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wrcoef2

Restruction from single branch from two dimension multiple level decompstion

Calling Sequence

X=wrcoef2(type,c,s,wname,[N])
X=wrcoef2(type,c,s,Lo_R,Hi_R,[N])

Parameters

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"
X
: reconstruction
Lo_R
: lowpass synthesis filter
Hi_R
: highpass syntheis filter
c
: coefficent array
s
: size array
N
: restruction level

Description

wrcoef2 is for reconstruciton from single branch of two dimension multiple level decompostion. Extension mode is stored as a global variable and could be changed with dwtmode. If N is omitted, maximum level is used.

Examples

x=rand(100,100);
[C,S]=wavedec2(x,3,'db2');
A2=wrcoef2('a',C,S,'db2',2);

Authors

Roger Liu and Isaac Zhi

See Also


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