similar to gaussian filter for color

Hi everybody,

I am trying to find a way to convolve a filter that highlights the color red in the image attached below. I am trying to find a filter similar to gaussian filter to highlight the red square. I don't want to simply threshold the color though. It has to be filtered to create a red center with red halo around it. Does anybody know such a filter or how to built one? if you have a link to paper or something that would help more actually.

Thanks in advance

Answer 1

[Surabhi KS]

You could try this:

Threshold the image to obtain the red rectangle, locate the center through centroid detection and define a matrix for the area of the rectangle (one side i.e. square) with a gaussian distribution with the mean and stdev of your choice.