摘要
本文简要介绍了亚像素数字散斑测量研究中高斯曲面插值、抛物面插值及梯度插值原理,提出了一种利用计算机图像处理软件考查数字散斑测量软件精度的方法,并利用这种方法对上述三种插值方法进行了比较分析,给出亚像素测量的测试实例。结果表明,抛物面插值法计算速度较快,精度较高,并且误差波动较小。
The principles of Gauss surface interpolation, parabolic interpolation and gradient interpolation in the subpixel digital speckle measurement are intrcduced in this paper. A method to examine the accuracy of digital speckle measurement software is proposed with the help of computer- aided image processing soft, ware, and is used to analyze the three interpolation methods. The experiment of subpixel digital speckle measurement is also illustrated. The results show that parabolic interpolation is much better than Gauss surface interpolation and gradient interpolation in calculating speed, accuracy and error fluctuation.
出处
《激光杂志》
CAS
CSCD
北大核心
2005年第5期65-67,共3页
Laser Journal
基金
国家自然科学基金项目(10462002)
教育部春晖计划项目
云南省自然科学基金项目(2004A0011M)
关键词
非接触检测
光学测量
数字散斑
亚像素
Non - contact detection
Optical metrology
Digital speckle
Snbpixe.
