Mirror-like surface 3D shape measuring method based on Kinect and fringe reflection

Abstract

The invention discloses a mirror-like surface 3D shape measuring method based on Kinect and fringe reflection. The method is composed of two key parts: 3D point cloud data acquisition based on Kinect, and 3D measurement based on fringe reflection. The advantages of the method are as follows: (1) the traditional 3D measurement based on fringe reflection can be used to measure simple standard shapes only, while the mirror-like surface 3D shape measuring method based on Kinect and fringe reflection is not restricted by surface shapes to be measured, and can be used to measure objects of any surface shapes; and (2) in the mirror-like surface 3D shape measuring method based on Kinect and fringe reflection, preliminary 3D contour information of the surface of an object to be measured is obtained by collecting 3D morphology point cloud data of the surface of the object to be measured through Kinect, and the preliminary 3D contour information is used as an iteration datum plane of wave-front reconstruction in the traditional 3D measurement based on fringe reflection, so that the number of iterations is reduced greatly, and the speed of 3D surface shape reconstruction is increased.

Description

technical field [0001] The invention relates to a mirror-like three-dimensional surface shape measurement method combining Kinect and a fringe reflection method, in particular to a Kinect-based three-dimensional point cloud data acquisition principle and a fringe reflection three-dimensional measurement method. Background technique [0002] With the introduction and implementation of Industry 4.0, the intelligence and automation of the manufacturing industry has become the general trend of industrial development, and the acquisition of high-speed and high-precision three-dimensional data on the surface morphology of mirror-like objects is imminent. The three-dimensional measurement method is one of the key technologies to support intelligent production, realize human-computer interaction, and 3D technology. It is a high-tech integrating optical, mechanical, electrical and computer technologies. It provides the necessary three-dimensional data for intelligent production. [0...

AI Technical Summary

Problems solved by technology

[0007] Most mirror-like objects often have their particularity and complexity, and it is often difficult to meet the measurement requirements with a single measurement method

For example, the traditional three-dimensional stripe reflection measurement method is not only difficult to measure the three-dimensional shape of the surface of the complex mirror-like object, but also difficult to measure the color mirror-like surface; while the three-dimensional shape measurement method based on Kinect can quickly obtain the surface of the mirror-like object. Point cloud data and color information, but its measurement accuracy is relatively low

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