How to adjust Brightness , contrast using VideoStream
Ajinkz opened this issue · comments
Just like this, we get the value of brightness and other parameters when using cv2. VideoCapture(0)
cap.get(cv2.CAP_PROP_BRIGHTNESS)
cap.get(cv2.CAP_PROP_CONTRAST )
cap.get(cv2.CAP_PROP_SATURATION)
cap.get(cv2.CAP_PROP_GAIN)
How to get these values when using VideoStream?
With the current implementation you cannot. I would suggest you subclass VideoStream and allow those methods to be set via the constructor. Another option would be to create the cv2.VideoCapture object, manually set any parameters, and then pass the cap object into VideoStream so you can enjoy the benefit of threaded frame access.
Adrian, can you please show an example of how this would be done?
I tried:
camera = PiCamera()
rawCapture = PiRGBArray(camera)
camera.capture(rawCapture, format="bgr")
vs = VideoStream(src=camera).start()
I also tried:
vs = VideoStream(src=rawCapture).start()
neither of these work, Argument 'index' is required to be an int.
I'm lost...