Skip to content

LiDAR Object List Schema

Root Message

Field Type Description
frame_count int Sequential frame counter
timestamp int Microseconds since Jan 1, 1970
objects array Visible objects

Object Fields

Field Type Description
id int Unique ID per running instance
uuid string Globally unique identifier
primary_sensor string Lidar serial number
distance_to_primary_sensor float Distance in meters
num_points_from_primary_sensor int Points from primary sensor
num_points int Total object points
num_failed_returns int Failed point returns
classification string PERSON, BICYCLE, VEHICLE, LARGEVEHICLE, UNKNOWN, PROSPECT
classification_confidence float 0–1 confidence
sub_classification string pedestrian, car, truck, bicycle, bus, trailer
sub_classification_confidence float 0–1 confidence
initial_position vector Initial XYZ or geo-coordinates
position vector Current XYZ or geo-coordinates
position_uncertainty vector Position variance (m²)
velocity vector Velocity (m/s)
velocity_uncertainty vector Velocity variance
orientation quaternion Orientation in world frame
heading float Rotation about Z-axis
dimension vector Length, width, height
creation_ts int First visible timestamp
update_ts int Last updated timestamp