TFLite,ONNX,CoreML,TensorRT Export
📚 This guide explains how to export a trained YOLOv5 🚀 model from PyTorch to ONNX and TorchScript formats.
开始之前
克隆 repo 并将requirements.txt安装在 Python>=3.8.0环境中安装 requirements txt,包括 PyTorch>=1.8.模型和数据集会自动从最新的YOLOv5 版本下载。
git clone https://github.com/ultralytics/yolov5 # clone
cd yolov5
pip install -r requirements.txt # install
对于 TensorRT 导出示例(需要GPU )请参阅我们的 Colab 笔记本 附录部分。
格式
YOLOv5 有 11 种格式正式支持推理:
💡 专业提示:导出到ONNX 或OpenVINO ,可将CPU 的速度提高 3 倍。请参见CPU Benchmarks。💡 ProTip:导出到TensorRT ,速度可提高 5 倍GPU 。请参见GPU Benchmarks。
格式 | export.py --include |
模型 |
---|---|---|
PyTorch | - | yolov5s.pt |
TorchScript | torchscript |
yolov5s.torchscript |
ONNX | onnx |
yolov5s.onnx |
OpenVINO | openvino |
yolov5s_openvino_model/ |
TensorRT | engine |
yolov5s.engine |
CoreML | coreml |
yolov5s.mlmodel |
TensorFlow SavedModel | saved_model |
yolov5s_saved_model/ |
TensorFlow GraphDef | pb |
yolov5s.pb |
TensorFlow 轻型 | tflite |
yolov5s.tflite |
TensorFlow 边缘TPU | edgetpu |
yolov5s_edgetpu.tflite |
TensorFlow.js | tfjs |
yolov5s_web_model/ |
PaddlePaddle | paddle |
yolov5s_paddle_model/ |
基准
以下基准测试在配备YOLOv5 教程的 Colab Pro 笔记本电脑上运行 .重现:
Colab Pro V100GPU
benchmarks: weights=/content/yolov5/yolov5s.pt, imgsz=640, batch_size=1, data=/content/yolov5/data/coco128.yaml, device=0, half=False, test=False
Checking setup...
YOLOv5 🚀 v6.1-135-g7926afc torch 1.10.0+cu111 CUDA:0 (Tesla V100-SXM2-16GB, 16160MiB)
Setup complete ✅ (8 CPUs, 51.0 GB RAM, 46.7/166.8 GB disk)
Benchmarks complete (458.07s)
Format mAP@0.5:0.95 Inference time (ms)
0 PyTorch 0.4623 10.19
1 TorchScript 0.4623 6.85
2 ONNX 0.4623 14.63
3 OpenVINO NaN NaN
4 TensorRT 0.4617 1.89
5 CoreML NaN NaN
6 TensorFlow SavedModel 0.4623 21.28
7 TensorFlow GraphDef 0.4623 21.22
8 TensorFlow Lite NaN NaN
9 TensorFlow Edge TPU NaN NaN
10 TensorFlow.js NaN NaN
Colab ProCPU
benchmarks: weights=/content/yolov5/yolov5s.pt, imgsz=640, batch_size=1, data=/content/yolov5/data/coco128.yaml, device=cpu, half=False, test=False
Checking setup...
YOLOv5 🚀 v6.1-135-g7926afc torch 1.10.0+cu111 CPU
Setup complete ✅ (8 CPUs, 51.0 GB RAM, 41.5/166.8 GB disk)
Benchmarks complete (241.20s)
Format mAP@0.5:0.95 Inference time (ms)
0 PyTorch 0.4623 127.61
1 TorchScript 0.4623 131.23
2 ONNX 0.4623 69.34
3 OpenVINO 0.4623 66.52
4 TensorRT NaN NaN
5 CoreML NaN NaN
6 TensorFlow SavedModel 0.4623 123.79
7 TensorFlow GraphDef 0.4623 121.57
8 TensorFlow Lite 0.4623 316.61
9 TensorFlow Edge TPU NaN NaN
10 TensorFlow.js NaN NaN
导出训练有素的YOLOv5 模型
此命令将预训练的 YOLOv5s 模型导出为TorchScript 和ONNX 格式。 yolov5s.pt
是 "小型 "机型,是第二小的机型。其他选择包括 yolov5n.pt
, yolov5m.pt
, yolov5l.pt
和 yolov5x.pt
与 P6 对应的是,即 yolov5s6.pt
或您自己定制的培训检查点,即 runs/exp/weights/best.pt
.有关所有可用型号的详细信息,请参阅我们的 README。 桌.
💡 专业提示:添加 --half
to export models at FP16 half precision for smaller file sizes
输出:
export: data=data/coco128.yaml, weights=['yolov5s.pt'], imgsz=[640, 640], batch_size=1, device=cpu, half=False, inplace=False, train=False, keras=False, optimize=False, int8=False, dynamic=False, simplify=False, opset=12, verbose=False, workspace=4, nms=False, agnostic_nms=False, topk_per_class=100, topk_all=100, iou_thres=0.45, conf_thres=0.25, include=['torchscript', 'onnx']
YOLOv5 🚀 v6.2-104-ge3e5122 Python-3.8.0 torch-1.12.1+cu113 CPU
Downloading https://github.com/ultralytics/yolov5/releases/download/v6.2/yolov5s.pt to yolov5s.pt...
100% 14.1M/14.1M [00:00<00:00, 274MB/s]
Fusing layers...
