Jun Ohya Jun Kurumisawa Ryohei Nakatsu Kazuyuki Ebihara Shoichiro Iwasawa David Harwood Thanarat Horprasert 29-39 1999 6 IEEE MultiMedia 2 http://doi.ieeecomputersociety.org/10.1109/93.771371 db/journals/ieeemm/ieeemm6.html#OhyaKNEIHH99