**Name**

**iezw** Wavelet transform compression via EZW algorithm

**Command Synopsis**

**iezw** [-p] [-w *WeightFac*] *Compress* *QWavTrans*

-p : Print full set of information

-wWeightFac: Scaling factor for wavelet coefficients

Compress: Input string of codewords (cimage)

QWavTrans: Output reconstructed wavelet transform (wtrans2d)

**Function Summary**

void iezw (PrintFull , WeightFac , Compress , Output )

int *PrintFull ;

float *WeightFac ;

Cimage Compress ;

Wtrans2d Output ;

**Description**

This module reconstructs a wavelet transform from its compressed representation
which is read in *Compress*. *Compress* must have been generated
using *ezw* or *fezw* modules. The resulting wavelet transform is
put in the files with prefix *QWavTrans*.

*Compress* has been obtained by applying the Shapiro's EZW algorithm to
the wavelet transform of some image. See *ezw* module documentation
for a brief explanation of this algorithm.

The -w option has the same meaning as in *ezw* module and it
should be tune in the same way.

The -p option enables to get more information on the decompression process.

**See Also**

**Version 1.30**

Last Modification date : Thu Nov 29 20:23:57 2001

**Author**

Jean-Pierre D'Ales