光栅投影双目立体视觉测量方法的研究

Acquisition Method Research of Parallel Stereo Binocular Vision Based on line Fringe Projection

为实现逆向工程的实物数据采集,搭建了光栅投影双目立体视觉采集系统。投影仪投射编程生成的正弦光栅到物体表面,两个摄像机平行放置采集变形的光栅图,进行图像预处理,利用格雷码和相移结合的方法获得相位值,以此为据进行左右图像立体匹配,结合系统标定获得的内外参数利用视差原理计算出三维空间坐标,从而完成实物的数据采集。

To acquire the data of real object in the Reverse Engineering,the parallel binocular stereo vision system based on fringe projection was built.The sinusoidal grating generated by programming is projected to the surface of the object by projector.The deformed grating image is collected by two cameras which are parallelly placed.With the preprocessing of the image,the phase value can be acquired using the phase-shift method as well as gray code and the stereo-matching of the two images can be achieved based on the preprocessing,so the three dimensional coordinate can be figured out by the use of Binocular Parallax theory as well as internal and external parameters obtained from system calibration,and in this way,the date acquisition of the object can be accomplished.