image and video processing

hi.i want to find accuracy(100%) in binary image.for example my roi size is 241x77.if all columns(77) detect 1 instead of 0 then i say its 100%. so i use yy= find(ROI_2(:,end)==1) to know which column has 1.

Answer 1

[Thorsten]

 ROI = rand(241,77) > 0; % sample data

any(ROI) give 1 for each column that contains at least one 1.

 acc = nnz(any(ROI))/size(ROI, 2);

[Image Analyst]

And for an example where the accuracy is not 100%, because some columns do not have a 1 in them:

% Create sample data where some columns won't have a 1 in them:
ROI = rand(241,77) > 0.995;
% any(ROI) gives a 1 for each column that contains at least one 1.
accuracyPercentage = nnz(any(ROI)) / size(ROI, 2)

[Ariff pasha]

tq sir :)0