PIL Best Way To Replace Color?

Question

I am trying to remove a certain color from my image however it\'s not working as well as I\'d hoped. I tried to do the same thing as seen here Using PIL to make all white pi

Answer 1

If the pixels are not easily identifiable e.g you say (r < 100 and g < 100 and b < 100) also doesn't match correctly the black region, it means you have lots of noise.

Best way would be to identify a region and fill it with color you want, you can identify the region manually or may be by edge detection e.g. http://bitecode.co.uk/2008/07/edge-detection-in-python/

or more sophisticated approach would be to use library like opencv (http://opencv.willowgarage.com/wiki/) to identify objects.