Rmagick find_similar_region

Hi folks,

Just wondering if anyone could shed some light on the find_similar_region method of rmagick as I'm hoping to find something similar to use in VB.Net (I know, boo hiss, lol). Is this method a native rmagick method or is it derived from ImageMagick/something else?

Any insights would be greatly appreciated :o) Thanks very much, Becky