Scilab Wavelet Toolbox Function
Last update : June 2007
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
-
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);
Author
Roger Liu and Isaac Zhi
See Also
wavedec
,
waverec
,
wrcoef
,