Shenzhen University

Xiang Peng

Xiaoli Liu

Qijian Tang

Yang Yang

Hailong Chen

Dong He

Yupei Miao

Ameng Li

Yifan Liao

A high-accuracy three-dimensional reconstruction method and system, a computer device, and a storage medium are provided. The method includes: performing calibration on an imaging apparatus; calculating each unidirectional absolute phase distribution diagram of a planar target; establishing an imaging apparatus coordinate system, and fitting corresponding epipolar lines in a normalization plane; calculating intersections between the corresponding planar target and rays formed by points on an epipolar line and an optical center of the imaging apparatus, fitting a projection beam, and establishing a projection mapping coefficient table; and projecting a pattern to an object under test, acquiring an object image of the object under test by using the imaging apparatus, calculating and searching for projection mapping coefficients corresponding to absolute phases in the object image, and calculating corresponding spatial three-dimensional point coordinates by using the projection mapping coefficients.

High-accuracy three-dimensional reconstruction method and system, computer device, and storage medium

Disclosed in the embodiments of the present disclosure are a method for planning three-dimensional scanning viewpoint, a device for planning three-dimensional scanning viewpoint and a computer readable storage medium. After a low-precision digitalized model of an object to be scanned is acquired, viewpoint planning calculation is performed, on the basis of a viewpoint planning algorithm, on point cloud data in the low-precision digitalized model, and then the positions and line-of-sight directions of a plurality of viewpoints in space are calculated when a three-dimensional sensor needs to perform three-dimensional scanning on said object. Calculating viewpoints of a three-dimensional sensor by means of a viewpoint planning algorithm can effectively improve the accuracy and scientific nature of sensor posture determination, greatly improving the efficiency of viewpoint planning, and reducing the time consumed in the whole three-dimensional measurement process.

Method for planning three-dimensional scanning viewpoint, device for planning three-dimensional scanning viewpoint, and computer readable storage medium

The present invention relates to the technical field of three-dimensional imaging, and provides a human body three-dimensional imaging method and system, and a method for simultaneously calibrating multiple control base stations. According to the present invention, provided that the effective view fields of the various distributed sensors are subjected to no spatial overlap, the structural parameters and the global matching parameters of all the sensors are calibrated; a corresponding point search method utilizing phase shift in combination with the random structured light reduces image collection time for acquiring single view point depth data; by using the concept of time reuse, the overall data collection time is shortened, and meanwhile the design of distributed computation enhances the computing capability of the entire system; automatic matching of the depth data of different sensors is implemented according to the calibrated global matching parameters of the different sensors.

Human body three-dimensional imaging method and system

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Guangdong, China

Xiang Peng