# \#roboflow

**URL:** https://www.robotexchange.io/tag/roboflow/117.md

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## [How to train a YOLO OBB model and get the center and angle of detections](https://www.robotexchange.io/t/how-to-train-a-yolo-obb-model-and-get-the-center-and-angle-of-detections/4702)

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**Author:** [@thijs](https://www.robotexchange.io/u/thijs)\
**Replies:** 0\
**Last updated:** [September 2, 2026, 12:17am UTC](https://www.robotexchange.io/t/how-to-train-a-yolo-obb-model-and-get-the-center-and-angle-of-detections/4702 "2026-09-02T00:17:08Z")

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Based on contributions by sarahstam, 20129556. A regular YOLO bounding box is always axis-aligned, so it can’t tell you how an object is rotated. An oriented bounding box (OBB) model fits a rotated rectangle to each obj…

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## [How to train a YOLO object detection model with Roboflow and Ultralytics](https://www.robotexchange.io/t/how-to-train-a-yolo-object-detection-model-with-roboflow-and-ultralytics/4700)

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**Author:** [@thijs](https://www.robotexchange.io/u/thijs)\
**Replies:** 0\
**Last updated:** [September 2, 2026, 12:17am UTC](https://www.robotexchange.io/t/how-to-train-a-yolo-object-detection-model-with-roboflow-and-ultralytics/4700 "2026-09-02T00:17:03Z")

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Based on contributions by StevenVanDerGaag, Mathijs, aashish. Once you have an annotated dataset (see How to annotate and label images in Roboflow for YOLO training), you can train your own YOLO model with the Ultralyti…

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## [How to annotate and label images in Roboflow for YOLO training](https://www.robotexchange.io/t/how-to-annotate-and-label-images-in-roboflow-for-yolo-training/4699)

<div class="topic-metadata">

**Author:** [@thijs](https://www.robotexchange.io/u/thijs)\
**Replies:** 0\
**Last updated:** [September 2, 2026, 12:17am UTC](https://www.robotexchange.io/t/how-to-annotate-and-label-images-in-roboflow-for-yolo-training/4699 "2026-09-02T00:17:00Z")

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Based on contributions by Mark.jensen, Rafika. Before you can train a YOLO model you need a labelled image dataset: a set of images with a box (or polygon) drawn around every object you want to detect. Roboflow is a fre…