Python imutils.video.VideoStream() Examples

The following are 5 code examples of imutils.video.VideoStream(). You can vote up the ones you like or vote down the ones you don't like, and go to the original project or source file by following the links above each example. You may also want to check out all available functions/classes of the module imutils.video , or try the search function .
Example #1
Source File: Camera.py    From Facial-Recognition-Attendance-System with MIT License 8 votes vote down vote up 
def start_capture(self, height=None, width=None, usingPiCamera=IS_RASPBERRY_PI, ):
        import imutils
        from imutils.video import VideoStream
        resolution = (self.height, self.width)
        if height:
            if width:
                resolution = (height, width)
        print("Camera Resolution:", resolution)
        cf = VideoStream(usePiCamera=usingPiCamera,
                         resolution=resolution,
                         framerate=30).start()
        self.current_frame = cf
        time.sleep(2)

        if not usingPiCamera:
            frame = imutils.resize(self.current_frame.read(), width=resolution[0], height=resolution[1])
        # Stream started, call current_frame.read() to get current frame
Example #2
Source File: camera.py    From mqtt-camera-streamer with GNU General Public License v3.0 8 votes vote down vote up 
def main():
    client = get_mqtt_client()
    client.connect(MQTT_BROKER, port=MQTT_PORT)
    time.sleep(4)  # Wait for connection setup to complete
    client.loop_start()

    # Open camera
    camera = VideoStream(src=VIDEO_SOURCE, framerate=FPS).start()
    time.sleep(2)  # Webcam light should come on if using one

    while True:
        frame = camera.read()
        np_array_RGB = opencv2matplotlib(frame)  # Convert to RGB

        image = Image.fromarray(np_array_RGB)  #  PIL image
        byte_array = pil_image_to_byte_array(image)
        client.publish(MQTT_TOPIC_CAMERA, byte_array, qos=MQTT_QOS)
        now = get_now_string()
        print(f"published frame on topic: {MQTT_TOPIC_CAMERA} at {now}")
        time.sleep(1 / FPS)
Example #3
Source File: Camera.py    From SmoothStream with GNU General Public License v3.0 7 votes vote down vote up 
def start_capture(self, height=None, width=None, usingPiCamera=IS_RASPBERRY_PI, ):
        import imutils
        from imutils.video import VideoStream
        resolution = (self.height, self.width)
        if height:
            if width:
                resolution = (height, width)
        cf = VideoStream(usePiCamera=usingPiCamera,
                         resolution=resolution,
                         framerate=32).start()
        self.current_frame = cf
        time.sleep(2)

        if not usingPiCamera:
            frame = imutils.resize(self.current_frame.read(), width=resolution[0])
        # Stream started, call current_frame.read() to get current frame
Example #4
Source File: tracker.py    From telloCV with Apache License 2.0 6 votes vote down vote up 
def main():
    """Handles inpur from file or stream, tests the tracker class"""
    arg_parse = argparse.ArgumentParser()
    arg_parse.add_argument("-v", "--video",
                           help="path to the (optional) video file")
    args = vars(arg_parse.parse_args())

    # define the lower and upper boundaries of the "green"
    # ball in the HSV color space. NB the hue range in
    # opencv is 180, normally it is 360
    green_lower = (50, 50, 50)
    green_upper = (70, 255, 255)
    # red_lower = (0, 50, 50)
    # red_upper = (20, 255, 255)
    # blue_lower = (110, 50, 50)
    # upper_blue = (130, 255, 255)

    # if a video path was not supplied, grab the reference
    # to the webcam
    if not args.get("video", False):
        vid_stream = VideoStream(src=0).start()

    # otherwise, grab a reference to the video file
    else:
        vid_stream = cv2.VideoCapture(args["video"])

    # allow the camera or video file to warm up
    time.sleep(2.0)
    stream = args.get("video", False)
    frame = get_frame(vid_stream, stream)
    height, width = frame.shape[0], frame.shape[1]
    greentracker = Tracker(height, width, green_lower, green_upper)

    # keep looping until no more frames
    more_frames = True
    while more_frames:
        greentracker.track(frame)
        frame = greentracker.draw_arrows(frame)
        show(frame)
        frame = get_frame(vid_stream, stream)
        if frame is None:
            more_frames = False

    # if we are not using a video file, stop the camera video stream
    if not args.get("video", False):
        vid_stream.stop()

    # otherwise, release the camera
    else:
        vid_stream.release()

    # close all windows
    cv2.destroyAllWindows()
Example #5
Source File: tracker.py    From telloCV with Apache License 2.0 6 votes vote down vote up 
def get_frame(vid_stream, stream):
    """grab the current video frame"""
    frame = vid_stream.read()
    # handle the frame from VideoCapture or VideoStream
    frame = frame[1] if stream else frame
    # if we are viewing a video and we did not grab a frame,
    # then we have reached the end of the video
    if frame is None:
        return None
    else:
        frame = imutils.resize(frame, width=600)
        return frame