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iswt2

Two Dimensional Inverse Stationary Wavelet Transform

Calling Sequence

X0=iswt2(A,H,V,D,wname])
X0=iswt2(A,H,V,D,Lo_R,Hi_R)
X0=iswt2(SWC,wname])
X0=iswt2(SWC,Lo_R,Hi_R)

Parameters

A
: approximation coefficient
H
: horizontal detail coefficient
V
: vertical detail coefficient
D
: detail coefficient
SWC
: composite coefficient
wname
: wavelet name, haar( "haar"), daubechies ("db1" to "db20"), coiflets ("coif1" to "coif5"), symlets ("sym2" to "sym20"), legendre ("leg1" to "leg9"), bathlets("bath4.0" to "bath4.15" and "bath6.0" to "bath6.15"), dmey ("dmey"), beyklin ("beylkin"), vaidyanathan ("vaidyanathan"), biorthogonal B-spline wavelets ("bior1.1" to "bior6.8"), "rbior1.1" to "rbior6.8"
X0
: reconstruced signal
Lo_R
: lowpass synthesis filter
Hi_R
: highpass synthesis filter

Description

iswt2 is two dimenstional discrete inverse stationary wavelet transform utility.

Examples

x=rand(128,128);
[A,H,V,D]=swt2(x,3,'db2');
x0 = iswt2(A,H,V,D,'db2');

Authors

Roger Liu and Isaac Zhi

See Also


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