Parallel VLSI architecture of discrete wavelet transform for JPEG2000
Ying Liu · Optics and Precision Engineering · 2009
In order to solve the problem that the Very Large Scale Integration(VLSI) architecture of a Discrete Wavelet Transform(DWT) wastes a huge amount of hardware resources,a parallel VLSI architecture based on the DWT for JPEG2000 is proposed.The architecture introduces a(9,7) wavelet parallel filtering technique based on the time difference,so that the row processor and the column processor can process the signals in a parallel way.By using a 2×2 transforming module,several kinds of registers can be used to substitute a lot of medium transforming memories.Experimental results show that the proposed architecture can efficiently decrease the hardware complexity and can improve hardware utilization to 100% nearly under the tight critical path.The architecture has been implemented in a post-route VHDL,and can be used as a compact and independent IP core for Voyage Data Recorder(VDR) radar image acquisition cards.