Build NCNN following this tutorial: [Build for Windows x64 using VS2017](https://github.com/Tencent/ncnn/wiki/how-to-build#build-for-windows-x64-using-visual-studio-community-2017)
### Step5.
Add `ncnn_DIR` = `YOUR_NCNN_PATH/build/install/lib/cmake/ncnn` to system environment variables.
Build project: Open x64 Native Tools Command Prompt for VS 2019 or 2017
Build NCNN following this tutorial: [Build for Linux / NVIDIA Jetson / Raspberry Pi](https://github.com/Tencent/ncnn/wiki/how-to-build#build-for-linux)
[Intel's OpenVINO Toolkit](https://software.intel.com/content/www/us/en/develop/tools/openvino-toolkit.html). Most of the implements in this fold are same as *demo_ncnn*.
**Recommand** to use the xxx.tar.gz file to install instead of github method.
## Install OpenVINO Toolkit
Go to [OpenVINO HomePage](https://software.intel.com/content/www/us/en/develop/tools/openvino-toolkit.html)
Download a suitable version and install.
Follow the official Get Started Guides: https://docs.openvinotoolkit.org/latest/get_started_guides.html
## Set the Environment Variables
### Windows:
Run this command in cmd. (Every time before using OpenVINO)
```cmd
<INSTSLL_DIR>\openvino_2021\bin\setupvars.bat
```
Or set the system environment variables once for all:
Download PicoDet openvino model [PicoDet openvino model download link](https://paddledet.bj.bcebos.com/deploy/third_engine/picodet_m_416_openvino.zip).
move picodet openvino model files to the demo's weight folder. Then run these commands: