Scilab Wavelet Toolbox Function
Last update : June 2007
idwt - Inverse Discrete Fast Wavelet Transform
Calling Sequence
-
X=idwt(cA,cD,wname,[L])
-
X=idwt(cA,cD,Lo_R,Hi_R,[L])
Parameters
-
wname
: wavelet name
-
x
: reconstructed vector
-
Lo_R
: lowpass synthesis filter
-
Hi_R
: highpass syntheis filter
-
L
: restruction length
-
cA
: approximation coefficent
-
cD
: detail coefficent
Description
idwt is for inverse discrete fast wavelet transform. Coefficent could be void vector as '[]' for cA or cD.
Examples
x=rand(1,100);
[cA,cD]=dwt(x,'db2','mode','asymh');
x0=idwt(cA,cD,'db2',100);
Author
Roger Liu and Isaac Zhi
See Also
dwt
,