Method for building a three-dimensional model and apparatus thereof

摘要

A method to build a 3D model for a physical object includes the following steps. First, depth information of a plurality of images is converted into a plurality of 3D point clouds. Then, the motion parameters of the camera to gather each image relative to a previous image are determined according to the 3D point clouds. Next, a registration energy estimate value of each image's 3D point cloud, as being integrated into a previous image's 3D point cloud, is determined according to corresponding motion parameters. Then, the motion parameters are varied to minimize the estimate value. An optimal camera path is determined according to the varied motion parameters. Finally, a 3D model of the physical object is built according the optimal camera path.

主权项

1. A method to build a 3D model for a physical object, comprising:
converting depth information of a plurality of images into a plurality of 3D point clouds, wherein the images are gathered by a camera surrounding the physical object to sequentially photograph the physical object; respectively calculating motion parameters of the camera gathering each of the images relative to gathering a previous image according to the 3D point clouds; calculating a registration energy estimate value of the 3D point cloud for each of the images as being integrated into the 3D point cloud of the previous image according to a corresponding motion parameter; varying the motion parameters to minimize the registration energy estimate value; determining an optimal camera path according to the varied motion parameters; and building a 3D model of the physical object according the optimal camera path.