Scilab Wavelet Toolbox Function
Last update : June 2007
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
-
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);
Author
Roger Liu and Isaac Zhi
See Also
wavedec2
,
waverec2
,
upcoef2
,