| Wavelet Toolbox | |
Syntax
THR = wthrmngr(OPTION,METHOD,VARARGIN)
Description
THR = wthrmngr(OPTION,METHOD,VARARGIN) returns a global threshold or level dependent thresholds depending on OPTION. The inputs, VARARGIN, depend on the OPTION and METHOD values.
This M-file returns the thresholds used throughout the MATLAB Wavelet Toolbox for de-noising and compression tools (command line M-files or GUI tools).
Valid options for the METHOD parameter are listed in the table below.
| METHOD |
Description |
'scarcehi' |
See wdcbm or wdcbm2 when used with 'high' predefined value of parameter M. |
'scarceme' |
See wdcbm or wdcbm2 when used with 'medium' predefined value of parameter M. |
'scarcelo' |
See wdcbm or wdcbm2 when used with 'low' predefined value of parameter M. |
'sqtwolog' |
See 'sqtwolog' option in thselect, and see also wden. |
'sqtwologuwn' |
See 'sqtwolog' option in thselect, and see also wden when used with 'sln' option. |
'sqtwologswn' |
See 'sqtwolog' option in thselect, and see also wden when used with 'mln' option. |
'rigsure' |
See 'rigsure' option in thselect, and see also wden. |
'heursure' |
See 'heursure' option in thselect, and see also wden. |
'minimaxi' |
See 'minimaxi' option in thselect, and see also wden. |
'penalhi' |
See wbmpen or wpbmpen when used with 'high' value of parameter ALPHA. |
'penalme' |
See wbmpen or wpbmpen when used with 'medium' value of parameter ALPHA. |
'penallo' |
See wbmpen or wpbmpen when used with 'low' value of parameter ALPHA. |
'rem_n0' |
This option returns a threshold close to 0. A typical THR value is median(abs(coefficients)). |
'bal_sn' |
This option returns a threshold such that the percentages of retained energy and number of zeros are the same. |
'sqrtbal_sn' |
This option returns a threshold equal to the square root of the value such that the percentages of retained energy and number of zeros are the same. |
| | wthresh | Discrete Wavelet 1-D options. | |