Motion blur of a colored image

I was trying to write a code to do a motion blur in multiple directions so I was able to make it using 2D convolution but after turning it to gray using rgb2gray function so is there is a way to return the image to rgb after the 2Dconvolution .

[Bjorn Gustavsson]

No, not really. There might be some cunning techniques to recolour rgb-images if you have a similar colour-palette. Use the very simple solution I supplied below. You're completely correct in doing it with a 2-D convolution. However, the simplest way is to do this on each of the R, G and B colour-planes separately.

Answer 1

[Bjorn Gustavsson]

This is easiest to do color-plane by color-plane:

rgbMB(:,:,3) = conv2(rgbIM(:,:,3),K,'same');
rgbMB(:,:,2) = conv2(rgbIM(:,:,2),K,'same');
rgbMB(:,:,1) = conv2(rgbIM(:,:,1),K,'same');

You would have to handle casting your rgb-image to double, and then back.

In principal you could turn to convn but I think there is not that much time to gain by that.

HTH

[May Sherif]

Thanks alot :)