1. Detection and classification of edges in color images;Koschan A.;IEEE Signal Process. Mag.,2005
2. Color edge detection using vector order statistics;Trahanias P.E.;IEEE Trans. Image Process.,1993
3. Detecting edges using density value;Economou G.;Electron. Lett.,2004
4. Colour image edge detector based on quaternion convolution;Sangwine S.J.;Electron. Lett.,1998
5. 2000 Proc. 2000 Int. Conf. Image Processing (ICIP) Vancouver British Columbia Canada C.J. Evans S.J. Sangwine T.A. Ell Hypercomplex color‐sensitive smoothing filters 541 544