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Matsuda, Asahi*; Takahashi, Satoru*; Kawabata, Kuniaki; Takemura, Fumiaki*; Ogasawara, Kei*
no journal, ,
In recent years, research of bleaching of coral based on change of underwater environment is important in order to know change of global environment. Currently, investigation of underwater is conducted by the diver. Therefore, several problems such as load for the diver and restriction of search area are occurred. To solve these problems, we are developing the underwater robot for investigating of coral reef for the wide and the long time. In here, to know the current situation of coral we consider the automatic extraction method of the coral based on texture analysis from image obtained by monitoring.
Matsuda, Asahi*; Okuda, Yudai*; Takahashi, Satoru*; Kawabata, Kuniaki; Ogasawara, Kei*
no journal, ,
Research of monitoring of corals plays an important role in observing the natural environment on a global scale. Identifying and detecting corals amongst other objects, including marine organisms, from an image taken undersea is a difficult task. Moreover, there are many types of corals and they cannot be easily categorized automatically. Currently, texture analysis is being pursued that solves the problem of detecting and recognizing corals from pictures taken undersea; Haralick 14 conditional equations are used to calculate the texture characteristics information based on the gray level co-occurrence matrix of 256 gradations and also to perform liner discrimination analysis on the characteristics information. In this paper, we propose one algorithm of texture analysis for discrimination of undersea objects, in order to detect the corals.