ultralytics/docs/en/reference/utils/nms.md
Glenn Jocher 3637f509dd
ultralytics 8.3.231 New Zensical docs refresh (#22761)
Signed-off-by: Glenn Jocher <glenn.jocher@ultralytics.com>
Co-authored-by: UltralyticsAssistant <web@ultralytics.com>
2025-11-23 19:53:50 +01:00

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description: Custom NMS implementation for Ultralytics YOLO with TorchNMS class for torchvision-free inference and fast-nms for oriented bounding boxes. Optimized for speed and accuracy.
keywords: NMS, non-maximum suppression, TorchNMS, YOLO, torchvision-free, rotated NMS, object detection, bounding boxes, IoU threshold, custom implementation
---
# Reference for `ultralytics/utils/nms.py`
!!! success "Improvements"
This page is sourced from [https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/nms.py](https://github.com/ultralytics/ultralytics/blob/main/ultralytics/utils/nms.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.utils.nms.TorchNMS
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## ::: ultralytics.utils.nms.non_max_suppression
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