[5] Deepthi P Valaparla, Vijayan K Asari. An Adaptive Technique for the Extraction of Object Region and Boundary from Images with Complex Environment[A]. 2001 IEEE 30th Applied Imagery Pattern Recognition Workshop( AIPR'01 ) [C]. 2001.194-199.
[7] Milan Sonka, Vaclav Hlavac, Roger Boyle. Image Processing,Analysis, and Machine Vision. 2nd ed[M]. Boston: PWS Publishing Co, 1998.