Realtime wavelet video coder based on reduced memory accessing
R.Y. Omaki, Yu Dong, Morgan Hirosuke Miki, Makoto Furuie, Daisuke Taki, Masaya Tarui, Gen Fujita, Takao Onoye, Isao Shirakawa · 2001
In this paper, the VLSI implementation of a real-time EZW video coder is presented. The proposed architecture adopts a modified 2-D DWT subband decomposition scheme, with the purpose of reducing the transposition memory requirements of 2-D DWT. In addition, through the use of a parallelized partial zerotree EZW scheme, temporary buffer requirements between the DWT and EZW modules are also reduced. The video encoder is integrated in a 0.35 um 3LM chip by using 341 K transistors on a 4.93 x 4.93 mm2 die.