EyeCanSee.py 文件源码

def __init__(self, center=int(cvsettings.CAMERA_WIDTH / 2), debug=False, is_usb_webcam=True, period_s=0.025):
        # Our video stream
        # If its not a usb webcam then get pi camera
        if not is_usb_webcam:
            self.vs = PiVideoStream(resolution=(cvsettings.CAMERA_WIDTH, cvsettings.CAMERA_HEIGHT))
            # Camera cvsettings
            self.vs.camera.shutter_speed = cvsettings.SHUTTER
            self.vs.camera.exposure_mode = cvsettings.EXPOSURE_MODE
            self.vs.camera.exposure_compensation = cvsettings.EXPOSURE_COMPENSATION
            self.vs.camera.awb_gains = cvsettings.AWB_GAINS
            self.vs.camera.awb_mode = cvsettings.AWB_MODE
            self.vs.camera.saturation = cvsettings.SATURATION
            self.vs.camera.rotation = cvsettings.ROTATION
            self.vs.camera.video_stabilization = cvsettings.VIDEO_STABALIZATION
            self.vs.camera.iso = cvsettings.ISO
            self.vs.camera.brightness = cvsettings.BRIGHTNESS
            self.vs.camera.contrast = cvsettings.CONTRAST

        # Else get the usb camera
        else:
            self.vs = WebcamVideoStream(src=0)
            self.vs.stream.set(cv2.CAP_PROP_FRAME_WIDTH, cvsettings.CAMERA_WIDTH)
            self.vs.stream.set(cv2.CAP_PROP_FRAME_HEIGHT, cvsettings.CAMERA_HEIGHT)

        # Has camera started
        self.camera_started = False
        self.start_camera()  # Starts our camera

        # To calculate our error in positioning
        self.center = center

        # To determine if we actually detected lane or not
        self.detected_lane = False

        # debug mode on? (to display processed images)
        self.debug = debug

        # Time interval between in update (in ms)
        # FPS = 1/period_s
        self.period_s = period_s

        # Starting time
        self.start_time = time.time()

    # Mouse event handler for get_hsv