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upcoef2

Two Dimension Direct Restruction

Calling Sequence

Y=upcoef2(type,x,wname,[N],[S])
Y=upcoef2(type,x,Lo_R,Hi_R,[N],[S])

Parameters

x:

input matrix

type:

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

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"

Y:

reconstruction

Lo_R:

lowpass synthesis filter

Hi_R:

highpass syntheis filter

N:

restruction level

S:

desired output size vector

Description

upcoef2 is for upward two dimension reconstruction from any desired input matrix.

Examples

x=rand(100,100);
[cA,cH,cV,cD]=dwt2(x,'db2');
Y=upcoef2('a',cA,'db2',1);
Z=upcoef2('h',cH,'db2',3);

Authors

See also


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