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trishrink1.m
Package: 小波去噪.rar [view]
Upload User: sla11nk8
Upload Date: 2013-03-09
Package Size: 21k
Code Size: 0k
Category:
Other systems
Development Platform:
Matlab
- function [w1] = trishrink1(y1,y2,y3,T)
- % Bivariate Shrinkage Function
- % Usage :
- % [w1] = trishrink1(y1,y2,T)
- % INPUT :
- % y1 - a noisy coefficient value
- % y2 - the corresponding parent value
- % T - threshold value
- % OUTPUT :
- % w1 - the denoised coefficient
- R = sqrt(abs(y1).^2 + abs(y2).^2+abs(y3).^2);
- R = R - T;
- R = R .* (R > 0);
- w1 = y1 .* R./(R+T);