Patent ID: 11948319
Assignee: NIPPON TELEGRAPH AND TELEPHONE CORPORATION
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 4:
5. The structure detection device according to claim 1, wherein the computer program instructions further perform to
divide the color information into RGB values,
divide the three-dimensional space into a plurality of blocks having a certain size for each of RGB values in a certain range depending on the detection-target structure among the RGB values,
calculate, for each of the divided blocks, frequency information about point group data on each of the RGB values, the point group data being present in each of the blocks,
extract, based on the calculated frequency information, a block corresponding to frequency information in a certain range depending on the detection-target structure among the divided blocks for each of the RGB values,
convert the frequency information calculated for the extracted block into original RGB values, and
extract, as three-dimensional point group data on the detection-target structure, three-dimensional point group data including the converted RGB values.