How can i adjust brightness of a live video in image acquisition?

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I am using the Image Acquisition Toolbox to create a simple interactive GUI that should allow the user to preview the image and dynamically adjust the brightness of the video feed.
I'm using a slider to adjust the value of brightness between(-64 to 64), code looks like this:
vid = videoinput('winvideo',1);
src = getselectedsource(vid);
preview(vid);
bri = get(handles.BrightnessSlider,'Value');
if(bri > -65 || bri < 65 )
stoppreview(vid);
src.Brightness = bri;
preview(vid);
end
Problem here is that brightness isn't changing when I move the slider, the value on slider does change.
Please help me solving this error. Thanks in advance.

Answers (1)

Walter Roberson
Walter Roberson on 20 Jan 2017
MATLAB does not use {} for code blocks.

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