Controlling For loop using matlab

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Algorithms Analyst 2013-6-11

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关闭： MATLAB Answer Bot 2021-8-20

Hi Everyone

I have code which plays a video like that

vidobj=VideoReader('.avi');

frames=vidobj.Numberofframes; for f=1:frames thisframe=read(vidobj,f); figure(1);imshow(thisframe); Progress=fprintf('video is played'); end

Here I want to control this loop by displaying Progress message just one time not everytime when frames grow.Because as soon as number of frames increase the message is iteratively occuring in matlab command window.How can I control this statement?,

Thanks

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Answer 1

Vishal Rane 2013-6-11

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Check the for loop counter when displaying the progress. You want to display progress only when counter is 1.

Use this if-else-end

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Algorithms Analyst 2013-6-11

Good.Actaully I am detecting blob from input video by subtracting background and getting binary image.So what I am trying to do is when the blob appear it shows message in command window as I did it like that using connected component labelling

measurements = regionprops(labeledImage,'BoundingBox','Centroid');

if isempty(measurements)

fprintf('there is nothing at frame',f);

else

fprintf('it detected at frame',f);

end

But hese two messages are appearing every iteration i want to restrit them just one time for example if something detected then it shows message when something is not then it show there is nothing.

Thanks

Algorithms Analyst 2013-6-11