Three-dimensional visual sense reconstruction method

Abstract

The invention relates to the technology of structured light measurement and specifically relates to a three-dimensional visual sense reconstruction method, comprising following steps: establishing a three-dimensional measurement system; projecting a sine projection pattern with phase shift by a projector and capturing modulated sine pattern on a measured object surface with a camera in real time by use of a multi-frequency phase measuring profilometry structured light scan method, and calculating measured object surface phase information according to the multi-frequency phase measuring profilometry phase developing method; calculating the relative depth of the measured object by use of torsion resistance which changes with the surface depth of the measured object for the phase pattern in space, and realizing three-dimensional reconstruction according to the relative depth. The method can be applied in situations where complicated calibration cannot be realized due to condition limiting, calibration is difficult to carried out, or only low precision three-dimensional coordinate image reconstruction is required to quickly realize three-dimensional reconstruction; the method gives a solution to the problem that the present three-dimensional reconstruction method can not be carried out with insufficient calibrating data; the method has wide applications in the field of archaeology and three-dimensional data visualization.

Description

technical field [0001] The invention relates to structured light measurement technology, in particular to a three-dimensional vision reconstruction method. Background technique [0002] Structured light illumination (SLI) has gradually become a main three-dimensional measurement technology due to its advantages of reliability, accuracy and non-contact. A typical structured light measurement system includes a projector and a camera. The SLI algorithm first needs to calibrate the system to obtain calibration information. The calibration process begins with the projector projecting a coded structured light pattern onto a calibrated object surface, and at the same time The structured light pattern modulated on the surface of the object to be calibrated is captured by the camera in real time, and then the calibration information is calculated based on the image captured by the camera. If the calibration data is unknown, it is impossible for the structured light measurement system...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to provide a three-dimensional visual reconstruction method to solve the problem that the three-dimensional reconstruction method using the structured light method needs calibration information to obtain three-dimensional information, resulting in extremely low practicality

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