PMP技术中检测饱和及校正相位的算法研究  

The Algorithm of Detecting Saturation and Correcting Phase in Phase Measurement Profilometry

作　　者：李娜[1] 牛帅 Li Na;Niu Shuai(Department of Biomedical Engineering,Changzhi Medical College, Changzhi Shanxi 046000, Chain;Heping Hospital Affiliated to Changzhi Medical College, Changzhi Shanxi 046000,Chain)

机构地区：[1]长治医学院生物医学工程系,山西长治046000 [2]长治医学院附属和平医院,山西长治046000

出　　处：《山西电子技术》2021年第1期84-86,共3页Shanxi Electronic Technology

摘　　要：由于物体表面反射率较大,使得PMP扫描物体时,物体局部区域产生饱和,从而引起三维重建无法反映物体的真实形貌。本文首先分析了饱和因素对相位的影响;其次提出一种检测物体饱和区域的方法,该方法通过检测纯色图像与N帧图像作差得到的检测图像中像素点的值,从而判断饱和区域;此外,针对平面型扫描物体,提出一种校正饱和区域相位的算法。实验仿真表明,本文提出的检测物体表面饱和区域的算法以及校正饱和因素造成的误差算法均是有效的。In the phase measurement system,the local area of the object is saturated due to the high reflectivity of the object surface.As a result,3D reconstruction can not accurately reflect the shape of the object.Firstly,this paper analyzes the phase error caused by saturation;secondly,it proposes a method to detect the saturated region of the surface of the object.In this method,the image is obtained by the difference between the pure color image and N-frame image,and the saturated area is determined according to the value of each pixel in this image.Finally,for flat objects,this paper proposes an algorithm to correct the phase of the saturated area.Experimental results show that the algorithm can effectively determine the saturation area and reduce the phase error caused by the saturation.

关 键 词：PMP 饱和 检测算法 相位校正 

分 类 号：TP391.9[自动化与计算机技术—计算机应用技术]