| 摘要 |
PURPOSE:To obtain extracted three-dimensional position information less in quantization error of input stereo pictures and immune from chained corresponding points detection error, by providing a temporarily set noticed point when corresponding points are detected three- dimensionally from stereo pictures, which are photographed at plural places, in an object space. CONSTITUTION:The output from an observation stereo picture input part A is inputted to an observation stereo picture feature point extracting part C. The output of another observation stereo picture input part B is inputted to an observation stereo picture feature point extracting part D. The coordinate signal of the temporarily set noticed point from a noticed point temporary setting part M is inputted to parts E and F, which operate forecasted projection points of the noticed point, individually to operate extents of feature respectively. Outputs of the operating part E and the feature point extracting part G are compared with each other by a part 114, which discriminates the degree of resemblance, to discriminate the degree of resemblance, and outputs of the operating part F and the feature point extracting part D are compared with each other by a part 114 to decide the degree of resemblance, and AND between two decision results is operated by an AND circuit part 115 to store temporarily set position information of the noticed point as three-dimensional position information in a three-dimensional position information recording part H.
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