I am new and naive to OpenCV and image processing. I have an image which is of RGB standard. Why should I convert it grayscale in order to detect blur or apply laplacian operator? Really appreciate your help.
A RGB image is nothing else than a grayscale image with 3 channels which are interpreted as red, green and blue. So in many cases analysing RGB image won't give you more informations than analysing grayscale image, but analysing grayscale image is about 3 times faster. If you want to measure chromatic aberrations, for example, you can't use only grayscale image, but for many other cases you can.
You might want to consider that the green channel dominates an image. You may be able to have your color and your three times processing by just enhancing green. In fact, with most solid state imagers, the blue and red have 1/2 the resolution as the green channel. Edges are detected from the green pixels and added to the blue and red to fake the human eye into believing that there is an improvement in resolution.
Asked: 2015-12-22 05:19:01 -0600
Seen: 1,193 times
Last updated: Dec 22 '15
