| 数字散斑测量中亚像素位移计算方法的选择研究 |
| |
| 引用本文： | 郭荣鑫 蔡光程 马琨 李俊昌. 数字散斑测量中亚像素位移计算方法的选择研究[J]. 激光杂志, 2005, 26(5): 65-67 |
| |
| 作者姓名： | 郭荣鑫 蔡光程 马琨 李俊昌 |
| |
| 作者单位： | 昆明理工大学工程力学系,昆明,650093;昆明理工大学数学系,昆明,650093;昆明理工大学激光研究所,昆明,650093 |
| |
| 基金项目： | 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) |
| |
| 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。
|
| 关 键 词： | 非接触检测 光学测量 数字散斑 亚像素 |
| 文章编号： | 0253-2743(2005)05-0066-03 |
| 收稿时间： | 2004-04-05 |
| 修稿时间： | 2004-04-05 |
A comparative study on the subpixel displacement calculation methods used in digital speckle measurement |
| |
| GUO Rong - xin, CAI Guang- chen,MA Kun,LI June - hang. A comparative study on the subpixel displacement calculation methods used in digital speckle measurement[J]. Laser Journal, 2005, 26(5): 65-67 |
| |
| Authors: | GUO Rong - xin CAI Guang- chen MA Kun LI June - hang |
| |
| Affiliation: | 1 Department of Engineering Mechanics, KMUST, Kunming 650093, China;2 Mathematics department, KMUST, Kunming 650093, China; 3.Laser Institute, KMUST, Kunraing 650093, China |
| |
| Abstract: | The principles of Gauss surface interpolation,parabolic interpolation and gradient interpolation in the subpixel digital speckle measurement are introduced 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. |
| |
| Keywords: | Non-contact detection Optical metrology Digital speckle Snbpixe |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
