FFT2 has double version?

[junli]

Hi,

In IPP 3.0, FFT2 only suports float data format. double is supoorte in IPP 4.0?

[Ying_S_Intel]

Dear Customer,

Double type is not supported in Intel IPP 4.0 neither, what is your concern for this data type in 2D FFT?

Thanks,
Ying

[junli]

Hi,

Thank you very much for your response.

I am doing something on image processing. In this project, the image size is 4096X4096 or above, I have to perform the FFTs of 4-6 images andpeferform some operations among them, so, sometimes, the result became overflow. If in double type, no overflow, I think.

(I have tried to divide a constant after FFT, but it is possible to lose accuracy, is not it?).

Best reagrads,

Li

[borix]

I'm afraid you will get mem overflow having several images 4Kx4K of double