zfiltering
Newbie level 3
thresholding matlab
Hi,
Could someone please explain me the following thing. When I use thselect() to get threshold value in Matlab, it returns me different values for existing estimators. E.g.
'rigrsure' (Stein's Unbiased Risk Estimate) = 0.003
'heursure' (Heuristic SURE) = 2.53
'minimaxi' (Minimax Estimate) = 2.2
Why there are such a difference between SURE and HSURE\Minimax? And how can I use the last ones when the max wavelet coefficient value is 0.02?
Thanks
Hi,
Could someone please explain me the following thing. When I use thselect() to get threshold value in Matlab, it returns me different values for existing estimators. E.g.
'rigrsure' (Stein's Unbiased Risk Estimate) = 0.003
'heursure' (Heuristic SURE) = 2.53
'minimaxi' (Minimax Estimate) = 2.2
Why there are such a difference between SURE and HSURE\Minimax? And how can I use the last ones when the max wavelet coefficient value is 0.02?
Thanks