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Image enhancement is an important stage in the image-processing domain. The most known image enhancement method is the histogram equalization. This method is an automated one, and realizes a simultaneous modification for brightness and…

Computer Vision and Pattern Recognition · Computer Science 2015-02-17 Vasile Patrascu

Underwater image enhancement (UIE) is a highly challenging task due to the complexity of underwater environment and the diversity of underwater image degradation. Due to the application of deep learning, current UIE methods have made…

Computer Vision and Pattern Recognition · Computer Science 2024-11-19 Yi Liu , Qiuping Jiang , Xinyi Wang , Ting Luo , Jingchun Zhou

Contrast enhancement is very important in terms of assessing images in an objective way. Contrast enhancement is also significant for various algorithms including supervised and unsupervised algorithms for accurate classification of…

Computer Vision and Pattern Recognition · Computer Science 2022-06-01 Emre Can Kuran , Umut Kuran , Mehmet Bilal Er

In this paper, a comparative study between proposed hyper kurtosis based modified duo-histogram equalization (HKMDHE) algorithm and contrast limited adaptive histogram enhancement (CLAHE) has been presented for the implementation of…

Computer Vision and Pattern Recognition · Computer Science 2015-05-26 Sabyasachi Mukhopadhyay , Soham Mandal , Sawon Pratiher , Satyasaran Changdar , Ritwik Burman , Nirmalya Ghosh , Prasanta K. Panigrahi

In the immunohistochemical (IHC) analysis during surgery, frozen-section (FS) images are used to determine the benignity or malignancy of the tumor. However, FS image faces problems such as image contamination and poor nuclear detail, which…

Computer Vision and Pattern Recognition · Computer Science 2025-03-04 Yiyang Lin , Danling Jiang , Xinyu Liu , Yun Miao , Yixuan Yuan

This paper proposes a novel image contrast enhancement method based on both a noise aware shadow-up function and Retinex (retina and cortex) decomposition. Under low light conditions, images taken by digital cameras have low contrast in…

Computer Vision and Pattern Recognition · Computer Science 2018-11-09 Chien Cheng Chien , Yuma Kinoshita , Sayaka Shiota , Hitoshi Kiya

Image restoration under hazy weather condition, which is called single image dehazing, has been of significant interest for various computer vision applications. In recent years, deep learning-based methods have achieved success. However,…

Computer Vision and Pattern Recognition · Computer Science 2023-09-26 Tao Wang , Guangpin Tao , Wanglong Lu , Kaihao Zhang , Wenhan Luo , Xiaoqin Zhang , Tong Lu

Low-Light Image Enhancement (LLIE) is crucial for improving both human perception and computer vision tasks. This paper addresses two challenges in zero-reference LLIE: obtaining perceptually 'good' images using the Contrastive…

Computer Vision and Pattern Recognition · Computer Science 2025-07-09 Yuka Ogino , Takahiro Toizumi , Atsushi Ito

Wireless Capsule Endoscopy (WCE) presented in 2001 as one of the key approaches to observe the entire gastrointestinal (GI) tract, generally the small bowels. It has been used to detect diseases in the gastrointestinal tract. Endoscopic…

Image and Video Processing · Electrical Eng. & Systems 2021-02-12 Rezvan Ezatian , Donya Khaledyan , Kian Jafari , Morteza Heidari , Abolfazl Zargari Khuzani , Najmeh Mashhadi

This paper proposes an advanced method for contrast enhancement of capsule endoscopic images, with the main objective to obtain sufficient information about the vessels and structures in more distant (or darker) parts of capsule endoscopic…

Image and Video Processing · Electrical Eng. & Systems 2021-04-09 Olivier Rukundo , Marius Pedersen , Øistein Hovde

Due to numerous hardware shortcomings, medical image acquisition devices are susceptible to producing low-quality (i.e., low contrast, inappropriate brightness, noisy, etc.) images. Regrettably, perceptually degraded images directly impact…

Image and Video Processing · Electrical Eng. & Systems 2025-03-12 S M A Sharif , Rizwan Ali Naqvi , Mithun Biswas , Woong-Kee Loh

Vision-Language Models (VLMs) have demonstrated remarkable success across diverse visual tasks, yet their performance degrades in complex visual environments. While existing enhancement approaches require additional training, rely on…

Computer Vision and Pattern Recognition · Computer Science 2025-09-12 Yuyao Ge , Shenghua Liu , Yiwei Wang , Lingrui Mei , Baolong Bi , Xuanshan Zhou , Jiayu Yao , Jiafeng Guo , Xueqi Cheng

Retinal imaging serves as a valuable tool for diagnosis of various diseases. However, reading retinal images is a difficult and time-consuming task even for experienced specialists. The fundamental step towards automated retinal image…

Computer Vision and Pattern Recognition · Computer Science 2020-05-28 Liangzhi Li , Manisha Verma , Yuta Nakashima , Ryo Kawasaki , Hajime Nagahara

The large language model and high-level vision model have achieved impressive performance improvements with large datasets and model sizes. However, low-level computer vision tasks, such as image dehaze and blur removal, still rely on a…

Computer Vision and Pattern Recognition · Computer Science 2023-06-29 Zheyan Jin , Shiqi Chen , Yueting Chen , Zhihai Xu , Huajun Feng

Retinal blood vessels structure contains information about diseases like obesity, diabetes, hypertension and glaucoma. This information is very useful in identification and treatment of these fatal diseases. To obtain this information,…

Image and Video Processing · Electrical Eng. & Systems 2020-12-08 Sushil Kumar Saroj , Vikas Ratna , Rakesh Kumar , Nagendra Pratap Singh

Uncertainty estimation is critical for reliable medical image segmentation, particularly in retinal vessel analysis, where accurate predictions are essential for diagnostic applications. Deep Ensembles, where multiple networks are trained…

Computer Vision and Pattern Recognition · Computer Science 2025-09-16 Jeremiah Fadugba , Petru Manescu , Bolanle Oladejo , Delmiro Fernandez-Reyes , Philipp Berens

Low light images suffer from severe noise, low brightness, low contrast, etc. In previous researches, many image enhancement methods have been proposed, but few methods can deal with these problems simultaneously. In this paper, to solve…

Image and Video Processing · Electrical Eng. & Systems 2020-08-27 Yu Zhang , Xiaoguang Di , Bin Zhang , Ruihang Ji , Chunhui Wang

Document image binarization is the initial step and a crucial in many document analysis and recognition scheme. In fact, it is still a relevant research subject and a fundamental challenge due to its importance and influence. This paper…

Computer Vision and Pattern Recognition · Computer Science 2019-01-29 Omar Boudraa , Walid Khaled Hidouci , Dominique Michelucci

Matching of binary image features is an important step in many different computer vision applications. Conventionally, an arbitrary threshold is used to identify a correct match from incorrect matches using Hamming distance which may…

Computer Vision and Pattern Recognition · Computer Science 2017-04-21 Erkan Bostanci , Nadia Kanwal , Betul Bostanci , Mehmet Serdar Guzel

Recent years have witnessed an increased interest in image dehazing. Many deep learning methods have been proposed to tackle this challenge, and have made significant accomplishments dealing with homogeneous haze. However, these solutions…

Computer Vision and Pattern Recognition · Computer Science 2023-04-19 Yangyi Liu , Huan Liu , Liangyan Li , Zijun Wu , Jun Chen