Name
wnoisest — Estimate noise of 1-D wavelet coefficients
Calling Sequence
STDC = wnoisest(C,L,S)
Parameters
- S
-
: estimate noise for this decompostion levels
- C
-
: coefficent array
- L
-
: length array
- STDC
-
: STDC(k) is an estimate of the standard deviation of C_k
Description
estimates of the detail coefficients' standard deviation for levels contained in the input vector S
Examples
init = 2055415866; rand('seed',init);
x = rand(1,1000,'normal');
[c,l] = wavedec(x,2,'db3');
wnoisest(c,l,1:2)