program execution

Question

bhargavi 2011-3-23

0
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https://ww2.mathworks.cn/matlabcentral/answers/3808-program-execution

[EDIT: 20110610 00:14 CDT - reformat - WDR]

x=imread('bt.jpg');
y=contrast_stretch(x,a,b,alpha,beta,gamma,Ya,Yb)
y=x;
% region 1
I=find(x<a);
y(I)=alpha*x(I);
% region 2
I=find(x>=a&x<b);
y(I)=beta*(x(I)-a)+Ya;
% region 3
I=find(x>=b);
y(I)=gamma*(x(I)-b)+Yb;

what's the error in this program.

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Ashish Uthama 2011-3-23

We dont have access to 'bt.jpg'. And I dont think |contrast_stretch| is a MATLAB function which folks here would have access to either.

You might get a helpful answer if you at least posted the full error message.

Or, you could spend some time getting familiar with debugging in MATLAB : http://www.mathworks.com/help/techdoc/matlab_prog/f10-60570.html . This might help you solve this issue yourself, or post a more detailed question.

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