---
title: trackers.utils.kalman_filter API Reference
description: Explore Kalman filter implementations like KalmanFilterXYAH and KalmanFilterXYWH for tracking bounding boxes in image space using Ultralytics.
keywords: Kalman Filter, Object Tracking, Python, Ultralytics, YOLO, Bounding Boxes, Image Processing
---

# Reference for `ultralytics/trackers/utils/kalman_filter.py`

!!! success "Improvements"

    This page is sourced from [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/trackers/utils/kalman_filter.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/trackers/utils/kalman_filter.py). Have an improvement or example to add? Open a [Pull Request](https://docs.ultralytics.com/help/contributing) — thank you! 🙏

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## ::: ultralytics.trackers.utils.kalman_filter.KalmanFilterXYAH

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## ::: ultralytics.trackers.utils.kalman_filter.KalmanFilterXYWH

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