Results 31 to 40 of about 1,373,450 (321)

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

Application of Different Techniques for Underwater Image Processing- A Systematic Review

open access: yesIOP Conference Series: Materials Science and Engineering, 2020
The area of underwater image processing has gained huge attention among the researchers because of its wide application. Image processing is the approach of developing the input image quality so that it would be understood easily by users in future ...
R. Prasath, T. Kumanan
semanticscholar   +1 more source

A self-adaptive single underwater image restoration algorithm for improving graphic quality

open access: yesEURASIP Journal on Image and Video Processing, 2020
A high-quality underwater image is essential to many industrial and academic applications in the field of image processing and analysis. Unfortunately, underwater images frequently demonstrate poor visual quality of low contrast, blurring, darkness, and ...
Herng-Hua Chang   +3 more
doaj   +1 more source

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

Towards the Design and Implementation of an Image-Based Navigation System of an Autonomous Underwater Vehicle Combining a Color Recognition Technique and a Fuzzy Logic Controller

open access: yesSensors, 2021
This study proposes the development of an underwater object-tracking control system through an image-processing technique. It is used for the close-range recognition and dynamic tracking of autonomous underwater vehicles (AUVs) with an auxiliary light ...
Yu-Hsien Lin, Chao-Ming Yu, Chia-Yu Wu
doaj   +1 more source

SGUIE-Net: Semantic Attention Guided Underwater Image Enhancement With Multi-Scale Perception [PDF]

open access: yesIEEE Transactions on Image Processing, 2022
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 as reference,
Qi Qi   +5 more
semanticscholar   +1 more source

Underwater image quality enhancement of sea cucumbers based on improved histogram equalization and wavelet transform

open access: yesInformation Processing in Agriculture, 2017
Sea cucumbers usually live in an environment where lighting and visibility are generally not controllable, which cause the underwater image of sea cucumbers to be distorted, blurred, and severely attenuated.
Xi Qiao   +4 more
doaj   +1 more source

Single underwater image enhancement based on adaptive correction of channel differential and fusion

open access: yesFrontiers in Marine Science, 2023
Clear underwater images are necessary in many underwater applications, while absorption, scattering, and different water conditions will lead to blurring and different color deviations.
Zefeng Zhao   +6 more
doaj   +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

Pose Detection and control of multiple unmanned underwater vehicles using optical feedback [PDF]

open access: yes, 2014
This paper proposes pose detection and control algorithms in order to control the relative pose between two Unmanned Underwater Vehicles (UUVs) using optical feedback.
Barbaros Celikkol   +5 more
core   +3 more sources

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