[Numpy-discussion] fast way to convolve a 2d array with 1d filter

Nadav Horesh nadavh@visionsense....
Tue Dec 2 06:36:55 CST 2008


You can use 2D convolution routines either in scipy.signal or numpy.numarray.nd_image

  Nadav


-----הודעה מקורית-----
מאת: numpy-discussion-bounces@scipy.org בשם frank wang
נשלח: ג 02-דצמבר-08 03:38
אל: numpy-discussion@scipy.org
נושא: [Numpy-discussion] fast way to convolve a 2d array with 1d filter
 

Hi,
 
I need to convolve a 1d filter with 8 coefficients with a 2d array of the shape (6,7). I can use convolve to perform the operation for each row. This will involve a for loop with a counter 6. I wonder there is 
an fast way to do this in numpy without using for loop. Does anyone know how to do it?
 
Thanks
 
Frank
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