Results 31 to 40 of about 26,334 (285)

A holographic system for subsea recording and analysis of plankton and other marine particles [PDF]

open access: yes, 2003
We report here details of the design, development, initial testing and field-deployment of the HOLOMAR system for in-situ subsea holography and analysis of marine plankton and nonliving particles.
Alexander, S   +18 more
core   +1 more source

The Hierarchic treatment of marine ecological information from spatial networks of benthic platforms [PDF]

open access: yes, 2020
Measuring biodiversity simultaneously in different locations, at different temporal scales, and over wide spatial scales is of strategic importance for the improvement of our understanding of the functioning of marine ecosystems and for the conservation ...
Aguzzi, Jacopo   +6 more
core   +2 more sources

Underwater image enhancement with image colorfulness measure [PDF]

open access: yesSignal Processing: Image Communication, 2021
Abstract 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 proposed a novel enhancement model, which is a trainable end-to-end neural model.
Xi Yang, Hui Li, Rong Chen
openaire   +1 more source

Enhancement of Underwater Video Mosaics for Post-Processing [PDF]

open access: yes, 2007
Mosaics of seafloor created from still images or video acquired underwater have proved to be useful for construction of maps of forensic and archeological sites, species\u27 abundance estimates, habitat characterization, etc.
Gu, Fan, Rzhanov, Yuri
core   +3 more sources

An In-Depth Survey of Underwater Image Enhancement and Restoration

open access: yesIEEE Access, 2019
Images taken under water usually suffer from the problems of quality degradation, such as low contrast, blurring details, color deviations, non-uniform illumination, etc.
Miao Yang   +5 more
doaj   +1 more source

Real-time Model-based Image Color Correction for Underwater Robots

open access: yes, 2020
Recently, a new underwater imaging formation model presented that the coefficients related to the direct and backscatter transmission signals are dependent on the type of water, camera specifications, water depth, and imaging range.
Li, Alberto Quattrini, Roznere, Monika
core   +1 more source

A Survey of Restoration and Enhancement for Underwater Images

open access: yesIEEE Access, 2019
Images captured underwater usually suffer from color distortion, detail blurring, low contrast, and a bluish or greenish tone due to light scattering and absorption in the underwater medium, which in turn the visibility is adversely affected by these ...
Weidong Zhang   +5 more
doaj   +1 more source

Underwater Image Enhancement Based on Adaptive Color Correction and Improved Retinex Algorithm

open access: yesIEEE Access, 2023
In order to solve the problems about color distortion and low contrast of underwater images, we propose an underwater image enhancement algorithm that combines adaptive color correction with improved Retinex algorithm.
Shijie Lin   +4 more
doaj   +1 more source

Investigating submerged morphologies by means of the low-budget “GeoDive” method (high resolution for detailed 3D reconstruction and related measurements) [PDF]

open access: yes, 2018
Geophysical methods allow to collect geological data on lake and sea bottoms and characterize large areas, even at high depths, but with high costs.
Crognale, Jacopo   +2 more
core   +1 more source

Underwater image enhancement network based on visual Transformer with multiple loss functions fusion

open access: yes智能科学与技术学报, 2022
Due to the absorption and scattering of light in water, the images captured by underwater robots suffer from color distortion and reduced contrast.Aiming at alleviating the quality degradation phenomenon of underwater images, an underwater image ...
Xiaofeng CONG, Jie GUI, Jun ZHANG
doaj  

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