基于最大色差彩色组合编码的三维面形测量方法

为了克服光学三维传感中相位恢复困难的问题,提出了一种基于最大色差彩色组合编码的三维面形测量方法.这种方法的特点之一是使得垂直于条纹方向特定长度的颜色序列是唯一的,从而建立了空间位置与颜色的对应关系.特点之二是相邻条纹之间具有最大色差,因而具有最大可区分性.将得到的彩色组合条纹投影到物体表面得到变形条纹,通过计算各种颜色条纹相对参考平面上条纹移动的距离,可以恢复出物体的高度.实验证明,该方法需要获取的图像少、计算时间少、精度较高,具有很强的抗干扰能力.

3-D shape measurement method with max-difference color-coding structured light

A 3-D shape measurement method using max-difference color-coding structured light is suggested to avoid complicated phase-recover process in three-dimension sensing.A pattern of exclusive color sequence is obtained and a relationship between spatial location and color is established.The difference of neighboring colors is maximized so that they can be distinguished easily.Projecting the color-combination fringe to the object and reference plane respectively,two images are taken.The height of the object can be recovered by edge detection and triangulation.This method has been implemented and proved to be fast,precise and noise-immune.