摘要
提出了一种基于动态图像处理的新的电子散斑计量方法光流场分析方法，从新的角度出发讨论了运用图像序列分析的概念来解决散斑图样测量的可行性和简便性。并且解决了当散斑图像不满足进行光流场分析的约束条件时的测量问题，即通过多通道的图像处理方法来改变图像连续特性，从而扩大了测量范围。经典的散斑图样的计量都必须经过在空间频域中的处理，而光流场分析法则将散斑图样的计算直接在空间域中进行，为散斑计量术能够实现真正的实时测量。
A new method of speckle metrology techniques called optical flow analysis is proposed based on dynamic scene analysis. From a new point of view, the probability of using the concept of image sequence processing to analyse speckle patterns is discussed in detail. It is proved that if speckle patterns do not meet the constrained conditions for optical flow analyses, a multichannel image processing method can be used to change the continued distribution of images to expand the measurement range. With classical metrology techniques , speckle patterns must be processed in spatial frequency domains. But by using optical flow analyses, speckle patterns can be directly processed in spatial domains. It provides a new way to reach the real time measurement of speckle patterns.
出处
《光学学报》
EI
CAS
CSCD
北大核心
1997年第4期434-441,共8页
Acta Optica Sinica
基金
国家自然科学基金
关键词
散斑计量
图像序列分析
光流场分析
信息光学
speckle metrology, image sequence processing, optical flow analysis, multichannel image processing.