YOLOv5s summary: 213 layers, 7225885 parameters, 0 gradients
PyTorch: starting from yolov5s.pt with output shape (1, 25200, 85) (14.1 MB)
TorchScript: starting export with torch 1.12.1+cu113...
TorchScript: export success ✅ 1.7s, saved as yolov5s.torchscript (28.1 MB)
ONNX: starting export with onnx 1.12.0...
ONNX: export success ✅ 2.3s, saved as yolov5s.onnx (28.0 MB)
Export complete (5.5s)
Results saved to /content/yolov5
Detect: python detect.py --weights yolov5s.onnx
Validate: python val.py --weights yolov5s.onnx
PyTorch Hub: model = torch.hub.load('ultralytics/yolov5', 'custom', 'yolov5s.onnx')
Visualize: https://netron.app/
导出的 3 个模型将与原始PyTorch 模型一起保存:
建议使用Netron Viewer对导出的模型进行可视化:
导出模型使用示例
detect.py
对导出的模型进行推理:
python detect.py --weights yolov5s.pt # PyTorch
yolov5s.torchscript # TorchScript
yolov5s.onnx # ONNX Runtime or OpenCV DNN with dnn=True
yolov5s_openvino_model # OpenVINO
yolov5s.engine # TensorRT
yolov5s.mlmodel # CoreML (macOS only)
yolov5s_saved_model # TensorFlow SavedModel
yolov5s.pb # TensorFlow GraphDef
yolov5s.tflite # TensorFlow Lite
yolov5s_edgetpu.tflite # TensorFlow Edge TPU
yolov5s_paddle_model # PaddlePaddle
val.py
对导出的模型进行验证:
python val.py --weights yolov5s.pt # PyTorch
yolov5s.torchscript # TorchScript
yolov5s.onnx # ONNX Runtime or OpenCV DNN with dnn=True
yolov5s_openvino_model # OpenVINO
yolov5s.engine # TensorRT
yolov5s.mlmodel # CoreML (macOS Only)
yolov5s_saved_model # TensorFlow SavedModel
yolov5s.pb # TensorFlow GraphDef
yolov5s.tflite # TensorFlow Lite
yolov5s_edgetpu.tflite # TensorFlow Edge TPU
yolov5s_paddle_model # PaddlePaddle
将PyTorch Hub 与导出的YOLOv5 模型一起使用:
import torch
# Model
model = torch.hub.load("ultralytics/yolov5", "custom", "yolov5s.pt")
model = torch.hub.load("ultralytics/yolov5", "custom", "yolov5s.torchscript ") # TorchScript
model = torch.hub.load("ultralytics/yolov5", "custom", "yolov5s.onnx") # ONNX Runtime
model = torch.hub.load("ultralytics/yolov5", "custom", "yolov5s_openvino_model") # OpenVINO
model = torch.hub.load("ultralytics/yolov5", "custom", "yolov5s.engine") # TensorRT
model = torch.hub.load("ultralytics/yolov5", "custom", "yolov5s.mlmodel") # CoreML (macOS Only)
model = torch.hub.load("ultralytics/yolov5", "custom", "yolov5s_saved_model") # TensorFlow SavedModel
model = torch.hub.load("ultralytics/yolov5", "custom", "yolov5s.pb") # TensorFlow GraphDef
model = torch.hub.load("ultralytics/yolov5", "custom", "yolov5s.tflite") # TensorFlow Lite
model = torch.hub.load("ultralytics/yolov5", "custom", "yolov5s_edgetpu.tflite") # TensorFlow Edge TPU
model = torch.hub.load("ultralytics/yolov5", "custom", "yolov5s_paddle_model") # PaddlePaddle
# Images
img = "https://ultralytics.com/images/zidane.jpg" # or file, Path, PIL, OpenCV, numpy, list
# Inference
results = model(img)
# Results
results.print() # or .show(), .save(), .crop(), .pandas(), etc.
OpenCV DNN 推断
OpenCV inference with ONNX models:
python export.py --weights yolov5s.pt --include onnx
python detect.py --weights yolov5s.onnx --dnn # detect
python val.py --weights yolov5s.onnx --dnn # validate
C++ 推理
YOLOv5 OpenCV DNN C++ 对导出的ONNX 模型示例进行推理:
- https://github.com/Hexmagic/ONNX-yolov5/blob/master/src/test.cpp
- https://github.com/doleron/yolov5-opencv-cpp-python
YOLOv5 OpenVINO C++ 推理示例
- https://github.com/dacquaviva/yolov5-openvino-cpp-python
- https://github.com/UNeedCryDear/yolov5-seg-opencv-dnn-cpp
TensorFlow.js 网络浏览器推理
支持的环境
Ultralytics 提供了一系列随时可用的环境,每个环境都预装了基本的依赖项,如 CUDA、CUDNN、 Python和 PyTorch等基本依赖项,以便启动您的项目。
- 免费GPU 笔记本:
- Google 云计算 GCP 快速入门指南
- 亚马逊 AWS 快速入门指南
- Azure.AzureML 快速入门指南AzureML 快速入门指南
- Docker: Docker 快速入门指南
项目现状
此徽章表示YOLOv5 GitHub Actions 的所有持续集成(CI)测试均已成功通过。这些 CI 测试严格检查了YOLOv5 在训练、验证、推理、导出和基准等多个关键方面的功能和性能。它们确保在 macOS、Windows 和 Ubuntu 上运行的一致性和可靠性,每 24 小时和每次新提交时都会进行一次测试。