[Python] Velodyne Decoder - Data Parsing and Visualisation

Discussão em 'Python' iniciado por Stack, Julho 31, 2025.

  1. Stack

    Stack Membro Participativo

    I am having a velodyne lidar VLP 32C, my aim is to take data, parse and visualize. Below is the code I am using. I am getting the datapackets from the lidar but when trying to parse and visualize I am getting an error.

    import socket
    import numpy as np
    from velodyne_decoder.decoder import VLP32CDecoder


    # Configuration settings
    LIDAR_IP = "192.168.1.201"
    LIDAR_PORT = 2368

    # Create a socket to receive data from the LiDAR
    sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
    sock.bind(('', LIDAR_PORT))

    # Initialize the Velodyne decoder
    decoder = VLP32CDecoder()

    print(f"Listening for data from {LIDAR_IP} on port {LIDAR_PORT}")

    try:
    while True:
    data, addr = sock.recvfrom(1206) # Velodyne data packets are typically 1206 bytes
    if addr[0] == LIDAR_IP:
    # Decode the packet to a point cloud
    point_cloud = decoder.decode(data)

    # Convert to numpy array for further processing
    points = np.array(point_cloud.points) # Assuming 'points' is the attribute with XYZ coordinates
    intensities = np.array(point_cloud.intensities) # Assuming 'intensities' is the attribute with intensity values

    # Print a small sample of the parsed data
    print(f"Points: {points[:5]}")
    print(f"Intensities: {intensities[:5]}")

    # Here, you can further process the point cloud data, e.g., save to a file, visualize, etc.

    except KeyboardInterrupt:
    print("Stopping data capture.")

    finally:
    sock.close()
    print("Socket closed.")


    This the error I got:

    Traceback (most recent call last):
    File "velodynedecoder.py", line 3, in <module>
    from velodyne_decoder.decoder import VLP32CDecoder
    ModuleNotFoundError: No module named 'velodyne_decoder.decoder'


    Does velodyne decoder doesnot support VLP 32C? Can anyone help me on taking data and point cloud generation using this velodyne decoder for VLP 32C? Is there any other method to do this?

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