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Unmanned underwater image analysis for marine monitoring faces two key challenges: (i) degraded image quality due to light attenuation and (ii) hardware storage constraints limiting high-resolution image collection. Existing methods…

Computer Vision and Pattern Recognition · Computer Science 2024-11-25 Rita Pucci , Niki Martinel

The degradation in the underwater images is due to wavelength-dependent light attenuation, scattering, and to the diversity of the water types in which they are captured. Deep neural networks take a step in this field, providing autonomous…

Computer Vision and Pattern Recognition · Computer Science 2023-02-03 Rita Pucci , Christian Micheloni , Niki Martinel

Underwater images often exhibit poor quality, distorted color balance and low contrast due to the complex and intricate interplay of light, water, and objects. Despite the significant contributions of previous underwater enhancement…

Computer Vision and Pattern Recognition · Computer Science 2024-04-25 Weiwen Chen , Yingtie Lei , Shenghong Luo , Ziyang Zhou , Mingxian Li , Chi-Man Pun

Underwater images are fundamental for studying and understanding the status of marine life. We focus on reducing the memory space required for image storage while the memory space consumption in the collecting phase limits the time lasting…

Computer Vision and Pattern Recognition · Computer Science 2023-07-21 Rita Pucci , Niki Martinel

Underwater images normally suffer from degradation due to the transmission medium of water bodies. Both traditional prior-based approaches and deep learning-based methods have been used to address this problem. However, the inflexible…

Computer Vision and Pattern Recognition · Computer Science 2025-11-25 Shixuan Xu , Hao Qi , Wei Wang , Chao Huang , Jie Wen , Junyu Dong , Xinghui Dong

Due to the complex interplay of light absorption and scattering in the underwater environment, underwater images experience significant degradation. This research presents a two-stage underwater image enhancement network called the…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Han Mei , Kunqian Li , Shuaixin Liu , Chengzhi Ma , Qianli Jiang

Underwater images suffer from color casts and low contrast due to wavelength- and distance-dependent attenuation and scattering. To solve these two degradation issues, we present an underwater image enhancement network via medium…

Computer Vision and Pattern Recognition · Computer Science 2021-05-26 Chongyi Li , Saeed Anwar , Junhui Hou , Runmin Cong , Chunle Guo , Wenqi Ren

We present a wavelet-based dual-stream network that addresses color cast and blurry details in underwater images. We handle these artifacts separately by decomposing an input image into multiple frequency bands using discrete wavelet…

Computer Vision and Pattern Recognition · Computer Science 2022-04-28 Ziyin Ma , Changjae Oh

Underwater optical imaging is severely degraded by light absorption, scattering, and color distortion, hindering visibility and accurate image analysis. This paper presents an adaptive enhancement framework integrating illumination…

Computer Vision and Pattern Recognition · Computer Science 2025-03-06 Yuezhe Tian , Kangchen Yao , Xiaoyang Yu

Robust vision restoration of underwater images remains a challenge. Owing to the lack of well-matched underwater and in-air images, unsupervised methods based on the cyclic generative adversarial framework have been widely investigated in…

Computer Vision and Pattern Recognition · Computer Science 2023-10-10 Shuaizheng Yan , Xingyu Chen , Zhengxing Wu , Min Tan , Junzhi Yu

This paper addresses the challenging problem of image enhancement in complex underwater scenes by proposing a solution based on deep learning. The proposed method skillfully integrates two deep convolutional neural network models, VGG19 and…

Computer Vision and Pattern Recognition · Computer Science 2025-08-27 Aoqi Li , Yanghui Song , Jichao Dao , Chengfu Yang

In 3D reconstruction of underwater scenes, traditional methods based on atmospheric optical models cannot effectively deal with the selective attenuation of light wavelengths and the effect of suspended particle scattering, which are unique…

Graphics · Computer Science 2025-08-14 Jiachen Li , Guangzhi Han , Jin Wan , Yuan Gao , Delong Han

In this paper, we present an approach to image enhancement with diffusion model in underwater scenes. Our method adapts conditional denoising diffusion probabilistic models to generate the corresponding enhanced images by using the…

Computer Vision and Pattern Recognition · Computer Science 2023-09-08 Yi Tang , Takafumi Iwaguchi , Hiroshi Kawasaki

Underwater images taken from autonomous underwater vehicles (AUV's) often suffer from low light, high turbidity, poor contrast, motion-blur and excessive light scattering and hence require image enhancement techniques for object…

Computer Vision and Pattern Recognition · Computer Science 2025-07-25 Sreeraj Rajan Warrier , D Sri Harshavardhan Reddy , Sriya Bada , Rohith Achampeta , Sebastian Uppapalli , Jayasri Dontabhaktuni

Underwater image enhancement, as a pre-processing step to improve the accuracy of the following object detection task, has drawn considerable attention in the field of underwater navigation and ocean exploration. However, most of the…

Computer Vision and Pattern Recognition · Computer Science 2020-09-29 Long Chen , Zheheng Jiang , Lei Tong , Zhihua Liu , Aite Zhao , Qianni Zhang , Junyu Dong , Huiyu Zhou

Underwater image enhancement is an important low-level computer vision task for autonomous underwater vehicles and remotely operated vehicles to explore and understand the underwater environments. Recently, deep convolutional neural…

Computer Vision and Pattern Recognition · Computer Science 2021-05-06 Hao-Hsiang Yang , Kuan-Chih Huang , Wei-Ting Chen

Due to the absorption and scattering effects of the water, underwater images tend to suffer from many severe problems, such as low contrast, grayed out colors and blurring content. To improve the visual quality of underwater images, we…

Computer Vision and Pattern Recognition · Computer Science 2020-04-21 Hui Li , Xi Yang , ZhenMing Li , TianLun Zhang

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

Underwater monocular depth estimation serves as the foundation for tasks such as 3D reconstruction of underwater scenes. However, due to the influence of light and medium, the underwater environment undergoes a distinctive imaging process,…

Computer Vision and Pattern Recognition · Computer Science 2024-07-26 Jian Wang , Jing Wang , Shenghui Rong , Bo He

Underwater imaging plays a pivotal role in marine exploration and ecological monitoring. However, it faces significant challenges of limited transmission bandwidth and severe distortion in the aquatic environment. In this work, to achieve…

Image and Video Processing · Electrical Eng. & Systems 2025-09-30 Linwei Zhu , Junhao Zhu , Xu Zhang , Huan Zhang , Ye Li , Runmin Cong , Sam Kwong
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