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This study aims to address the growing challenge of distinguishing computer-generated imagery (CGI) from authentic digital images across three different color spaces; RGB, YCbCr, and HSV. Given the limitations of existing classification…

Computer Vision and Pattern Recognition · Computer Science 2025-05-23 Preeti Mehta , Aman Sagar , Suchi Kumari

In the field of low-light image enhancement, both traditional Retinex methods and advanced deep learning techniques such as Retinexformer have shown distinct advantages and limitations. Traditional Retinex methods, designed to mimic the…

Computer Vision and Pattern Recognition · Computer Science 2024-05-21 Jiesong Bai , Yuhao Yin , Qiyuan He , Yuanxian Li , Xiaofeng Zhang

Current self-supervised denoising methods for paired noisy images typically involve mapping one noisy image through the network to the other noisy image. However, after measuring the spectral bias of such methods using our proposed Image…

Computer Vision and Pattern Recognition · Computer Science 2025-10-02 Wang Zhang , Huaqiu Li , Xiaowan Hu , Tao Jiang , Zikang Chen , Haoqian Wang

To maintain a standard in a medical imaging study, images should have necessary image quality for potential diagnostic use. Although CNN-based approaches are used to assess the image quality, their performance can still be improved in terms…

Image and Video Processing · Electrical Eng. & Systems 2022-08-15 Caner Ozer , Arda Guler , Aysel Turkvatan Cansever , Deniz Alis , Ercan Karaarslan , Ilkay Oksuz

In the field of medical images, although various works find Swin Transformer has promising effectiveness on pixelwise dense prediction, whether pre-training these models without using extra dataset can further boost the performance for the…

Computer Vision and Pattern Recognition · Computer Science 2024-08-13 Xinrong Hu , Dewen Zeng , Yawen Wu , Xueyang Li , Yiyu Shi

Images captured from low-light scenes often suffer from severe degradations, including low visibility, color cast and intensive noises, etc. These factors not only affect image qualities, but also degrade the performance of downstream…

Computer Vision and Pattern Recognition · Computer Science 2021-12-10 Risheng Liu , Long Ma , Tengyu Ma , Xin Fan , Zhongxuan Luo

Single image super resolution aims to enhance image quality with respect to spatial content, which is a fundamental task in computer vision. In this work, we address the task of single frame super resolution with the presence of image…

Computer Vision and Pattern Recognition · Computer Science 2020-03-05 Xinyi Zhang , Hang Dong , Zhe Hu , Wei-Sheng Lai , Fei Wang , Ming-Hsuan Yang

The task of single image super-resolution (SISR) aims at reconstructing a high-resolution (HR) image from a low-resolution (LR) image. Although significant progress has been made by deep learning models, they are trained on synthetic paired…

Image and Video Processing · Electrical Eng. & Systems 2019-10-15 Zhen Han , Enyan Dai , Xu Jia , Xiaoying Ren , Shuaijun Chen , Chunjing Xu , Jianzhuang Liu , Qi Tian

Many existing methods for low-light image enhancement (LLIE) based on Retinex theory ignore important factors that affect the validity of this theory in digital imaging, such as noise, quantization error, non-linearity, and dynamic range…

Computer Vision and Pattern Recognition · Computer Science 2024-04-05 Shangquan Sun , Wenqi Ren , Jingyang Peng , Fenglong Song , Xiaochun Cao

Currently, low-resolution image recognition is confronted with a significant challenge in the field of intelligent traffic perception. Compared to high-resolution images, low-resolution images suffer from small size, low quality, and lack…

Computer Vision and Pattern Recognition · Computer Science 2023-09-29 Zongcai Tan , Zhenhai Gao

Semantic communications (SCs) play a central role in shaping the future of the sixth generation (6G) wireless systems, which leverage rapid advances in deep learning (DL). In this regard, end-to-end optimized DL-based joint source-channel…

Information Theory · Computer Science 2025-05-02 Mahmoud M. Salim , Mohamed S. Abdalzaher , Ali H. Muqaibel , Hussein A. Elsayed , Inkyu Lee

Getting rid of the fundamental limitations in fitting to the paired training data, recent unsupervised low-light enhancement methods excel in adjusting illumination and contrast of images. However, for unsupervised low light enhancement,…

Computer Vision and Pattern Recognition · Computer Science 2022-07-05 Zhangkai Ni , Wenhan Yang , Hanli Wang , Shiqi Wang , Lin Ma , Sam Kwong

In low-light conditions, a conventional camera imaging pipeline produces sub-optimal images that are usually dark and noisy due to a low photon count and low signal-to-noise ratio (SNR). We present a data-driven approach that learns the…

Computer Vision and Pattern Recognition · Computer Science 2019-04-15 Syed Waqas Zamir , Aditya Arora , Salman Khan , Fahad Shahbaz Khan , Ling Shao

Satellite imagery plays a crucial role in various fields; however, atmospheric interference and haze significantly degrade image clarity and reduce the accuracy of information extraction. To address these challenges, this paper proposes a…

Computer Vision and Pattern Recognition · Computer Science 2025-09-03 Jongwook Si , Sungyoung Kim

Convolutional neural network (CNN) based image enhancement methods such as super-resolution and detail enhancement have achieved remarkable performances. However, amounts of operations including convolution and parameters within the…

Image and Video Processing · Electrical Eng. & Systems 2022-05-03 Sangwook Baek , Yongsup Park , Youngo Park , Jungmin Lee , Kwangpyo Choi

A light field image captures scenes through its micro-lens array, providing a rich representation that encompasses spatial and angular information. While this richness comes at significant data redundancy, most existing methods tend to…

Image and Video Processing · Electrical Eng. & Systems 2026-02-19 Zeke Zexi Hu , Haodong Chen , Hui Ye , Xiaoming Chen , Vera Yuk Ying Chung , Yiran Shen , Weidong Cai

As the quality of optical sensors improves, there is a need for processing large-scale images. In particular, the ability of devices to capture ultra-high definition (UHD) images and video places new demands on the image processing…

Computer Vision and Pattern Recognition · Computer Science 2022-12-23 Tao Wang , Kaihao Zhang , Tianrun Shen , Wenhan Luo , Bjorn Stenger , Tong Lu

Significant progress has been made in self-supervised image denoising (SSID) in the recent few years. However, most methods focus on dealing with spatially independent noise, and they have little practicality on real-world sRGB images with…

Computer Vision and Pattern Recognition · Computer Science 2023-03-28 Junyi Li , Zhilu Zhang , Xiaoyu Liu , Chaoyu Feng , Xiaotao Wang , Lei Lei , Wangmeng Zuo

Ambient lighting conditions play a crucial role in determining the perceptual quality of images from photographic devices. In general, inadequate transmission light and undesired atmospheric conditions jointly degrade the image quality. If…

Computer Vision and Pattern Recognition · Computer Science 2022-04-18 Masud An Nur Islam Fahim , Nazmus Saqib , Jung Ho Yub

Low-light image enhancement, such as recovering color and texture details from low-light images, is a complex and vital task. For automated driving, low-light scenarios will have serious implications for vision-based applications. To…

Image and Video Processing · Electrical Eng. & Systems 2021-09-01 Yangyang Qu , Kai Chen , Chao Liu , Yongsheng Ou