航空機リモートセンシングによる海上浮遊物の探索技術について

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This paper describes a system for the detection of floating targets as an application of the airborne remote sensing. This system named ADESR (The Automatic Detective System for SEARCH and RESQUE) works automatically as a maritime surveillance aid which keeps watching and detects the targets on the sea. The experimental system which consists of an infrared video camera, a visible ray video camera and a computer for the image processing had been developed to observe the surface of the sea from the airborne. The experiment of observation was carried out at the coast of Izu in Jan. 1997. On this experiment, a life raft was used as a target to detect. From the experiment, many useful data and images of the floating life raft at the sea were obtained. These data will provide useful clues for the future research and development on ADESR. The algorithm used in the image processing for detecting targets has three steps. The first step is the treatment of smoothing for the image. The madian filter is applied to the image for smoothing in this step. The second step is the treatment of thresholding to make a binary image. In the last step, the target image which corresponds to a life raft is gotten by the feature extraction and the pattern recognition. The algorithm to detect floating targets is considered to have reached the stage for practiacl use. However, the required time for getting target information is too long on the present algorithm. In order to overcome this problem, the improvement of system perfomance is being studied at present.
社団法人日本航海学会の論文
1998-03-25

航空機リモートセンシングによる海上浮遊物の探索技術について

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