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"RuntimeError: Frame didn't arrive within 5000"

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Sohampadhye1998
Hello I'm using realsense D455 camera on raspberry pi 4 4gb Ram using Ubuntu 20.04 os installed. realsense - viewer works fine for me But when I run the below code it throws the error ERROR] "RuntimeError: Frame didn't arrive within 5000" Code- import pyrealsense2 as rs import cv2 import numpy as np # Configure depth and color streams pipeline = rs.pipeline() config = rs.config() config.enable_stream(rs.stream.color, 640, 480, rs.format.bgr8, 30) # Start streaming pipeline.start(config) try:     while True:         # Wait for a coherent pair of frames: color and depth         frames = pipeline.wait_for_frames()         color_frame = frames.get_color_frame()                 if not color_frame:             continue                 # Convert the color frame to a numpy array         color_image = np.asanyarray(color_frame.get_data())         # Display the image         cv2.imshow('RealSense', color_image)         # Exit if ESC key is pressed         if cv2.waitKey(1) == 27:             break finally:     # Stop streaming     pipeline.stop() # Close all OpenCV windows cv2.destroyAllWindows()
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  • MartyG

    The RealSense SDK provides a bag frame extraction tool called rs-convert that can extract depth, RGB and IMU frames.  The IMU frames can only be extracted to the text-based .csv format (compatible with databases and spreadsheets) rather than an image file.

    https://github.com/IntelRealSense/librealsense/tree/master/tools/convert

     

    The tool is in C++ language rather than Python but if your librealsense installation includes the tools and examples then you should be able to find a pre-built executable version of it on your Ubuntu computer in the usr/local/bin folder. 

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  • Sohampadhye1998
    • Edited

    Hello MartyG

    Can you please tell me focal length and pixel size of image sensor in D455 camera.

    As per manual D450 has focal length of 1.93 mm but what about D455, and I didn't get the pixel size.

    Thank you.

     

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  • MartyG

    A D455 camera contains a D450 depth module board inside it.  So the 1.93 mm focal length listed in the data sheet document for the D450's left / right and RGB color sensors will be the same for D455.

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  • MartyG

    In regard to pixel size, in the link below an Intel RealSense team member states that pixel size for the D435i camera model is 3um x 3um and D455 has the same pixel size.  This pixel value comes from the size of the sensor's global shutter.

    https://github.com/IntelRealSense/librealsense/issues/6682

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