Results 21 to 30 of about 20,966 (189)

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

Quantum-inspired computational imaging [PDF]

open access: yes, 2018
Computational imaging combines measurement and computational methods with the aim of forming images even when the measurement conditions are weak, few in number, or highly indirect.
Altmann, Yoann   +5 more
core   +2 more sources

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 Polarization Imaging Recovery Based on Polarimetric Residual Dense Network

open access: yesIEEE Photonics Journal, 2022
Application of deep-learning to polarization imaging technology for image restoration has led to many technological breakthroughs, especially in underwater image recovery and recognition.
Yanfa Xiang   +6 more
doaj   +1 more source

A new 3-D modelling method to extract subtransect dimensions from underwater videos [PDF]

open access: yes, 2012
Underwater video transects have become a common tool for quantitative analysis of the seafloor. However a major difficulty remains in the accurate determination of the area surveyed as underwater navigation can be unreliable and image scaling does not ...
Fillinger, Laura, Funke, Tobias
core   +2 more sources

An Experimental-Based Review of Image Enhancement and Image Restoration Methods for Underwater Imaging

open access: yesIEEE Access, 2019
Underwater images play a key role in ocean exploration but often suffer from severe quality degradation due to light absorption and scattering in water medium.
Yan Wang   +5 more
doaj   +1 more source

Underwater Image Clarification Based on Double-Opponency Light Estimation and Red Channel Prior

open access: yesIEEE Access, 2023
Underwater images typically exhibit color bias and low contrast resulting from the absorption and scattering effects of light propagating in water.
Jing Qian, Bin Kong, Jing Yang
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

Unscreened water-diversion pipes pose an entrainment risk to the threatened green sturgeon, Acipenser medirostris. [PDF]

open access: yes, 2014
Over 3,300 unscreened agricultural water diversion pipes line the levees and riverbanks of the Sacramento River (California) watershed, where the threatened Southern Distinct Population Segment of green sturgeon, Acipenser medirostris, spawn.
Bandeh, Hossein   +9 more
core   +4 more sources

Underwater Image Restoration Based on Image Fusion

open access: yesInternational Journal of Recent Technology and Engineering (IJRTE), 2020
The haziness in underwater images occurs due to two major phenomena namely absorption and scattering of light. Hence, we have proposed an image fusion-based approach to improve the visibility of images obtained underwater. The proposed method uses a single hazy image.
Mr.B. Arivuselvam   +3 more
openaire   +1 more source

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