Method and apparatus for automated data acquisition and three-dimensional modeling based on rotary table

Abstract

The invention relates to a method and apparatus for automated data acquisition and three-dimensional modeling based on a rotary table. The method that is used for three-dimensional modeling of an object placed on a rotary table by using a camera array comprises: initial projection matrixes of all cameras in the camera array relative to the rotation center of the rotary table are obtained; the rotary table is controlled to rotate around the rotation center at a plurality of angles and rotation projection matrixes of all cameras and a rotation shooting picture of the object are obtained at each rotation angle; according to the rotation projection matrixes and the rotation shooting pictures, three-dimensional modeling is carried out by using an SIFT feature to obtain a three-dimensional model of the object. With the precise rotation angle information of the rotary table, the image texture requirement is reduced; instability caused by image-feature-based estimation of internal and external parameters of the camera during the traditional image-based three-dimensional modeling process can be eliminated; and the real scale can be extracted and automatic and accurate three-dimensional reconstruction of objects can be realized. The method and apparatus has characteristics of fast speed, high pertinence, low cost, and small splicing accumulation error.

Description

technical field [0001] The invention relates to the technical field of computer vision, in particular to a method and device for automatic data collection and three-dimensional modeling based on a turntable. Background technique [0002] As the data of points and other information collections, the 3D model can be generated manually or according to a certain algorithm. Today, 3D models are used in various fields. They are used in the medical industry to make precise models of organs; the film industry uses them for moving characters, objects, and realistic films; the video game industry uses them as resources in computers and video games; and the scientific field uses them as precise models of chemical compounds the architectural industry uses them to demonstrate proposed building or landscape representations; the engineering community uses them to design new equipment, vehicles, structures, and other applications; [0003] At present, there are generally three methods for ...

AI Technical Summary

Problems solved by technology

However, the stability of this method greatly depends on the texture characteristics of the image surface. When the surface of the object shows weak texture, the method will fail, and the object cannot be effectively modeled in 3D

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