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FastDeploy/examples/vision/tracking/pptracking/cpp/README_CN.md
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[English](README.md) | 简体中文
# PP-Tracking C++部署示例
本目录下提供`infer.cc`快速完成PP-Tracking在CPU/GPU以及GPU上通过TensorRT加速部署的示例。
在部署前,需确认以下两个步骤
- 1. 软硬件环境满足要求,参考[FastDeploy环境要求](../../../../../docs/cn/build_and_install/download_prebuilt_libraries.md)
- 2. 根据开发环境下载预编译部署库和samples代码参考[FastDeploy预编译库](../../../../../docs/cn/build_and_install/download_prebuilt_libraries.md)
以Linux上 PP-Tracking 推理为例在本目录执行如下命令即可完成编译测试支持此模型需保证FastDeploy版本0.7.0以上(x.x.x>=0.7.0)
```bash
mkdir build
cd build
# 下载FastDeploy预编译库用户可在上文提到的`FastDeploy预编译库`中自行选择合适的版本使用
wget https://bj.bcebos.com/fastdeploy/release/cpp/fastdeploy-linux-x64-x.x.x.tgz
tar xvf fastdeploy-linux-x64-x.x.x.tgz
cmake .. -DFASTDEPLOY_INSTALL_DIR=${PWD}/fastdeploy-linux-x64-x.x.x
make -j
# 下载PP-Tracking模型文件和测试视频
wget https://bj.bcebos.com/paddlehub/fastdeploy/fairmot_hrnetv2_w18_dlafpn_30e_576x320.tgz
tar -xvf fairmot_hrnetv2_w18_dlafpn_30e_576x320.tgz
wget https://bj.bcebos.com/paddlehub/fastdeploy/person.mp4
# CPU推理
./infer_demo fairmot_hrnetv2_w18_dlafpn_30e_576x320 person.mp4 0
# GPU推理
./infer_demo fairmot_hrnetv2_w18_dlafpn_30e_576x320 person.mp4 1
# GPU上TensorRT推理
./infer_demo fairmot_hrnetv2_w18_dlafpn_30e_576x320 person.mp4 2
```
以上命令只适用于Linux或MacOS, Windows下SDK的使用方式请参考:
- [如何在Windows中使用FastDeploy C++ SDK](../../../../../docs/cn/faq/use_sdk_on_windows.md)
## PP-Tracking C++接口
### PPTracking类
```c++
fastdeploy::vision::tracking::PPTracking(
const string& model_file,
const string& params_file = "",
const string& config_file,
const RuntimeOption& runtime_option = RuntimeOption(),
const ModelFormat& model_format = ModelFormat::PADDLE)
```
PP-Tracking模型加载和初始化其中model_file为导出的Paddle模型格式。
**参数**
> * **model_file**(str): 模型文件路径
> * **params_file**(str): 参数文件路径
> * **config_file**(str): 推理部署配置文件
> * **runtime_option**(RuntimeOption): 后端推理配置默认为None即采用默认配置
> * **model_format**(ModelFormat): 模型格式默认为Paddle格式
#### Predict函数
> ```c++
> PPTracking::Predict(cv::Mat* im, MOTResult* result)
> ```
>
> 模型预测接口,输入图像直接输出检测结果。
>
> **参数**
>
> > * **im**: 输入图像注意需为HWCBGR格式
> > * **result**: 检测结果包括检测框跟踪id各个框的置信度对象类别idMOTResult说明参考[视觉模型预测结果](../../../../../docs/api/vision_results/)
- [模型介绍](../../)
- [Python部署](../python)
- [视觉模型预测结果](../../../../../docs/api/vision_results/)
- [如何切换模型推理后端引擎](../../../../../docs/cn/faq/how_to_change_backend.md)