domains to a photo-realistic domain. In this paper, we propose an effective image…

Image and Video Processing · Electrical Eng. & Systems 2019-06-05 Xianxu Hou , Hongming Luo , Jingxin Liu , Bolei Xu , Ke Sun , Yuanhao Gong , Bozhi Liu , Guoping Qiu

Vision Transformers (ViTs), such as DINOv2, achieve strong performance across domains but often repurpose low-informative patch tokens in ways that reduce the interpretability of attention and feature maps. This challenge is especially…

Computer Vision and Pattern Recognition · Computer Science 2025-11-11 Joel Valdivia Ortega , Lorenz Lamm , Franziska Eckardt , Benedikt Schworm , Marion Jasnin , Tingying Peng

One of the fundamental challenges in image restoration is denoising, where the objective is to estimate the clean image from its noisy measurements. To tackle such an ill-posed inverse problem, the existing denoising approaches generally…

Computer Vision and Pattern Recognition · Computer Science 2021-11-12 Lanqing Guo , Siyu Huang , Haosen Liu , Bihan Wen

We present a novel method for scene change detection that leverages the robust feature extraction capabilities of a visual foundational model, DINOv2, and integrates full-image cross-attention to address key challenges such as varying…

Computer Vision and Pattern Recognition · Computer Science 2025-03-05 Chun-Jung Lin , Sourav Garg , Tat-Jun Chin , Feras Dayoub

Real noisy-clean pairs on a large scale are costly and difficult to obtain. Meanwhile, supervised denoisers trained on synthetic data perform poorly in practice. Self-supervised denoisers, which learn only from single noisy images, solve…

Image and Video Processing · Electrical Eng. & Systems 2023-05-09 Zejin Wang , Jiazheng Liu , Guoqing Li , Hua Han

Previous raw image-based low-light image enhancement methods predominantly relied on feed-forward neural networks to learn deterministic mappings from low-light to normally-exposed images. However, they failed to capture critical…

Computer Vision and Pattern Recognition · Computer Science 2023-08-16 Yufei Wang , Yi Yu , Wenhan Yang , Lanqing Guo , Lap-Pui Chau , Alex C. Kot , Bihan Wen

Recently, the deep learning technology has been successfully applied in the field of image compression, leading to superior rate-distortion performance. However, a challenge of many learning-based approaches is that they often achieve…

Image and Video Processing · Electrical Eng. & Systems 2023-08-24 Yongqiang Wang , Feng Liang , Haisheng Fu , Jie Liang , Haipeng Qin , Junzhe Liang

Low-light image enhancement (LIE) aims at precisely and efficiently recovering an image degraded in poor illumination environments. Recent advanced LIE techniques are using deep neural networks, which require lots of low-normal light image…

Computer Vision and Pattern Recognition · Computer Science 2024-09-30 Yunlong Lin , Zhenqi Fu , Kairun Wen , Tian Ye , Sixiang Chen , Ge Meng , Yingying Wang , Yue Huang , Xiaotong Tu , Xinghao Ding

We present Neural Congealing -- a zero-shot self-supervised framework for detecting and jointly aligning semantically-common content across a given set of images. Our approach harnesses the power of pre-trained DINO-ViT features to learn:…

Computer Vision and Pattern Recognition · Computer Science 2023-03-07 Dolev Ofri-Amar , Michal Geyer , Yoni Kasten , Tali Dekel

This paper studies a diffusion-based framework to address the low-light image enhancement problem. To harness the capabilities of diffusion models, we delve into this intricate process and advocate for the regularization of its inherent…

Computer Vision and Pattern Recognition · Computer Science 2023-10-30 Jinhui Hou , Zhiyu Zhu , Junhui Hou , Hui Liu , Huanqiang Zeng , Hui Yuan

Image composition is an important operation in image processing, but the inconsistency between foreground and background significantly degrades the quality of composite image. Image harmonization, aiming to make the foreground compatible…

Computer Vision and Pattern Recognition · Computer Science 2020-11-03 Wenyan Cong , Jianfu Zhang , Li Niu , Liu Liu , Zhixin Ling , Weiyuan Li , Liqing Zhang

Self-supervised frameworks that learn denoising models with merely individual noisy images have shown strong capability and promising performance in various image denoising tasks. Existing self-supervised denoising frameworks are mostly…

Computer Vision and Pattern Recognition · Computer Science 2020-10-26 Yaochen Xie , Zhengyang Wang , Shuiwang Ji