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Three dimensional topographical data high accuracy conversion device, three dimensional topographical data high accuracy conversion method and program
Three dimensional topographical data high accuracy conversion device, three dimensional topographical data high accuracy conversion method and program
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机译:三维形貌数据高精度转换装置,三维形貌数据高精度转换方法及程序
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摘要
A three-dimensional topographical data precision improving device (10) removing noise that occurs in water regions of three-dimensional topographical data comprises a water region specifying unit (13) specifying the range of any one water region; a feature extraction unit (14) extracting feature values within any one water region that describe altitude distribution pattern of each local region in the three-dimensional topographical data; a segmentation unit (15) segmenting the whole range into candidate water regions and non-water regions by comparing the feature values of the specified water region with those of each point in the three-dimensional topographical data; a water region extraction unit (16) extracting water regions from the candidate water regions; and a plane creation unit (17) creating a corrected plane of each water region using the altitudes of the surrounding non-water regions and replacing the water region extracted by the water region extraction unit (16) with the corrected plane.
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