Patent ID: 11887250
Assignee: TADANO LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H  B | IPC B  G

Claim 0:
1. A guide display device of a crane, comprising:
a data processing section configured to calculate a representative point for each grid cell by using point group data acquired with a laser scanner by scanning a lifting cargo and a ground surface from above the lifting cargo, create a three-dimensional map based on the representative point, and update the three-dimensional map when a representative point calculated anew and an existing representative point are different from each other,
wherein when an occlusion region is generated in the three-dimensional map, the data processing section does not perform update for the occlusion region even when the representative point calculated anew and the existing representative point are different from each other, the occlusion region being a shadow of the lifting cargo.