FFT-based 2D convolution and correlation in Python

Question

Is there a FFT-based 2D cross-correlation or convolution function built into scipy (or another popular library)?

There are functions like these:

Answer 1

I think you want the scipy.stsci package:

http://docs.scipy.org/doc/scipy/reference/stsci.html

In [30]: scipy.__version__
Out[30]: '0.7.0'

In [31]: from scipy.stsci.convolve import convolve2d, correlate2d