help!

legolasGG

Hi! I am now compiling a PIV code, the problem with my FFT method is that when I use a small interogate window and a larger search window, I padded zeros of int_window in order to make the complex conjugate multiplication of fft of the two matrix. However, a problems occurs that I can substracted the mean of int_window in advance, but how about the demean and normalization factor of the search window? Here, what I am interested is the local mean and deviation of search window, which part would overlap with moving int_window when doing cross-corrleation via fft.
do I make myself understood? please help if you have used the same algorithm.

yxjbuaa

论坛里编写PIV图像处理程序的人可能不太多，你可以查一下前面的帖子，好像曾经有人讨论过这方面的东西。此外，论坛里 piv 应该知道这方面的内容，如果没有猜错立方天地公司的PIV数据处理软件是他编写的，e-mail是 infor@piv.com.cn

piv

你的这种关于变窗口互相关算法很久以前都已经有定论了，建议你看一下adrian或companhens，westweel他们关于这方面的论文,对你会有帮助的。我们这里有人用matlab语句做过这方面分析，他会给你回信的。

Promising

下面引用由piv在 2005/04/14 03:39pm 发表的内容：
你的这种关于变窗口互相关算法很久以前都已经有定论了，建议你看一下adrian或companhens，westweel他们关于这方面的论文,对你会有帮助的。我们这里有人用matlab语句做过这方面分析，他会给你回信的。