Linear structured light three-phase synchronous measurement system and method based on neural network and calibration method

Abstract

The invention discloses a linear structured light three-phase synchronous measurement system and method based on a neural network and a calibration method, and the system and method can quickly obtainthe three-dimensional data of the surface of an object through the principle of linear structured light. Meanwhile, the problem that a monocular camera is limited by the shielding of a complex structure on the surface of an object in the scanning process can be solved, noise caused by highlight spots generated by the material problem on the surface of the object can be removed to a certain extent, the method and device do not need to depend on a precise mechanical motion device, the calibration method is relatively simple, and field calibration can be achieved; and hardware is low in overallcost, the method and device are convenient to operate and easy to popularize.

Description

technical field [0001] The invention belongs to the field of visual measurement, and in particular relates to a three-phase synchronous measurement method for line structured light based on a neural network. Background technique [0002] Line-structured light vision measurement technology has the characteristics of high measurement accuracy, good real-time performance, and strong anti-interference ability. It has been widely used in the fields of 3D measurement, 3D reconstruction, reverse engineering and quality control. The line laser scanning measurement experimental device includes a line laser, a CCD camera, a high-precision electric translation stage, a translation stage controller, a computer, a calibration table, and the object to be measured; the line laser projects the line laser onto the surface of the object to be measured, and if the surface of the object When the depth changes, the imaging point on the photosensitive surface of the CCD will also move accordingly...

AI Technical Summary

Problems solved by technology

[0003] In the actual measurement, the traditional single-camera line structured light has the problem of surface occlusion when facing a more complex workpiece to be measured, resulting in incomplete measurement data, and there is a specular reflection phenomenon caused by the surface material of the measured object. The problem of data distortion caused by the problem, and the required precision mechanical movement structure is large in size, expensive, and not suitable for promotion. The internal and external parameters of the camera and the laser plane calibration process are also extremely complicated.

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