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Set ROI for RGB Kamera in Python D455

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Arne Luken

Hello, I am using a D455 camera in my project. I know that in the RealSense Viewer, one can set the ROI (Region of Interest) for the IR cameras and the RGB camera separately. I have managed to set the ROI for the IR camera, but I can't find a solution to set the ROI of the RGB camera through my Python script. Is it possible to set the ROI for the RGB camera in Python? I can load a configuration in advanced mode if that helps.

Thanks Arne

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  • MartyG

    Hi Arne Luken  The best available reference for defining a ROI, including one for the RGB sensor, using Python code is at the link below.

    https://github.com/IntelRealSense/librealsense/issues/3427

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  • Arne Luken

    Hi, thanks again. I have found that as well but it is not working for the rgb sensor on the D455. I have the same issue as migel in your link. Any other Idea?

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  • MartyG

    Does it make a difference if you change is_depth_sensor() to is_color_sensor()

     

    dev = profile.get_device()
    for sensor in dev.sensors:
    if sensor.is_color_sensor():
    roi_sensor = sensor.as_roi_sensor()
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  • Arne Luken

    Hey, i tried that:

    Traceback (most recent call last):
      File "/media/tec/SSDOrin/yolov8/roi_tst copy.py", line 17, in <module>
        roi_sensor.set_region_of_interest(sensor_roi)
    RuntimeError: hwmon command 0x75( b4 21c 140 3c0 ) failed (response -6= Invalid parameter)

    import pyrealsense2 as rs

    config = rs.config()
    config.enable_stream(rs.stream.color, 1280, 720, rs.format.rgb8, 30)
    config.enable_stream(rs.stream.depth, 848, 480, rs.format.z16, 30)

    pipeline = rs.pipeline()
    profile = pipeline.start(config)
    dev = profile.get_device()
    for sensor in dev.sensors:
    if sensor.is_color_sensor():
    roi_sensor = sensor.as_roi_sensor()

    sensor_roi = roi_sensor.get_region_of_interest()
    sensor_roi.min_x, sensor_roi.max_x = 320, 960
    sensor_roi.min_y, sensor_roi.max_y = 180, 540
    roi_sensor.set_region_of_interest(sensor_roi)
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  • MartyG

    If that code did not work then there are not any other references available for setting an RGB ROI unfortunately as it is very rare to do so with code.  I do apologize.

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  • Arne Luken

    i got it working if i put this before setting the new roi of the color sensor. It's not needed for the depth sensor. Do you know why?

    frames = pipeline.wait_for_frames()
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