摘要
介绍了亚像素数字散斑测量中常用的高斯曲面插值、抛物面插值及梯度插值原理,推导了相关的公式,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.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 introduced. The related formulae are educed. A method to examine the accuracy of digital speckle measurement software is proposed with the help of computer-aided image processing software, and is used to compare the above interpolation methods. The results show that parabolic interpolation is much better than others concerning calculation speed, calculation accuracy and error fluctuation.
出处
《昆明理工大学学报（理工版）》
2005年第2期55-59,共5页
Journal of Kunming University of Science and Technology(Natural Science Edition)
基金
国家自然科学基金项目(项目编号:10462002)
云南省自然科学基金项目(项目编号: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
subpixel
