Inverse DFT

[Arnab Das]

I am working on Image Processing application. My application need to
apply Inverse DFT to 1200*1200 array.What I have done is that I have
applied ID inverse dft row wise and then column wise (according to the
algo). I am getting acceptable result but the method is taking too
much time ( almost 10 minutes) which is not acceptable. Can anybody
suggest me how I can reduce the Time ?

Thanks,
Arnab

 

[Jeff Johnson]

I am working on Image Processing application. My application need to
apply Inverse DFT to 1200*1200 array.What I have done is that I have
applied ID inverse dft row wise and then column wise (according to the
algo). I am getting acceptable result but the method is taking too
much time ( almost 10 minutes) which is not acceptable. Can anybody
suggest me how I can reduce the Time ?

You might want to repost in microsoft.public.dotnet.framework.drawing.

 

[not_a_commie]

I'm sure if you were to post the code we could give you a lot of
suggestions. Also, have you considered using DllImport to call the
BLAS routine for your particular CPU?