qccwavsubbandpyramidredundantdwtsubsample.3

来自「spiht for linux this is used to decod an」· 3 代码 · 共 71 行

.TH QCCWAVSUBBANDPYRAMIDREDUNDANTDWTSUBSAMPLE 3 "QCCPACK" ""
.SH NAME
QccWAVSubbandPyramidRedundantDWTSubsample \- 
subsample a redundant discrete wavelet transform
into a subband-pyramid structure
.SH SYNOPSIS
.B #include "libQccPack.h"
.sp
.BI "int QccWAVSubbandPyramidRedundantDWTSubsample(const QccMatrix *" input_matrices ", QccWAVSubbandPyramid *" subband_pyramid ", const QccWAVWavelet *" wavelet );
.SH DESCRIPTION
.B QccWAVSubbandPyramidRedundantDWTSubsample()
calls
.BR QccWAVWaveletRedundantDWT2DSubsample (3)
to subsample a 2D redundant discrete wavelet transform (RDWT) whose
coefficients are stored in
.IR input_matrices ,
returning the resulting critically sampled DWT coefficients in
.IR subband_pyramid .
It is assumed that the
.IR num_rows ,
.IR num_cols ,
and
.IR num_levels
fields of
.IR subband_pyramid
have been set to correctly reflect the size and number of scales of
decomposition represented by
.IR input_matrices 
prior to calling
.BR QccWAVSubbandPyramidRedundantDWTSubsample() .
Additionally, it is assumed that the
.IR subsample_pattern_row
and
.IR subsample_pattern_col
fields of
.IR subband_pyramid
have been set to reflect the desired subsampling patterns.
Finally, it is assumed that 
.IR subband_pyramid
has been allocated
via a call to
.BR QccWAVSubbandPyramidAlloc (3)
prior to calling
.BR QccWAVSubbandPyramidRedundantDWTSubsample() .
.SH "RETURN VALUES"
This routine
returns 0 on success and 1 on error.
.SH "SEE ALSO"
.BR QccWAVWaveletRedundantDWT2DSubsample (3),
.BR QccWAVSubbandPyramid (3),
.BR QccPackWAV (3),
.BR QccPack (3)
.SH AUTHOR
Copyright (C) 1997-2009  James E. Fowler
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