Patent ID: 11897517
Assignee: KABUSHIKI KAISHA TOSHIBA
Field: Computer technology (Electrical engineering)
Classification: CPC B  G | IPC B  G

Claim 12:
13. A computer program product comprising a non-transitory computer readable medium including programmed instructions, the instructions causing a computer to execute:
acquiring a plurality of pieces of detection formation that is information including detection results at two-dimensional positions different from each other acquired by detection of an object by one or more detection devices through a transmission body, the plurality of pieces of detection information each including distortion due to the transmission body that exists between the detection devices and the object;
detecting a feature point from each of the plurality of pieces of detection information; and
estimating, by minimizing an error between a three-dimensional position corresponding to the feature point and a detection position of the feature point corrected based on an initial distortion map expressing distortion at each of the two-dimensional positions, a revised distortion map, the three-dimensional position, and the detection position, wherein
the initial distortion map is expressed at a resolution smaller than that of the pieces of detection information, and
the feature point is corrected by using the distortion corrected according to a difference between the resolution of the initial distortion map and the resolution of the pieces of detection information.