摘要
分析了ＰＩＶ粒子图像的一个局部特性统计量──联合灰度统计频数。主要分析它的极大值和前后两次曝光粒子图像的灰度域的交对它的前三个局部极大值的影响，从而预示了用联合灰度统计频数来计算单元粒子平均位移的新方法。
In this paper, the local characteristics statistics of particle image-unified greyness statistical frequency is suggested, and its peak value is analysised. And also the intersection consequence of double-exposure image greyness to the peak value of unified greyness statistical frequency, to indicate the method to calculate the mean displacement of spots particles by using the unified greyness statisticle frequency of the particle image.
基金
国家"攀登计划"(A)资助
国家教委博士学科点基金
