how i can fix noise estimated value everytime if i reopened matlab.

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vipul utsav 2013-3-19

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https://ww2.mathworks.cn/matlabcentral/answers/67840-how-i-can-fix-noise-estimated-value-everytime-if-i-reopened-matlab

关闭： MATLAB Answer Bot 2021-8-20

I have implemented noise estimation algorithm in matlab,and i have added noise using 'randn' function.now i run this program in matlab and i take value of noise estimated.

now i close the matlab. and reopened it. and open the above program and i view the value of noise estimated, it is little different from previos value. i khow why this done. because randn function adds the different value at every pixel generally everytime and total deviation of noise matrix makes is equal to standard deviation that i have defined in ''sd*randn''.

so how i can fix noise estimated value everytime if i reopened matlab.