Hello,
def create_pipeline(window="video", fps = 30):
print(window)
dict = {'1080': dai.ColorCameraProperties.SensorResolution.THE_1080_P, '12mp': dai.ColorCameraProperties.SensorResolution.THE_12_MP, '4k': dai.ColorCameraProperties.SensorResolution.THE_4_K}
pipeline = dai.Pipeline()
pipeline.setXLinkChunkSize(0) # might decrease the latency
camRgb = pipeline.create(dai.node.ColorCamera)
camRgb.setInterleaved(False) # True: BGR, False: RGB
camRgb.setFps(fps)
camRgb.setColorOrder(dai.ColorCameraProperties.ColorOrder.RGB)
rgbOut = pipeline.create(dai.node.XLinkOut) # LinkOut node is used to send data from the device to the host via XLink
rgbOut.setStreamName("rgb")
rgbOut.input.setBlocking(False)
rgbOut.input.setQueueSize(1)
sensorRes = '4k'
args.res = sensorRes
camRgb.setResolution(dict[sensorRes]) # Internal Downscaling. It reduces the image res. while keeping aspect ratio and FOV.
return pipeline
args.height = camRgb.getVideoHeight()
I set the camera sensor resolution to '4k' here. So the frame height should be 2160 pixels. However, in my rgb message, the obtained frame rate is 1080:
pipeline = create_pipeline(window='video', fps=FPS)
# Connect to device and start pipeline
with dai.Device() as device: # DepthAI’s API, however, is synchronous. This means that the API calls will block the main thread until the operation is completed. \
device.startPipeline(pipeline)
msg = device.getOutputQueue('rgb', maxSize=4, blocking=False).tryGet()
if msg is not None:
# This timestamp represents the time when the frame was captured by the camera sensor, since it is rolling shutter, middle exposure time is obtained.
ts = msg.getTimestamp(dai.CameraExposureOffset.MIDDLE).total_seconds()
frameRgb = msg.getCvFrame()
cv2.imshow("video", frameRgb)
frame_height = frameRgb.shape[0]
if cv2.waitKey(1) == ord('q'):
break
else:
logging.debug(f"[LOOP] [RGB] FRAME MSG is: {msg}. NO RGB frame detected yet or another thread is using the data.")
Then, this printing:
print(f"[MATH] FRAME HEIGHT FROM MSG OF CAMERA: {frame_height} | DEFINED FRAME HEIGHT: {args.height} -> SHOULD BE THE SAME")
gives me:
[MATH] FRAME HEIGHT FROM MSG OF CAMERA: 1080 | DEFINED FRAME HEIGHT: 2160 -> SHOULD BE THE SAME
What might the problem here?
Thanks
Uce
