Line Buffer Wordlength Analysis for Line-Based 2-D DWT.
Journal
2006 IEEE International Conference on Acoustics Speech and Signal Processing, ICASSP 2006, Toulouse, France, May 14-19, 2006
Pages
924-927
Date Issued
2006
Author(s)
Abstract
The on-chip line buffer dominates the total area and power of line-based 2-D DWT. Therefore, the line buffer wordlength has to be carefully designed to maintain the quality level due to the dynamic range growing and the round-off errors. In this paper, a complete analysis methodology is proposed to derive the required wordlength of line buffer given the desired quality level of reconstructed image. The proposed methodology can guarantee to avoid overflow of coefficients, and the difference between predicted and experimental quality level is averagely 0.06 dB in terms of PSNR.
Type
conference paper