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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 "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"
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

Roger Liu and Isaac Zhi

See Also

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