公开(公告)号：US20210256679A1

公开(公告)日：2021-08-19

申请号：US17178243

申请日：2021-02-18

Applicant: Topcon Corporation

Inventor： Yasufumi FUKUMA ,  Mao ZAIXING ,  Satoshi YANOBE ,  Toshio YAMADA

IPC: G06T7/00 ,  G06T19/00 ,  G06K9/00 ,  G06K9/62 ,  G06T7/50

Abstract: The system 1 of an aspect example is used for building photogrammetry. The design data 141 includes virtual material information, which includes virtual material position information, on attributes for each virtual material of a virtual building. The physical material data 142, which includes physical material position data, is generated based on measured data of a physical building constructed based on the design data 141, relates to the attributes for each physical material. The material associating processor 151 generates pairs of virtual and physical materials by determining an association between the virtual and physical materials based on the virtual material position information and the physical material position data. For each of the pairs, the attribute associating processor 152 determines an association between the virtual material information and the physical material data in accordance with the attributes.