Properties of the mode filter when applied to colour images

This paper explains the problems underlying the design of mode filters and describes a new mode filter algorithm that can be applied to colour images. It demonstrates the effectiveness of the new filter for enhancing colour images. It also compares the edge shifting properties of mode filters with those of median filters and shows that the results are completely in line with theoretical predictions. It also finds that mode filters are far superior to median filters at handling images containing high levels of impulse noise.