Architecture Optimization for Discrete Wavelet Transform in JPEG2000
Shengqiang Lou · Microprocessors · 2011
The standard lifting algorithm of JPEG2000 is analyzed and modified.The wavelet coefficients adopt CSD coding after flipping.Shift-add operations are adopted to implement multiplier with a constant coefficient.This paper analyses the roundoff error,modifies the lifting step and adopts the pipeline design.A efficient parallel architecture is proposed to increase the transform speed and achieve higher hardware utilization.