I'm not aware of anything that can do this type of thing.. someone else might be.

What are your ideas? The only thing that I can think of is kind of brute force... iterate over every pixel, searching for a user-specified colour, perhaps? If the colour is found at that location, create a point. That would of course create hundreds of points... so you could do another test after you've found all your points. The test would determine whether there are two points that are more than one pixel away from each other on the same axis (no slope):



Assuming the pixels are stored consecutively, you could then erase every point between those two points?

Might not be great but that's a start haha.