Re: [Matplotlib-users] Why so different from Matlab to matplotlib (fft2 question)?

[Jay P. <pa...@gm...>]

On 1/26/07, John Hunter <jdh...@ac...> wrote:
> >>>>> "Jay" == Jay Parlar <pa...@gm...> writes:
>
>     Jay> That's the problem, I believe. 'imread' in mpl always reads
>     Jay> images in as MxNx4, while Matlab will check if the image is
>     Jay> B&W and just do MxN.  Is there any way to force MxN behaviour
>     Jay> in mpl?
>
> No way currently, but one could modify the png reader to do it....
> Probably easiest is to use PIL and get a grayscale numpy array out,
> then  mpl's colormapping and normalization will work as advertised.


Beautiful, that worked like a charm.

from PIL import Image
im = Image.open("4kSnake.png")
a = scipy.asarray(im)
ft = fftpack.fftshift(fftpack.fft2(a))
...

Perfect!

Thanks so much,
Jay P.