Thread Subject:

pls help me to find the accuracy correctly.

Vm=Out;
[row,col]=find(Vm==255);
FN1=length(row);
[row,col]=find(Vm==0);
TN1=length(row);
[row,col]=find(Vm>0);
TP=length(row);
[m,n]=size(Vm);
FP=abs(TP-(m-8*n-8));
FN=abs(FN1-TP);
TN=abs(TN1-FP);

Sensitivity=TP/(TP+FN);
disp('Sensitivity in Percentage');
disp(Sensitivity*100);

ACC=(TP+TN)/(TP+FP+TN+FN);
disp('Accuracy in Percentage');
disp(ACC*100);

"balan chelvi" <thamsnatraj@yahoo.com> wrote in message <jvvh8j$9bh$1@newscl01ah.mathworks.com>...
> Vm=Out;
> [row,col]=find(Vm==255);
> FN1=length(row);
> [row,col]=find(Vm==0);
> TN1=length(row);
> [row,col]=find(Vm>0);
> TP=length(row);
> [m,n]=size(Vm);
> FP=abs(TP-(m-8*n-8));
> FN=abs(FN1-TP);
> TN=abs(TN1-FP);
>
> Sensitivity=TP/(TP+FN);
> disp('Sensitivity in Percentage');
> disp(Sensitivity*100);
>
> ACC=(TP+TN)/(TP+FP+TN+FN);
> disp('Accuracy in Percentage');
> disp(ACC*100);

I think you need to be more specific as to what you're asking for help with. What is the input 'Out'?