3D tracking and measurement method of moving objects by 2D code

Abstract

The present invention relates to the field of the optical 3D contour measuring technology. Two video cameras are used to collect the image of some objects and the two CCD cameras are in some certain distance, the 3D measurement is performed based on double-eye stereo visual principle. The measured object is marked with the geographic shapes in different color and in specific range order so that matching point can be found out in the images the two CCD cameras obtain. The position of some point in the 3D space is calculated according to the parallex of a matching point in two images. It can beused to track moving human body and has wide application in 3D motion picture production, selection and training of athlete, etc.

Description

technical field The invention relates to the technical field of optical three-dimensional profile measurement. It is a method for three-dimensional tracking and measurement of moving objects with two-dimensional codes. technical background Using the principle of binocular stereo vision for three-dimensional observation and measurement has been extensively researched and applied. Many 3D observation and measurement methods have been proposed. Chinese patent CN1010466A discloses that a series of light strip patterns with single-value codes are projected onto the target at a certain inclination angle with the optical axis of the camera, and the pixels in the camera receive the reflections reflected by the target. Encode the light signal. By appropriate selection and scaling of the coordinate system, and associated light-strip encoding, for each pixel element, a coordinate of that pixel is simply subtracted from the binary-coded light signal refle...

AI Technical Summary

Problems solved by technology

This method can only track the movement of simple objects, and cannot measure some complex moving objects, such as the movement of the human body.

Images