Protobuf Python bindings for A42 sensor data
Project description
📦 A42 Protobuf Bindings (a42_proto)
Dieses Python-Paket enthält die Protobuf-Bindings für Sensordaten im A42-Format. Es erlaubt das einfache Einlesen und Verarbeiten von LiDAR-Scans und zugehörigen Objektinformationen.
🔽 Datendownload
📥 Installation
pip install a42_proto
🧪 Beispielskripte
analyze_proto.py– aggregierte Auswertung über Frames, Scans, Punkte, Objektevisualize_pointcloud.py– zeigt eine Punktwolke in Open3D
📄 Datenstruktur
Die .pb-Dateien enthalten serialisierte Frame-Nachrichten:
-
Frame
enthält:frame_timestamp_ns: globaler Zeitstempellidars: Liste vonLidarScan
-
LidarScan
enthält:laser_name: Sensor-ID (enum)scan_timestamp_ns: Zeitstempel des Scanspointcloud.points: Liste von 3D-Punkten (LidarPoint)object_list.objects: erkannte Objekte (ObjectBBox)calibration:SensorCalibrationmit extrinsischer Pose
-
SensorCalibration
enthält:sensor_name: Klartextnameextrinsic.matrix: 4×4-Transform (row-major, Länge 16)- optionale Felder: FOV, Winkelauflösung, Scan-Modus
-
LidarPoint
Felder:x,y,z,intensity,timestamp_offset_ns -
ObjectBBox
Felder:position.x/y/z(Mittelpunkt der Box)dimension.x/y/z(Länge, Breite, Höhe)pointcloud.points(Punkte innerhalb der Box)
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