US 12,118,670 B2
Method and device for generating digital model
Xiaojun Chen, Zhejiang (CN); Chao Ma, Zhejiang (CN); and Huiquan Zhang, Zhejiang (CN)
Assigned to SHINING 3D TECHNOLOGY CO., LTD., Zhejiang (CN)
Appl. No. 18/014,758
Filed by SHINING 3D TECH CO., LTD., Zhejiang (CN)
PCT Filed Jul. 6, 2021, PCT No. PCT/CN2021/104753
§ 371(c)(1), (2) Date Jan. 6, 2023,
PCT Pub. No. WO2022/007792, PCT Pub. Date Jan. 13, 2022.
Claims priority of application No. 202010641908.6 (CN), filed on Jul. 6, 2020.
Prior Publication US 2023/0298271 A1, Sep. 21, 2023
Int. Cl. G06T 17/20 (2006.01); G06T 7/10 (2017.01)
CPC G06T 17/205 (2013.01) [G06T 7/10 (2017.01); G06T 2207/20016 (2013.01); G06T 2207/20084 (2013.01); G06T 2207/20221 (2013.01)] 18 Claims
OG exemplary drawing
 
1. A method for generating a digital model, comprising:
acquiring integrated point cloud data of a measured object based on at least one set of measured object images of the measured object;
performing mesh processing on the integrated point cloud data with at least two different resolutions so as to obtain at least two mesh models of the measured object; and
integrating the at least two mesh models so as to generate an integrated mesh model with multiple resolutions;
wherein the step of performing the mesh processing on the integrated point cloud data with at least two different resolutions so as to obtain at least two mesh models of the measured object comprises:
performing mesh processing on the integrated point cloud data with a first resolution to obtain a first mesh model of the measured object;
determining a to-be-adjusted area in the first mesh model;
determining original point cloud data falling within the to-be-adjusted area from the integrated point cloud data and dividing the original point cloud data falling within the to-be-adjusted area from the integrated point cloud data; and
performing mesh processing, with a second resolution, on the original point cloud data falling within the to-be-adjusted area to obtain a second mesh model of the to-be-adjusted area, wherein the integrated point cloud data comprises point cloud data in the to-be-adjusted area;
the step of performing mesh processing on the integrated point cloud data with the first resolution to obtain the first mesh model of the measured object comprises:
in a case that part of original point clouds are obtained via scanning, starting mesh processing on the existing part of the original point cloud data;
in a later scanning process, performing mesh processing on the original point cloud data newly generated via scanning in an incremental manner based on previous meshes, so that a first mesh model of a measured object is obtained.