Results 261 to 270 of about 1,373,450 (321)
Some of the next articles are maybe not open access.
Digital image processing of underwater images
2006 IEEE US/EU Baltic International Symposium, 2006We describe the motivation and some preliminary results of a long term project to monitor a coral reef using computer vision. We show the calculation of a background image of coral without fish by median filtering of an image sequence. We illustrate the extraction of fish from images and show that a texture can pair examples of fish species from ...
openaire +1 more source
Image Processing and Sparse Resolution for Underwater Imaging
Applied Mechanics and Materials, 2014Super-resolution is useful for weak-target image reconstruction. The technique, however, is not yet suitable for underwater imaging implementation due to the complexity of underwater environment. In this paper, an image processing and sparse super-resolution is proposed to make it more suitable for underwater images. In this paper, image processing and
Xiao Dan Sun, Zhuo Zhang, Xue Wu Zhang
openaire +1 more source
The Underwater Bubbles Image’s Acquisition and Processing
Applied Mechanics and Materials, 2010Machine Vision was used to observer and measure the underwater bubbles. There are several ways been taken to solve many difficulties in the process of the acquisition to get the image. Such as the equipment selection, the light sources selection, the approach to images and the feature extraction of the image.
Peng Cheng +3 more
openaire +1 more source
IEEE Signal Processing Letters, 2023
Due to the absorption and scattering of light, underwater captured images often face serious quality degradation issues. In this letter, we propose to cope with the aforementioned issues via piecewise color correction and dual prior optimized contrast ...
W. Zhang +4 more
semanticscholar +1 more source
Due to the absorption and scattering of light, underwater captured images often face serious quality degradation issues. In this letter, we propose to cope with the aforementioned issues via piecewise color correction and dual prior optimized contrast ...
W. Zhang +4 more
semanticscholar +1 more source
New approach for underwater imaging and processing
SPIE Proceedings, 2014Due to the absorptive and scattering nature of water, the characteristic of underwater image is different with it in the air. Underwater image is characterized by their poor visibility and noise. Getting clear original image and image processing are two important problems to be solved in underwater clear vision area.
Yanan Wen +5 more
openaire +1 more source
Underwater Object Detection Using Image Processing
2021This project describes the architecture and design of an improved configurable underwater object detection using image processing. The vision based method for detecting the objects under water is carried out using Yolo based convolutional neural network (CNN). YOLO (You Only Look Once) is a real time object detection algorithm. This algorithm applies a
Babu, P. Srinivas +4 more
openaire +1 more source
Image processing of underwater multispectral imagery
IEEE Journal of Oceanic Engineering, 2003Capturing in situ fluorescence images of marine organisms presents many technical challenges. The effects of the medium, as well as the particles and organisms within it, are intermixed with the desired signal. Methods for extracting and preparing the imagery for analysis are discussed in reference to a novel underwater imaging system called the low ...
openaire +1 more source
Localization of autonomous underwater vehicles by sonar image processing
ELMAR 2007, 2007A major percentage of underwater operations takes place in structured enviroments. This article presents a low cost way for underwater vehicle positionig in places like pools, tanks, water towers etc. The developed application calculates a 2D position using only a simple scanning sonar and a digital compass. An user interface has also been designed for
Eškinja, Zdravko +2 more
openaire +2 more sources
Enhancing Underwater Image Quality through Image Processing
Underwater images find application in various fields, like marine research, inspection of aquatic habitat, underwater surveillance, identification of minerals, and more. Longer wavelengths are absorbed by water at greater depths. Due to the greater wavelength, red is absorbed and the images seem primarily bluish-green. Images suffer greatly as a resultMamatha, R. +4 more
openaire +1 more source
Image processing techniques for underwater acoustic image enhancement
The Journal of the Acoustical Society of America, 2003Underwater acoustic images are often dominated by noise, which obscures signals of interest. When the spatial character of the noise differs from that of the signal, image processing techniques can be employed to enhance the image. In underwater acoustic time-bearing displays, the signals of interest form continuous tracks, while noise often takes on ...
openaire +1 more source