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Underwater environments pose significant challenges due to the selective absorption and scattering of light by water, which affects image clarity, contrast, and color fidelity. To overcome these, we introduce OceanLens, a method that models…

图像与视频处理 · 电气工程与系统科学 2024-11-21 Rajini Makam , Dhatri Shankari T M , Sharanya Patil , Suresh Sundram

Underwater image enhancement algorithms have attracted much attention in underwater vision task. However, these algorithms are mainly evaluated on different data sets and different metrics. In this paper, we set up an effective and pubic…

图像与视频处理 · 电气工程与系统科学 2019-07-02 Hanyu Li , Jingjing Li , Wei Wang

Severe color casts, low contrast and blurriness of underwater images caused by light absorption and scattering result in a difficult task for exploring underwater environments. Different from most of previous underwater image enhancement…

图像与视频处理 · 电气工程与系统科学 2019-07-15 Xueyan Ding , Yafei Wang , Yang Yan , Zheng Liang , Zetian Mi , Xianping Fu

Due to the wavelength-dependent light attenuation, refraction and scattering, underwater images usually suffer from color distortion and blurred details. However, due to the limited number of paired underwater images with undistorted images…

图像与视频处理 · 电气工程与系统科学 2022-11-23 Qi Qi , Kunqian Li , Haiyong Zheng , Xiang Gao , Guojia Hou , Kun Sun

Consumer cameras are ubiquitous in aquatic sciences because they are affordable and easy to use, generating vast collections of underwater imagery for ecosystem surveys, monitoring, mapping, and animal behavior studies. Yet when color is…

图像与视频处理 · 电气工程与系统科学 2026-03-24 Derya Akkaynak , Michael S. Brown

Underwater photography presents significant inherent challenges including reduced contrast, spatial blur, and wavelength-dependent color distortions. These effects can obscure the vibrancy of marine life and awareness photographers in…

计算机视觉与模式识别 · 计算机科学 2026-02-06 Andreas Mentzelopoulos , Keith Ellenbogen

Underwater images are altered by the physical characteristics of the medium through which light rays pass before reaching the optical sensor. Scattering and wavelength-dependent absorption significantly modify the captured colors depending…

计算机视觉与模式识别 · 计算机科学 2024-09-13 Clémentin Boittiaux , Ricard Marxer , Claire Dune , Aurélien Arnaubec , Maxime Ferrera , Vincent Hugel

Decoders play significant roles in recovering scene depths. However, the decoders used in previous works ignore the propagation of multilevel lossless fine-grained information, cannot adaptively capture local and global information in…

计算机视觉与模式识别 · 计算机科学 2023-05-31 Fei Wang , Jun Cheng

Underwater image enhancement (UIE) is challenging since image degradation in aquatic environments is complicated and changing over time. Existing mainstream methods rely on either physical-model or data-driven, suffering from performance…

计算机视觉与模式识别 · 计算机科学 2024-01-30 Xiaowen Shi , Yuan-Gen Wang

When employing underwater vehicles for the autonomous inspection of assets, it is crucial to consider and assess the water conditions. These conditions significantly impact visibility and directly affect robotic operations. Turbidity can…

计算机视觉与模式识别 · 计算机科学 2026-03-31 Alexandre Cardaillac , Donald G. Dansereau

In the learning based video compression approaches, it is an essential issue to compress pixel-level optical flow maps by developing new motion vector (MV) encoders. In this work, we propose a new framework called Resolution-adaptive Flow…

计算机视觉与模式识别 · 计算机科学 2020-09-15 Zhihao Hu , Zhenghao Chen , Dong Xu , Guo Lu , Wanli Ouyang , Shuhang Gu

Context modeling is essential in learned image compression for accurately estimating the distribution of latents. While recent advanced methods have expanded context modeling capacity, they still struggle to efficiently exploit long-range…

图像与视频处理 · 电气工程与系统科学 2025-07-28 Yuqi Li , Haotian Zhang , Li Li , Dong Liu

In imaging systems, following acquisition, an image/video is transmitted or stored and eventually presented to human observers using different and often imperfect display devices. While the resulting quality of the output image may severely…

多媒体 · 计算机科学 2018-08-01 Yehuda Dar , Michael Elad , Alfred M. Bruckstein

Advancements in text-to-image generative AI with large multimodal models are spreading into the field of image compression, creating high-quality representation of images at extremely low bit rates. This work introduces novel components to…

图像与视频处理 · 电气工程与系统科学 2025-06-02 Cheng-Lin Wu , Hyomin Choi , Ivan V. Bajić

While humans can effortlessly transform complex visual scenes into simple words and the other way around by leveraging their high-level understanding of the content, conventional or the more recent learned image compression codecs do not…

图像与视频处理 · 电气工程与系统科学 2022-08-10 Shiyu Duan , Huaijin Chen , Jinwei Gu

Image compression constitutes a significant challenge amidst the era of information explosion. Recent studies employing deep learning methods have demonstrated the superior performance of learning-based image compression methods over…

计算机视觉与模式识别 · 计算机科学 2024-05-07 Yuefeng Zhang , Kai Lin

In the field of underwater vision research, image matching between the sonar sensors and optical cameras has always been a challenging problem. Due to the difference in the imaging mechanism between them, which are the gray value, texture,…

计算机视觉与模式识别 · 计算机科学 2021-08-30 Xiaoteng Zhou , Changli Yu , Xin Yuan , Citong Luo

Underwater communication is essential for environmental monitoring, marine biology research, and underwater exploration. Traditional underwater communication faces limitations like low bandwidth, high latency, and susceptibility to noise,…

计算机视觉与模式识别 · 计算机科学 2024-08-27 Weilong Chen , Wenxuan Xu , Haoran Chen , Xinran Zhang , Zhijin Qin , Yanru Zhang , Zhu Han

Underwater image enhancement has attracted much attention due to the rise of marine resource development in recent years. Benefit from the powerful representation capabilities of Convolution Neural Networks(CNNs), multiple underwater image…

计算机视觉与模式识别 · 计算机科学 2021-04-14 Yudong Wang , Jichang Guo , Huan Gao , Huihui Yue

Low-light images frequently occur due to unavoidable environmental influences or technical limitations, such as insufficient lighting or limited exposure time. To achieve better visibility for visual perception, low-light image enhancement…

计算机视觉与模式识别 · 计算机科学 2024-02-27 Shilv Cai , Liqun Chen , Sheng Zhong , Luxin Yan , Jiahuan Zhou , Xu Zou