Fixed wordsize implementation of lifting schemes

Research output: Contribution to journalArticlepeer-review

Abstract

We present a reversible nonlinear discrete wavelet transform with predefined fixed wordsize based on lifting schemes. Restricting the dynamic range of the wavelet domain coefficients due to a fixed wordsize may result in overflow. We show how this overflow has to be handled in order to maintain reversibility of the transform. We also perform an analysis on how large a wordsize of the wavelet coefficients is needed to perform optimal lossless and lossy compressions of images. The scheme is advantageous to well-known integer-to-integer transforms since the wordsize of adders and multipliers can be predefined and does not increase steadily. This also results in significant gains in hardware implementations.

Original languageEnglish
Article number13754
JournalEurasip Journal on Advances in Signal Processing
Volume2007
DOIs
StatePublished - 2007

Fingerprint

Dive into the research topics of 'Fixed wordsize implementation of lifting schemes'. Together they form a unique fingerprint.

Cite this