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MATLAB camera gives dark image.?

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Nimisha
Nimisha 2016-4-5
评论： Image Analyst 2016-4-23
clear all;clc
a = imaqhwinfo;
[camera_name, camera_id, format] = getCameraInfo(a);
vid = videoinput(camera_name, camera_id, format);
set(vid, 'ReturnedColorSpace', 'RGB');
%vid = videoinput('winvideo',1, 'YUV2_1280x720')
img = getsnapshot(vid);
When i capture image from this writtern code, it captures image immediately, and not giving time for camera to set its resolution and image seems black and dark.
How to give some time to camera for waiting to capture good image..?

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回答（1 个）

Image Analyst
Image Analyst 2016-4-5
Either set the exposure:
src = getselectedsource(vidobj);
src.Exposure = newValue; % Make it higher for brighter images.
Or open up the iris diaphragm, if the camera lens has one.
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Nimisha
Nimisha 2016-4-23
i did not know what is the code syntax to change frame rate
Image Analyst
Image Analyst 2016-4-23
Try
src.FrameRate = 10;
or whatever you used. Maybe you called it input1 instead of src, if so use input1.FrameRate = 10.

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