Scilab Wavelet Toolbox Function
Last update : June 2007
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
-
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(x2,'db2');
Y=upcoef2('a',cA,'db2',1);
Z=upcoef2('h',cH,'db2',3);
Author
Roger Liu and Isaac Zhi
See Also
wavedec2
,
waverec2
,
wrcoef2
,