See https://qiita.com/fan2tamo/items/36bc8f9657d1a430aa54.

Create IR Model

Learning MNIST and Create ONNX Model

python3 mnist.py

Convert ONNX Model to IR Model

cd C:\Program Files (x86)\IntelSWTools\openvino_2019.1.087\deployment_tools\model_optimizer\install_prerequisites
install_prerequisites_onnx.bat
python3 mo.py --input_model mnist.onnx --output_dir C:\Work\

Inference

src

See main.cpp.

Infer

infer.exe CPU C:\Work\mnist.xml "C:\Work\one.png"