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test1.m
Package: watermark综述+代码.rar [view]
Upload User: haoweisi88
Upload Date: 2010-02-03
Package Size: 1950k
Code Size: 1k
Category:
Graph program
Development Platform:
Matlab
- %Name: Chris Shoemaker
- %Course: EER-280 - Digital Watermarking
- %Project: Tests that using rand X times generates the same values as rand(1,X)
- clear all;
- % read in key for PN generator
- file_name='_key.bmp';
- key=double(imread(file_name))./256;
- % reset MATLAB's PN generator to state "key"
- rand('state',key);
- % execute rand 20 times
- for i=1:20
- test1(i)=rand;
- end
- % reset MATLAB's PN generator to state "key"
- rand('state',key);
- % generate 20 element random vector
- test2=rand(1,20);
- % check to make sure they're equal
- difference=sum(test1-test2),