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swt >> discrete_wavelet_analysis > upcoef

upcoef

Direct Restruction

Calling Sequence

Y=upcoef(type,x,wname,[N],[L])
Y=upcoef(type,x,Lo_R,Hi_R,[N],[L])

Parameters

type:

approximation or detail, 'a' or 'd'.

x:

input vector

wname:

wavelet name, haar( "haar"), daubechies ("db1" to "db36"), coiflets ("coif1" to "coif17"), 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"

X:

reconstruction

Lo_R:

lowpass synthesis filter

Hi_R:

highpass syntheis filter

N:

restruction level

L:

desired output length

Description

upcoef is for upward reconstruction from any desired input vector.

Examples

x=rand(1,100);
[cA,cD]=dwt(x,'db2');
Y=upcoef('a',cA,'db2',1);
Z=upcoef('a',cA,'db2',3);

Authors

See also


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