1. Carron, T. and Lambert, P. (1994). Colour edge detector using jointly hue, saturation and intensity, IEEE Int. Conf. on Image Process, pp.977-981.
2. Dony, R.D. and Wesolkowski, S. (1999). Edge detection on colour images using RGB vector angle, Proc. IEEE CCECE '99 (Canada). Edmonton, Canada, May 9-12, 1999.
3. Chromatic modulation based metrology