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Underwater robots play an important role in oceanic geological exploration, resource exploitation, ecological research, and other fields. However, the visual perception of underwater robots is affected by various environmental factors. The…

Image and Video Processing · Electrical Eng. & Systems 2021-01-08 Xuelei Chen , Pin Zhang , Lingwei Quan , Chao Yi , Cunyue Lu

Aiming at the problems of color distortion, blur and excessive noise of underwater image, an underwater image enhancement algorithm based on structure-texture reconstruction is proposed. Firstly, the color equalization of the degraded image…

Image and Video Processing · Electrical Eng. & Systems 2020-04-14 Sen Lin , Kaichen Chi

Capsule networks aim to parse images into a hierarchy of objects, parts and relations. While promising, they remain limited by an inability to learn effective low level part descriptions. To address this issue we propose a way to learn…

Computer Vision and Pattern Recognition · Computer Science 2021-02-22 Sara Sabour , Andrea Tagliasacchi , Soroosh Yazdani , Geoffrey E. Hinton , David J. Fleet

In an underwater scene, wavelength-dependent light absorption and scattering degrade the visibility of images, causing low contrast and distorted color casts. To address this problem, we propose a convolutional neural network based image…

Computer Vision and Pattern Recognition · Computer Science 2018-07-11 Saeed Anwar , Chongyi Li , Fatih Porikli

Underwater images are often affected by complex degradations such as light absorption, scattering, color casts, and artifacts, making enhancement critical for effective object detection, recognition, and scene understanding in aquatic…

Computer Vision and Pattern Recognition · Computer Science 2025-05-27 Afrah Shaahid , Muzammil Behzad

We present a novel underwater image enhancement method termed SCNet to improve the image quality meanwhile cope with the degradation diversity caused by the water. SCNet is based on normalization schemes across both spatial and channel…

Computer Vision and Pattern Recognition · Computer Science 2022-03-15 Zhenqi Fu , Xiaopeng Lin , Wu Wang , Yue Huang , Xinghao Ding

Underwater image enhancement has become an attractive topic as a significant technology in marine engineering and aquatic robotics. However, the limited number of datasets and imperfect hand-crafted ground truth weaken its robustness to…

Computer Vision and Pattern Recognition · Computer Science 2022-11-22 Di Wang , Long Ma , Risheng Liu , Xin Fan

Images captured underwater are often characterized by low contrast, color distortion, and noise. To address these visual degradations, we propose a novel scheme by constructing an adaptive color and contrast enhancement, and denoising…

Computer Vision and Pattern Recognition · Computer Science 2021-08-03 Xinjie Li , Guojia Hou , Kunqian Li , Zhenkuan Pan

Images captured underwater often suffer from suboptimal illumination settings that can hide important visual features, reducing their quality. We present a novel single-image low-light underwater image enhancer, L^2UWE, that builds on our…

Computer Vision and Pattern Recognition · Computer Science 2020-11-09 Tunai Porto Marques , Alexandra Branzan Albu

Underwater image enhancement plays a crucial role in providing reliable visual information for underwater platforms, since strong absorption and scattering in water-related environments generally lead to image quality degradation. Existing…

Computer Vision and Pattern Recognition · Computer Science 2026-03-18 Yiqiang Zhou , Yifan Chen , Zhe Sun , Jijun Lu , Ye Zheng , Xuelong Li

Images acquired during underwater activities suffer from environmental properties of the water, such as turbidity and light attenuation. These phenomena cause color distortion, blurring, and contrast reduction. In addition, irregular…

Image and Video Processing · Electrical Eng. & Systems 2022-08-09 Claudio D. Mello , Bryan U. Moreira , Paulo J. O. Evald , Paulo L. Drews , Silvia S. Botelho

Underwater scenes intrinsically involve degradation problems owing to heterogeneous ocean elements. Prevailing underwater image enhancement (UIE) methods stick to straightforward feature modeling to learn the mapping function, which leads…

Computer Vision and Pattern Recognition · Computer Science 2024-09-10 Zhixiong Huang , Xinying Wang , Chengpei Xu , Jinjiang Li , Lin Feng

Majority of deep learning methods utilize vanilla convolution for enhancing underwater images. While vanilla convolution excels in capturing local features and learning the spatial hierarchical structure of images, it tends to smooth input…

Computer Vision and Pattern Recognition · Computer Science 2024-10-01 Song Zhang , Daoliang Li , Ran Zhao

Underwater images often suffer from various issues such as low brightness, color shift, blurred details, and noise due to light absorption and scattering caused by water and suspended particles. Previous underwater image enhancement (UIE)…

Computer Vision and Pattern Recognition · Computer Science 2024-04-30 Zheng Cheng , Guodong Fan , Jingchun Zhou , Min Gan , C. L. Philip Chen

Underwater image enhancement (UIE) techniques aim to improve visual quality of images captured in aquatic environments by addressing degradation issues caused by light absorption and scattering effects, including color distortion, blurring,…

Computer Vision and Pattern Recognition · Computer Science 2025-08-07 Zheng Cheng , Wenri Wang , Guangyong Chen , Yakun Ju , Yihua Cheng , Zhisong Liu , Yanda Meng , Jintao Song

Analyzing and visualizing scientific ensemble datasets with high dimensionality and complexity poses significant challenges. Dimensionality reduction techniques and autoencoders are powerful tools for extracting features, but they often…

Machine Learning · Computer Science 2026-01-19 Hamid Gadirov , Lennard Manuel , Steffen Frey

The spectral features of water clusters provide important information on their structure and dynamics and can assist in deciphering the nature of the local environment of aqueous solutions in a variety of different conditions. Accurately…

Computational Physics · Physics 2026-03-11 T. Baird , R. Vuilleumier , S. Bonella

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

This paper proposes a novel deep subspace clustering approach which uses convolutional autoencoders to transform input images into new representations lying on a union of linear subspaces. The first contribution of our work is to insert…

Computer Vision and Pattern Recognition · Computer Science 2020-01-24 Mohsen Kheirandishfard , Fariba Zohrizadeh , Farhad Kamangar

One of the main challenges in deep learning-based underwater image enhancement is the limited availability of high-quality training data. Underwater images are difficult to capture and are often of poor quality due to the distortion and…

Computer Vision and Pattern Recognition · Computer Science 2025-07-15 Alzayat Saleh , Marcus Sheaves , Dean Jerry , Mostafa Rahimi Azghadi