'**SUMMARY**
Extract an Image from the Camera, returning the value.  No matter
what the image characteristics on the camera, the Image returned
will be RGB 8 bit depth, if camera is in greyscale mode it will
be 3 identical channels.
**EXAMPLE**
>>>c = VimbaCamera()
>>>c.getImage().show()'

def getImage(self):

    if self.threaded:
        self._thread.lock.acquire()
        try:
            img = self._buffer.pop()
            self._lastimage = img
        except IndexError:
            img = self._lastimage
        self._thread.lock.release()
    else:
        img = self._captureFrame()
    return img
