save snapshot image in a variable within a loop!!
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please need help in this why the data(i) variable in while loop give me an error here I want to take a picture after each 5 second and I need it continuous so I used while(1) ...
vid = videoinput('winvideo',1);
set(vid, 'FramesPerTrigger', Inf);
set(vid, 'ReturnedColorspace', 'rgb');
i = 0;
while(1)
data(i) = getsnapshot(vid);
imshow(data(i));
i=i+1;
pause(5);
end
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Jan
2017년 4월 4일
You mention an error. Then please post the message. It is easier to suggest an improvement than to guess the problem.
채택된 답변
Image Analyst
2017년 4월 4일
Get rid of the (i) and have just data, or better yet, a more descriptive filename:
for f = 1 : 1000 % view and save 1000 frames then quit.
thisFrame = getsnapshot(vid);
imshow(thisFrame);
drawnow;
baseFileName = sprintf('Frame %3.3d.png', f);
fullFileName = fullfile(folder, baseFileName);
imwrite(thisFrame, fullFileName);
end
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추가 답변 (1개)
Joseph Cheng
2017년 4월 4일
편집: Joseph Cheng
2017년 4월 4일
from what i see get snapshot returns a NxMx(1 for mono 3 for color) and you're trying to stuff it into a 1x1. what you should try is i=1 for start as data(0) isn't how matlab works. and put data as data(:,:,i) for monochrome as you'll be putting a NxM into data's NxMx1 indexes. change the data() into a cell array if you want to store it as an rgb image.
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