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please any help to CHANGE THIS CODE to acquire one gray image per 3 minute

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mangood UK
mangood UK on 3 Apr 2013
hi i have this code that take video and many frame
all what i want is to take one gray image and one frame only avery 3 minute
imaqreset;
obj = videoinput('winvideo',1,'YUY2_640x480');
% triggerconfig(obj,'manual');
set(obj,'FramesPerTrigger',Inf);
set(obj,'ReturnedColorspace','RGB');
obj.FrameGrabInterval = 1;
framesneed = 1;
start(obj);
while(obj.FramesAcquired<=framesneed)
RGB2=getsnapshot(obj);
imshow(RGB2);
pause(3);
end
stop(obj);
delete(obj);

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Answers (2)

Mahdi
Mahdi on 3 Apr 2013
Change the pause line to pause(180). It reads it in seconds.

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mangood UK
mangood UK on 3 Apr 2013
thier is aproblem
my webcam have high resolution as i think
but in matlab say maximum resolution is only 640*480
how to solve this
can any suggestion
regards

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Walter Roberson
Walter Roberson on 4 Apr 2013
Please show us the output of
devinfo = imaqhwinfo('winvideo', 1);
devinfo.SupportedFormats
mangood UK
mangood UK on 6 Apr 2013
hi walter
sorry for delay
this is the output of your code
Columns 1 through 2
'YUY2_160x120' 'YUY2_320x240'
Column 3
'YUY2_640x480'

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