基于结构光投影的三维物体识别

本文提出了一种三维物体识别的新方法，将一正弦条纹投影到物体表面，摄像机得到的是有变形条纹的二维强度像。取出有变形条纹的二维强度像的基频分量的位相部分构造一个纯相位数字滤波器，以受到不同物体表面高度调制的有变形条纹的二维强度像作为输入图像，在频域中完成基频分量之间的相关，最后根据输出的相关峰值大小即可判别不同的物体。

3D Object Recognition Based on Structured Light Projection

A method of 3D object recognition is presented.Sinusoid fringes are projected to the surface of objects.The fringes are deformed due to the height of the objects.The phase of the fundamental frequency component of the deformed fringes is used to design a digital phase only filter,Phase only correlation is performed between the fundamental frequency components of the different deformed fringes in frequency domain to discriminate different objects.The characteristic of the method is that intensity images with deformed fringes contain the height distribution information of the objects.This method is shift invariant.The efficiency of the method is verified by the experiment.