How to capture frames from video and display & compare those frames to detect edge detection ??
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Jay Patel
on 28 Oct 2013
Commented: Image Analyst
on 28 Oct 2013
Hi all,
I am new to MATLAB and want to capture video continuously and from that i want some frames to compare and want to detect the edge but i am not able to do this because when i ws capturing the video at that same time the video trigger can not increses it's value .
It is possible to capture the images or frames from video that is actually snapshot and display that snapshot or plot the different frames in one plot with the use of subplot ??
here is the code which i m trying and go into infinite loop. please help me out with this.
clc; clear; close all; vid = videoinput('winvideo'); preview(vid); get(vid); start(vid); while(vid.FramesAcquired<=10) vid.FramesPerTrigger = 9; vid.ReturnedColorspace = 'grayscale'; img1=getdata(vid); subplot(2,1,1); imshow(img1); set(gcf, 'Position', get(0,'Screensize')); img2= fullfile(pwd, 'try1.jpg'); imwrite(img1,img2); subplot(2,1,2); imshow(img2); frm1=getsnapshot(vid); pause(2); frm2=getsnapshot(vid); subplot(2,2,1); imshow(frm1); subplot(2,2,2); imshow(frm2); end delete(img2);
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Accepted Answer
Image Analyst
on 28 Oct 2013
Use your own counter instead of vid.FramesAcquired.
2 Comments
Image Analyst
on 28 Oct 2013
numberOfFramesProcessed = 0;
while numberOfFramesProcessed <= 10
% Your code goes here. Then increment:
numberOfFramesProcessed = numberOfFramesProcessed + 1;
end
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