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Endemoniada

Combining Convolution Filters ?

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Hi guys, I'm using convolution filters on images and I'm wondering if I can combine them so I only have to do one pass. So, for example, first I use a 3x3 Gaussian filter, then a 3x3 Sharpen filter on the result. Can I combine those two matrices so I don't have to go over every pixel twice ? If so, how ? Thanks.

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Convolve the two filters and use the result to filter the image. Just be aware of the support for the resulting filter. The support for two convolved 3x3 filters is a 5x5 filter.

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