Scilab Wavelet Toolbox Function
Last update : June 2007
detcoef2 - Two Dimension Detail Coefficent Extraction
Calling Sequence
-
D=detcoef2(type,c,s,N)
-
[H,V,D]=detcoef2('all',c,s,N)
Parameters
-
H
: reconstructed horizontal detail coefficient
-
V
: reconstructed vertical detail coefficient
-
D
: reconstructed diagonal detail coefficient
-
c
: coefficent array
-
s
: size array
-
N
: restruction level
-
type
: 'h', 'v', 'd', 'c' or 'compact'
Description
detcoef2 is for extraction of detail coeffient at different level after a multiple level decompostion. Extension mode is stored as a global variable and could be changed with dwtmode.
Examples
x=rand(100,100);
[C,S]=wavedec2(x,3,'db2');
H2=detcoef2('h',C,S,2);
Author
Roger Liu and Isaac Zhi
See Also
wavedec2
,
waverec2
,
appcoef2
,