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This paper presents an image-based position measurement of underwater objects using a low-cost maritime mobile robot with a monocular camera. Visual recognition of distant underwater objects is possible in the water with high transparency, for example, in the coastal sea area of Okinawa prefecture, Japan. In this paper, we apply the proposed method to estimate the position of an old anchor that is...
We have been developing the underwater robot which can be used for environmental protection and research work in the coastal sea area of Okinawa prefecture. It is difficult to get the global position of the underwater robot, because GPS does not work in water. Visual recognition of distant underwater objects is possible in the water high transparency, for example, in the coastal sea area of Okinawa,...
In recent years, it says that the number of the coral decreases by the change in the marine ecosystem, the change of marine environment and increase of crown-of-thorns starfish. Therefore, the research and preservation of coral is necessary urgently. Then, authors have been developing the device which is called the stationary sensor node to observe underwater environment with wide range for a long...
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