## compare.m ( File view )

• By yueqiaohuayuan 2014-11-17
• View(s)：3508
• Point(s)： 3
```			function rmse = compare(f1, f2, scale)
%COMPARE Computes and displays the error between two matrices.
%   RMSE = COMPARE(F1, F2, SCALE) returns the root-mean-square error
%   between inputs F1 and F2, displays a histogram of the difference,
%   and displays a scaled difference image. When SCALE is omitted, a
%   scale factor of 1 is used.

%   Copyright 2002-2004 R. C. Gonzalez, R. E. Woods, & S. L. Eddins
%   Digital Image Processing Using MATLAB, Prentice-Hall, 2004.
%   \$Revision: 1.3 \$  \$Date: 2003/04/18 05:07:33 \$

% Check input arguments and set defaults.
error(nargchk(2, 3, nargin));
if nargin < 3
scale = 1;
end

% Compute the root-mean-square error.
e = double(f1) - double(f2);
[m, n] = size(e);
rmse = sqrt(sum(e(:) .^ 2) / (m * n))
...
...
```
...
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### compare.m (160.12 kB)

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