US 12,339,367 B2
Detection device, determination method, and non-transitory computer-readable medium
Akira Tsuji, Tokyo (JP); Yoshimasa Ono, Tokyo (JP); Junichi Abe, Tokyo (JP); and Jiro Abe, Tokyo (JP)
Assigned to NEC CORPORATION, Tokyo (JP)
Appl. No. 17/912,945
Filed by NEC Corporation, Tokyo (JP)
PCT Filed Mar. 31, 2020, PCT No. PCT/JP2020/014844
§ 371(c)(1), (2) Date Sep. 20, 2022,
PCT Pub. No. WO2021/199291, PCT Pub. Date Oct. 7, 2021.
Prior Publication US 2023/0375709 A1, Nov. 23, 2023
Int. Cl. G06F 11/30 (2006.01); G01S 7/48 (2006.01); G01S 17/89 (2020.01)
CPC G01S 17/89 (2013.01) [G01S 7/4808 (2013.01)] 12 Claims
OG exemplary drawing
 
1. A detection device comprising:
at least one memory storing instructions, and
at least one processor configured to execute the instructions to;
acquire point cloud data indicating a distance from a measurement device to an object and luminance information obtained from reflected light of a beam emitted when the point cloud data is measured;
perform edge detection based on the luminance information; and
determine whether an area indicates a crack by using a shape of the area in which, of a plurality of points indicated by the point cloud data, points having luminance within a predetermined range of difference from luminance of a point detected as an edge are distributed
wherein the at least one processor is further configured to execute the instructions to generate at least two or more divided areas by dividing the area in which the points having the luminance within the predetermined range of difference from the luminance of the point detected as the edge are distributed, and
determine whether an area in which points contained in each divided area are distributed indicates a crack by using a shape of a set of points contained in the divided area.