Histogram backprojection

[Stéfan van der Walt]

On Apr 11, 2013 8:49 PM, "Jérôme Kieffer" <google at terre-adelie.org> wrote:
>
> On Wed, 10 Apr 2013 04:13:52 -0700 (PDT)
> abid rahman <abidrahman2 at gmail.com> wrote:
>
> > Doesn't scikit-image has a 2d convolution function like cv2.filter2D in
> > OpenCV which enables convolution of an image (or any numpy array) with
> > custom kernel ?
>
> Convolution can be done in Fourier space, especially if the kernel is
large ... I do that often, especially on nvidia GPU where FFT is for free.

SciPy also provides fftconvolve, for what it's worth.

Looking forward to seeing those opencl codes! (We have to reopen the
backend discussion soon)

Stéfan
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