2004 7th International Conference on Signal Processing [electronic resource] : proceedings : ICSP'04 : Aug. 31-Sept 4, 2004, Beijing, China / editors, Yuan Baozong, Ruan Qiuqi, Tang Xiaofang ; [sponsored by the Chinese Institute of Electronics (CIE) ; technically co-sponsored by IEEE Signal Processing Society (IEEE-SPS) ; co-sponsored by the Institution of Electrical Engineers (IEE) ... [et al.] ; organized by CIE Signal Processing Society ... [et al.].]