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74 lines
3.7 KiB
74 lines
3.7 KiB
---
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comments: true
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description: Explore RT-DETR, a high-performance real-time object detector. Learn how to use pre-trained models with Ultralytics Python API for various tasks.
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---
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# RT-DETR
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## Overview
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Real-Time Detection Transformer (RT-DETR) is an end-to-end object detector that provides real-time performance while maintaining high accuracy. It efficiently processes multi-scale features by decoupling intra-scale interaction and cross-scale fusion, and supports flexible adjustment of inference speed using different decoder layers without retraining. RT-DETR outperforms many real-time object detectors on accelerated backends like CUDA with TensorRT.
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**Overview of RT-DETR.** Model architecture diagram showing the last three stages of the backbone {S3, S4, S5} as the input
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to the encoder. The efficient hybrid encoder transforms multiscale features into a sequence of image features through intrascale feature interaction (AIFI) and cross-scale feature-fusion module (CCFM). The IoU-aware query selection is employed
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to select a fixed number of image features to serve as initial object queries for the decoder. Finally, the decoder with auxiliary
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prediction heads iteratively optimizes object queries to generate boxes and confidence scores ([source](https://arxiv.org/pdf/2304.08069.pdf)).
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### Key Features
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- **Efficient Hybrid Encoder:** RT-DETR uses an efficient hybrid encoder that processes multi-scale features by decoupling intra-scale interaction and cross-scale fusion. This design reduces computational costs and allows for real-time object detection.
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- **IoU-aware Query Selection:** RT-DETR improves object query initialization by utilizing IoU-aware query selection. This allows the model to focus on the most relevant objects in the scene.
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- **Adaptable Inference Speed:** RT-DETR supports flexible adjustments of inference speed by using different decoder layers without the need for retraining. This adaptability facilitates practical application in various real-time object detection scenarios.
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## Pre-trained Models
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Ultralytics RT-DETR provides several pre-trained models with different scales:
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- RT-DETR-L: 53.0% AP on COCO val2017, 114 FPS on T4 GPU
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- RT-DETR-X: 54.8% AP on COCO val2017, 74 FPS on T4 GPU
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## Usage
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### Python API
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```python
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from ultralytics import RTDETR
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model = RTDETR("rtdetr-l.pt")
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model.info() # display model information
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model.predict("path/to/image.jpg") # predict
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```
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### Supported Tasks
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| Model Type | Pre-trained Weights | Tasks Supported |
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|---------------------|---------------------|------------------|
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| RT-DETR Large | `rtdetr-l.pt` | Object Detection |
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| RT-DETR Extra-Large | `rtdetr-x.pt` | Object Detection |
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### Supported Modes
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| Mode | Supported |
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|------------|--------------------|
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| Inference | :heavy_check_mark: |
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| Validation | :heavy_check_mark: |
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| Training | :x: (Coming soon) |
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# Citations and Acknowledgements
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If you use RT-DETR in your research or development work, please cite the [original paper](https://arxiv.org/abs/2304.08069):
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```bibtex
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@misc{lv2023detrs,
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title={DETRs Beat YOLOs on Real-time Object Detection},
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author={Wenyu Lv and Shangliang Xu and Yian Zhao and Guanzhong Wang and Jinman Wei and Cheng Cui and Yuning Du and Qingqing Dang and Yi Liu},
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year={2023},
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eprint={2304.08069},
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archivePrefix={arXiv},
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primaryClass={cs.CV}
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}
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```
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We would like to acknowledge Baidu's [PaddlePaddle](https://github.com/PaddlePaddle/PaddleDetection) team for creating and maintaining this valuable resource for the computer vision community.
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