Results 31 to 40 of about 59,883 (284)

Autonomous Underwater Vehicles: Identifying Critical Issues and Future Perspectives in Image Acquisition

open access: yesSensors, 2023
Underwater imaging has been present for many decades due to its relevance in vision and navigation systems. In recent years, advances in robotics have led to the availability of autonomous or unmanned underwater vehicles (AUVs, UUVs).
Alberto Monterroso Muñoz   +4 more
doaj   +1 more source

Efficient Approach for OS-CFAR 2D Technique Using Distributive Histograms and Breakdown Point Optimal Concept applied to Acoustic Images [PDF]

open access: yes, 2019
In this work, a new approach to improve the algorithmic efficiency of the Order Statistic-Constant False Alarm Rate (OS-CFAR) applied in two dimensions (2D) is presented.
Acosta, Gerardo Gabriel   +3 more
core   +2 more sources

UIR-Net: A Simple and Effective Baseline for Underwater Image Restoration and Enhancement

open access: yesRemote Sensing, 2022
Because of the unique physical and chemical properties of water, obtaining high-quality underwater images directly is not an easy thing. Hence, recovery and enhancement are indispensable steps in underwater image processing and have therefore become ...
Xinkui Mei   +6 more
doaj   +1 more source

Compressive Underwater Sonar Imaging with Synthetic Aperture Processing [PDF]

open access: yesRemote Sensing, 2021
Synthetic aperture sonar (SAS) is a technique that acquires an underwater image by synthesizing the signal received by the sonar as it moves. By forming a synthetic aperture, the sonar overcomes physical limitations and shows superior resolution when compared with use of a side-scan sonar, which is another technique for obtaining underwater images ...
Ha-min Choi   +2 more
openaire   +2 more sources

Enhancing Underwater Images of a Bionic Horseshoe Crab Robot Using an Artificial Lateral Inhibition Network

open access: yesSensors
This paper proposes an underwater image enhancement technology based on an artificial lateral inhibition network (ALIN) generated in the compound eye of a bionic horseshoe crab robot (BHCR).
Yuke Ma   +4 more
doaj   +1 more source

Visual-Quality-Driven Learning for Underwater Vision Enhancement

open access: yes, 2018
The image processing community has witnessed remarkable advances in enhancing and restoring images. Nevertheless, restoring the visual quality of underwater images remains a great challenge.
Amaral, Henrique Grandinetti Barbosa   +3 more
core   +1 more source

Underwater Image Restoration via Adaptive Color Correction and Contrast Enhancement Fusion

open access: yesRemote Sensing, 2023
When light traverses through water, it undergoes influence from the absorption and scattering of particles, resulting in diminished contrast and color distortion within underwater imaging.
Weihong Zhang   +7 more
doaj   +1 more source

A Study on Panoramic Camera System of ROV Platform

open access: yesKongzhi Yu Xinxi Jishu
Unlike imaging in air, underwater panoramic imaging faces great challenges arising from water pressure and diminished light, necessitating special lens packaging and focused underwater illumination.
GUO Xu, TU Shaoping, XU Lei
doaj   +3 more sources

HARDWARE REALIZATION OF CANNY EDGE DETECTION ALGORITHM FOR UNDERWATER IMAGE SEGMENTATION USING FIELD PROGRAMMABLE GATE ARRAYS [PDF]

open access: yesJournal of Engineering Science and Technology, 2017
Underwater images raise new challenges in the field of digital image processing technology in recent years because of its widespread applications. There are many tangled matters to be considered in processing of images collected from water medium due to ...
ALEX RAJ S. M.   +2 more
doaj  

A Comparative Study of Various Edge Detection Techniques for Underwater Images

open access: yesJournal of Telecommunications and Information Technology, 2022
Nowadays, underwater image identification is a challenging task for many researchers focusing on various applications, such as tracking fish species, monitoring coral reef species, and counting marine species. Because underwater images frequently suffer
Ezmahamrul Afreen Awalludin   +4 more
doaj   +1 more source

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