Matlab's Conv2 equivalent in OpenCV

Question

I have been trying to do Convolution of a 2D Matrix using OpenCV. I actually went through this code http://blog.timmlinder.com/2011/07/opencv-equivalent-to-matlabs-conv2-fun

Answer 1

If you are using OpenCV with Python 2 binding you can use Scipy as long as your images will be ndarrays:

>>> from scipy import signal
>>> A = np.array([[1,-2], [3,4]])
>>> B = np.array([[-0.707, 0.707]])
>>> signal.convolve2d(A,B)
array([[-0.707,  2.121, -1.414],
      [-2.121, -0.707,  2.828]])

Be sure that you use the full mode (which is set by default) if you want to achieve the same result as in matlab as long as if you use 'same' mode Scipy will center differently from Matlab.