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Underwater imaging is fundamentally challenging due to wavelength-dependent light attenuation, strong scattering from suspended particles, turbidity-induced blur, and non-uniform illumination. These effects impair standard cameras and make…

Computer Vision and Pattern Recognition · Computer Science 2026-01-16 Nick Truong , Pritam P. Karmokar , William J. Beksi

The preservation of aquatic biodiversity is critical in mitigating the effects of climate change. Aquatic scene understanding plays a pivotal role in aiding marine scientists in their decision-making processes. In this paper, we introduce…

Computer Vision and Pattern Recognition · Computer Science 2025-02-05 Basit Alawode , Iyyakutti Iyappan Ganapathi , Sajid Javed , Naoufel Werghi , Mohammed Bennamoun , Arif Mahmood

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

Availability of domain-specific datasets is an essential problem in object detection. Maritime vessel detection of inshore and offshore datasets is no exception, there is a limited number of studies addressing this need. For that reason, we…

Computer Vision and Pattern Recognition · Computer Science 2021-02-12 Bogdan Iancu , Valentin Soloviev , Luca Zelioli , Johan Lilius

Evidence from many low and middle income regions shows that microbial contamination in small scale drinking water systems often fluctuates rapidly, yet existing monitoring tools capture only fragments of this behaviour. Microscopic imaging…

Computation and Language · Computer Science 2025-12-09 Sepyan Purnama Kristanto , Lutfi Hakim , Hermansyah

In recent years, deep learning based methods have achieved promising performance in standard object detection. However, these methods lack sufficient capabilities to handle underwater object detection due to these challenges: (1) Objects in…

Computer Vision and Pattern Recognition · Computer Science 2020-05-26 Long Chen , Zhihua Liu , Lei Tong , Zheheng Jiang , Shengke Wang , Junyu Dong , Huiyu Zhou

Due to the uneven absorption of different light wavelengths in aquatic environments, underwater images suffer from low visibility and clear color deviations. With the advancement of autonomous underwater vehicles, extensive research has…

Computer Vision and Pattern Recognition · Computer Science 2025-03-18 Zengxi Zhang , Zeru Shi , Zhiying Jiang , Jinyuan Liu

We introduce a novel fine-grained dataset and benchmark, the Danish Fungi 2020 (DF20). The dataset, constructed from observations submitted to the Atlas of Danish Fungi, is unique in its taxonomy-accurate class labels, small number of…

Computer Vision and Pattern Recognition · Computer Science 2022-06-13 Lukáš Picek , Milan Šulc , Jiří Matas , Jacob Heilmann-Clausen , Thomas S. Jeppesen , Thomas Læssøe , Tobias Frøslev

Achieving subjective and objective quality assessment of underwater images is of high significance in underwater visual perception and image/video processing. However, the development of underwater image quality assessment (UIQA) is limited…

Computer Vision and Pattern Recognition · Computer Science 2022-04-20 Guojia Hou , Yuxuan Li , Huan Yang , Kunqian Li , Zhenkuan Pan

ImageNet-1K linear-probe transfer accuracy remains the default proxy for visual representation quality, yet it no longer predicts performance on scientific imagery. Across 46 modern vision model checkpoints, ImageNet top-1 accuracy explains…

Computer Vision and Pattern Recognition · Computer Science 2025-11-21 Samuel Stevens

Analyzing the ocean acoustic environment is a tricky task. Background noise and variable channel transmission environment make it complicated to implement accurate ship-radiated noise recognition. Existing recognition systems are weak in…

Audio and Speech Processing · Electrical Eng. & Systems 2024-02-20 Yuan Xie , Jiawei Ren , Ji Xu

Inspired by the biological visual system that selectively allocates attention to efficiently identify salient objects or regions, underwater salient instance segmentation (USIS) aims to jointly address the problems of where to look…

Computer Vision and Pattern Recognition · Computer Science 2025-07-18 Lin Hong , Xin Wang , Yihao Li , Xia Wang

In recent years, deep learning has made brilliant achievements in Environmental Microorganism (EM) image classification. However, image classification of small EM datasets has still not obtained good research results. Therefore, researchers…

Computer Vision and Pattern Recognition · Computer Science 2022-02-04 Peng Zhao , Chen Li , Md Mamunur Rahaman , Hao Xu , Hechen Yang , Hongzan Sun , Tao Jiang , Marcin Grzegorzek

Each year, underwater remotely operated vehicles (ROVs) collect thousands of hours of video of unexplored ocean habitats revealing a plethora of information regarding biodiversity on Earth. However, fully utilizing this information remains…

Computer Vision and Pattern Recognition · Computer Science 2023-02-23 R. Austin McEver , Bowen Zhang , Connor Levenson , A S M Iftekhar , B. S. Manjunath

Detecting camouflaged objects in underwater environments is crucial for marine ecological research and resource exploration. However, existing methods face two key challenges: underwater image degradation, including low contrast and color…

Computer Vision and Pattern Recognition · Computer Science 2025-10-15 Xinxin Huang , Han Sun , Junmin Cai , Ningzhong Liu , Huiyu Zhou

The recognition of coral species based on underwater texture images pose a significant difficulty for machine learning algorithms, due to the three following challenges embedded in the nature of this data: 1) datasets do not include…

Computer Vision and Pattern Recognition · Computer Science 2018-04-03 Anabel Gómez-Ríos , Siham Tabik , Julián Luengo , ASM Shihavuddin , Bartosz Krawczyk , Francisco Herrera

Underwater images play a crucial role in ocean research and marine environmental monitoring since they provide quality information about the ecosystem. However, the complex and remote nature of the environment results in poor image quality…

Computer Vision and Pattern Recognition · Computer Science 2025-10-14 Nilesh Jain , Elie Alhajjar

Underwater object detection for robot picking has attracted a lot of interest. However, it is still an unsolved problem due to several challenges. We take steps towards making it more realistic by addressing the following challenges.…

Computer Vision and Pattern Recognition · Computer Science 2022-07-05 Chongwei Liu , Haojie Li , Shuchang Wang , Ming Zhu , Dong Wang , Xin Fan , Zhihui Wang

Underwater images suffer severe degradation due to wavelength-dependent attenuation, scattering, and illumination non-uniformity that vary across water types and depths. We propose an unsupervised Domain-Invariant Visual Enhancement and…

Image and Video Processing · Electrical Eng. & Systems 2026-02-02 Rajini Makam , Sharanya Patil , Dhatri Shankari T M , Suresh Sundaram , Narasimhan Sundararajan

Underwater image enhancement is such an important low-level vision task with many applications that numerous algorithms have been proposed in recent years. These algorithms developed upon various assumptions demonstrate successes from…

Computer Vision and Pattern Recognition · Computer Science 2019-03-07 Risheng Liu , Xin Fan , Ming Zhu , Minjun Hou , Zhongxuan Luo