Structured light three-dimensional scanning method and system

Abstract

The invention relates to the technical field of three-dimensional scanning, and provides a structured light three-dimensional method and system. The method includes the steps that an FPGA outputs a structured light image to a projector, and sends a trigger signal to a camera every time the FPGA outputs one frame of the structured light image to the projector; after the camera receives the trigger signal, a photograph is taken in real time for projections generated by the projector; the camera transmits the taken photograph to a computer; the computer conducts three-dimensional reconstruction according to the photograph transmitted by the camera. According to the method and system, synchronization of the projector and the camera in the structured light three-dimensional scanning process is achieved based on the FPGA, the structured light image is generated in real time through the FPGA, and the image is directly output to the projector through a video interface for projection; meanwhile, synchronizing signals are sent to the camera, the camera is triggered to take the photograph for the projected structured light image, so that accurate synchronization of the projector and the camera is achieved, and then high-speed structured light three-dimensional scanning is finished.

Description

technical field [0001] The invention belongs to the technical field of three-dimensional scanning, and in particular relates to a structured light three-dimensional scanning method and system. Background technique [0002] In the fields of 3D vision, defect detection, and 3D measurement, structured light 3D scanning technology is playing an increasingly important role. At present, the structured light 3D scanning technology stores structured light pictures on the PC side and outputs the pictures to the projector for projection, and then the PC side controls the camera to take pictures, and performs 3D reconstruction through the data returned by the camera to calculate the scanned image. 3D information of an object. [0003] In the above-mentioned prior art, before the PC end triggers the camera to take pictures, the projection process of the structured light picture needs to be processed by multiple devices or equipment such as hard disk, memory, video memory, projector, et...

AI Technical Summary

Problems solved by technology

[0004] The purpose of the embodiments of the present invention is to provide a structured light three-dimensional scanning method, which aims to solve the problem that it is difficult to achieve precise synchronous control between the projector and the camera in the current structured light three-dimensional scanning technology

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