Image data as a sine wave?

6 次查看（过去 30 天）
Philip
Philip 2012-5-14
Does anybody know if it is possible to represent image data as a sine wave?

请先登录，再回答此问题。

回答（1 个）

Image Analyst
Image Analyst 2012-5-14
More info is needed. I can represent an image by a lot of sine waves - that's what its Fourier transform is.
  3 个评论
显示 1更早的评论
Walter Roberson
Walter Roberson 2012-5-14
fft() would seem to be appropriate. Just watch out for the fact that the output of fft() will very likely be complex.
Philip
Philip 2012-5-17
Thanks, I've been looking at using the output of FFT and I think it's a good way to go. Do you know how I can use the stepinfo() function on the image data, such that it can tell me the overshoot, undershoot and settling time? The document says that the input data must be a Transfer Function, but I am not sure how to compute this from the spatial pixel values...

请先登录，再进行评论。

类别

在 Help Center 和 File Exchange 中查找有关 Read, Write, and Modify Image 的更多信息

标签

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!

Translated by