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Contrast enhancement is an important preprocessing technique for improving the performance of downstream tasks in image processing and computer vision. Among the existing approaches based on nonlinear histogram transformations, contrast…

Image and Video Processing · Electrical Eng. & Systems 2020-05-19 Vincent Stimper , Stefan Bauer , Ralph Ernstorfer , Bernhard Schölkopf , R. Patrick Xian

In medical imaging, accurate diagnosis heavily relies on effective image enhancement techniques, particularly for X-ray images. Existing methods often suffer from various challenges such as sacrificing global image characteristics over…

Computer Vision and Pattern Recognition · Computer Science 2024-11-05 Sohrab Namazi Nia , Frank Y. Shih

Image processing algorithms are finding various applications in manufacturing and materials industries such as identification of cracks in the fabricated samples, calculating the geometrical properties of the given microstructure, presence…

Computer Vision and Pattern Recognition · Computer Science 2021-09-03 Akshansh Mishra

CLIP (Contrastive Language-Image Pre-training) has attained great success in pattern recognition and computer vision. Transferring CLIP to downstream tasks (e.g. zero- or few-shot classification) is a hot topic in multimodal learning.…

Computer Vision and Pattern Recognition · Computer Science 2025-01-22 Zhipeng Ye , Feng Jiang , Qiufeng Wang , Kaizhu Huang , Jiaqi Huang

This report describes the experimental analysis of proposed underwater image enhancement algorithms based on partial differential equations (PDEs). The algorithms perform simultaneous smoothing and enhancement due to the combination of both…

Computer Vision and Pattern Recognition · Computer Science 2016-12-15 U. A. Nnolim

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

Image enhancement aims at processing an input image so that the visual content of the output image is more pleasing or more useful for certain applications. Although histogram equalization is widely used in image enhancement due to its…

Computer Vision and Pattern Recognition · Computer Science 2021-01-18 Xiangyuan Zhu , Xiaoming Xiao , Tardi Tjahjadi , Zhihu Wu , Jin Tang

Vision-Language Models such as CLIP exhibit strong zero-shot recognition capability by aligning images with textual concepts, yet they often underperform on multi-label recognition where multiple objects co-exist. A key bottleneck is that…

Computer Vision and Pattern Recognition · Computer Science 2026-05-26 Akang Wang , Xili Deng , Zhanxuan Hu , Yi Zhao , Yonghang Tai , Huafeng Li

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

Blind dehazed image quality assessment (BDQA), which aims to accurately predict the visual quality of dehazed images without any reference information, is essential for the evaluation, comparison, and optimization of image dehazing…

Computer Vision and Pattern Recognition · Computer Science 2025-02-05 Yirui Zeng , Jun Fu , Hadi Amirpour , Huasheng Wang , Guanghui Yue , Hantao Liu , Ying Chen , Wei Zhou

Underwater Image Enhancement (UIE) aims to improve the visual quality from a low-quality input. Unlike other image enhancement tasks, underwater images suffer from the unavailability of real reference images. Although existing works exploit…

Computer Vision and Pattern Recognition · Computer Science 2024-06-10 Shuaixin Liu , Kunqian Li , Yilin Ding , Qi Qi

Enhancement of human vision to get an insight to information content is of vital importance. The traditional histogram equalization methods have been suffering from amplified contrast with the addition of artifacts and a surprising…

Computer Vision and Pattern Recognition · Computer Science 2015-08-25 Muhammad Ali Qadar , Yan Zhaowen , Li Hua

Developing effective approaches to generate enhanced results that align well with human visual preferences for high-quality well-lit images remains a challenge in low-light image enhancement (LLIE). In this paper, we propose a…

Computer Vision and Pattern Recognition · Computer Science 2025-05-06 Xiaorui Zhao , Xinyue Zhou , Peibei Cao , Junyu Lou , Shuhang Gu

Image Aesthetics Assessment (IAA) is a challenging task due to its subjective nature and expensive manual annotations. Recent large-scale vision-language models, such as Contrastive Language-Image Pre-training (CLIP), have shown their…

Computer Vision and Pattern Recognition · Computer Science 2025-08-05 Liwu Xu , Jinjin Xu , Yuzhe Yang , Xilu Wang , Yijie Huang , Yaqian Li

Low-light image enhancement (LLE) remains challenging due to the unfavorable prevailing low-contrast and weak-visibility problems of single RGB images. In this paper, we respond to the intriguing learning-related question -- if leveraging…

Computer Vision and Pattern Recognition · Computer Science 2021-12-14 Dong Liang , Ling Li , Mingqiang Wei , Shuo Yang , Liyan Zhang , Wenhan Yang , Yun Du , Huiyu Zhou

Contrastive Learning (CL) has been proved to be a powerful self-supervised approach for a wide range of domains, including computer vision and graph representation learning. However, the incremental learning issue of CL has rarely been…

Machine Learning · Computer Science 2023-01-31 Cheng Ji , Jianxin Li , Hao Peng , Jia Wu , Xingcheng Fu , Qingyun Sun , Phillip S. Yu

Real-scene image super-resolution aims to restore real-world low-resolution images into their high-quality versions. A typical RealSR framework usually includes the optimization of multiple criteria which are designed for different image…

Computer Vision and Pattern Recognition · Computer Science 2022-07-27 Yukai Shi , Hao Li , Sen Zhang , Zhijing Yang , Xiao Wang

Low-Light Image Enhancement (LLIE) task aims at improving contrast while restoring details and textures for images captured in low-light conditions. HVI color space has made significant progress in this task by enabling precise decoupling…

Computer Vision and Pattern Recognition · Computer Science 2025-11-18 Xin Xu , Hao Liu , Wei Liu , Wei Wang , Jiayi Wu , Kui Jiang

Low-light images are commonly encountered in real-world scenarios, and numerous low-light image enhancement (LLIE) methods have been proposed to improve the visibility of these images. The primary goal of LLIE is to generate clearer images…

Computer Vision and Pattern Recognition · Computer Science 2024-09-24 Xu Wu , Zhihui Lai , Zhou Jie , Can Gao , Xianxu Hou , Ya-nan Zhang , Linlin Shen

High-quality underwater images are essential for both machine vision tasks and viewers with their aesthetic appeal.However, the quality of underwater images is severely affected by light absorption and scattering. Deep learning-based…

Computer Vision and Pattern Recognition · Computer Science 2025-07-10 Jiangzhong Cao , Zekai Zeng , Xu Zhang , Huan Zhang , Chunling Fan , Gangyi Jiang , Weisi Lin
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