rotating image by using fourie transformation

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Michael Shapira
Michael Shapira 2011 年 11 月 18 日
I know that Matlab has a command to rotate image, but I wander how can one rotate image by using fourie transformation by angle X. Does someone has an idea?

回答 (1 件)

Walter Roberson
Walter Roberson 2011 年 11 月 18 日
  2 件のコメント
Michael Shapira
Michael Shapira 2011 年 11 月 18 日
Thank you. I have a question
While 2D transformation is clear and done by fft2 command, not clear how to calculate Sigma statement since fft2 doesn't really returns l and m variables and what are the limits of sigma, It should start from lower bound and end at high bound , but it is not specified
Walter Roberson
Walter Roberson 2011 年 11 月 18 日
Sorry, I didn't even know it was possible myself until I looked it up. I do not understand the technique.

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