Laurence Tianruo Yang Proceedings 13th Brazilian Symposium on Computer Graphics and Image Processing (Cat. No.PR00878). 553-559 2000 ICPADS Workshops https://doi.org/10.1109/PADSW.2000.884681 https://doi.ieeecomputersociety.org/10.1109/PADSW.2000.884681 conf/icpads/2000w db/conf/icpads/icpads2000w.html#Yang00