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FastDeploy/examples/vision/classification/resnet/README_CN.md
Hu Chuqi bb96a6fe8f [Doc]Add English version of documents in examples (#1070)
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[English](README.md) | 简体中文
# ResNet准备部署模型
- ResNet部署实现来自[Torchvision](https://github.com/pytorch/vision/tree/v0.12.0)的代码,和[基于ImageNet2012的预训练模型](https://github.com/pytorch/vision/tree/v0.12.0)。
- 1[官方库](https://github.com/pytorch/vision/tree/v0.12.0)提供的*.pt通过[导出ONNX模型](#导出ONNX模型)操作后,可进行部署;
- 2自己数据训练的ResNet模型按照[导出ONNX模型](#%E5%AF%BC%E5%87%BAONNX%E6%A8%A1%E5%9E%8B)操作后,参考[详细部署文档](#详细部署文档)完成部署。
## 导出ONNX模型
导入[Torchvision](https://github.com/pytorch/vision/tree/v0.12.0),加载预训练模型,并进行模型转换,具体转换步骤如下。
```python
import torch
import torchvision.models as models
model = models.resnet50(pretrained=True)
batch_size = 1 #批处理大小
input_shape = (3, 224, 224) #输入数据,改成自己的输入shape
# #set the model to inference mode
model.eval()
x = torch.randn(batch_size, *input_shape) # 生成张量
export_onnx_file = "ResNet50.onnx" # 目的ONNX文件名
torch.onnx.export(model,
x,
export_onnx_file,
opset_version=12,
input_names=["input"], # 输入名
output_names=["output"], # 输出名
dynamic_axes={"input":{0:"batch_size"}, # 批处理变量
"output":{0:"batch_size"}})
```
## 下载预训练ONNX模型
为了方便开发者的测试下面提供了ResNet导出的各系列模型开发者可直接下载使用。下表中模型的精度来源于源官方库
| 模型 | 大小 | 精度 |
|:---------------------------------------------------------------- |:----- |:----- |
| [ResNet-18](https://bj.bcebos.com/paddlehub/fastdeploy/resnet18.onnx) | 45MB | |
| [ResNet-34](https://bj.bcebos.com/paddlehub/fastdeploy/resnet34.onnx) | 84MB | |
| [ResNet-50](https://bj.bcebos.com/paddlehub/fastdeploy/resnet50.onnx) | 98MB | |
| [ResNet-101](https://bj.bcebos.com/paddlehub/fastdeploy/resnet101.onnx) | 170MB | |
## 详细部署文档
- [Python部署](python)
- [C++部署](cpp)
## 版本说明
- 本版本文档和代码基于[Torchvision v0.12.0](https://github.com/pytorch/vision/tree/v0.12.0) 编写