safety_analyzer/train_yolo.py

from ultralytics import YOLO
import logging

# Setup logging
logging.basicConfig(level=logging.INFO, format="%(asctime)s - %(levelname)s - %(message)s")
logger = logging.getLogger(__name__)

def train_yolov8():
    try:
        # Load a pretrained YOLOv8 model
        model = YOLO("yolov8n.pt")
        logger.info("Loaded pretrained YOLOv8n model")

        # Train the model
        model.train(
            data="path/to/data.yaml",  # Path to your data.yaml file
            epochs=100,                # Number of epochs
            imgsz=640,                 # Image size
            batch=16,                  # Batch size
            device=0,                  # Use GPU (0) if available
            patience=50,               # Early stopping patience
            project="runs/train",      # Output directory
            name="safety_model",       # Experiment name
            exist_ok=True
        )
        logger.info("Model training completed")

        # Save the trained model
        model.save("yolov8_safety.pt")
        logger.info("Saved trained model as yolov8_safety.pt")

    except Exception as e:
        logger.error(f"Error during training: {e}")
        raise

if __name__ == "__main__":
    logger.info("Starting YOLOv8 model training...")
    train_yolov8()