Blurs the specified channel. We convolve the image with a Gaussian
operator of the given radius and standard deviation (sigma).
The blur method differs from gaussianBlur in that it uses a
separable kernel which is faster but mathematically equivalent
to the non-separable kernel.
Blurs the specified channel. We convolve the image with a Gaussian operator of the given radius and standard deviation (sigma). The blur method differs from gaussianBlur in that it uses a separable kernel which is faster but mathematically equivalent to the non-separable kernel.