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Add C++ demo for LPD-YuNet license plate detection #311

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8c1fb28
Add C++ demo for LPD-YuNet
sunshiqin3630-ship-it Jun 1, 2026
9aaf6f4
Set C++ standard for LPD-YuNet demo
sunshiqin3630-ship-it Jun 2, 2026
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12 changes: 12 additions & 0 deletions models/license_plate_detection_yunet/CMakeLists.txt
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Original file line number Diff line number Diff line change
@@ -0,0 +1,12 @@
cmake_minimum_required(VERSION 3.24.0)
project(opencv_zoo_license_plate_detection_yunet)

set(CMAKE_CXX_STANDARD 11)
set(OPENCV_VERSION "4.10.0")
set(OPENCV_INSTALLATION_PATH "" CACHE PATH "Where to look for OpenCV installation")

# Find OpenCV
find_package(OpenCV ${OPENCV_VERSION} REQUIRED HINTS ${OPENCV_INSTALLATION_PATH})

add_executable(demo demo.cpp)
target_link_libraries(demo ${OpenCV_LIBS})
22 changes: 21 additions & 1 deletion models/license_plate_detection_yunet/README.md
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Expand Up @@ -9,17 +9,37 @@ Please note that the model is trained with Chinese license plates, so the detect

## Demo

Run the following command to try the demo:
### Python

Run the following commands to try the demo:

```shell
# detect on camera input
python demo.py
# detect on an image
python demo.py --input /path/to/image -v

# get help regarding various parameters
python demo.py --help
```

### C++

Install latest OpenCV and CMake >= 3.24.0 to get started with:

```shell
# A typical and default installation path of OpenCV is /usr/local
cmake -B build -D OPENCV_INSTALLATION_PATH=/path/to/opencv/installation .
cmake --build build

# detect on camera input
./build/demo
# detect on an image
./build/demo -i=/path/to/image -v
# get help messages
./build/demo -h
```

### Example outputs

![lpd](./example_outputs/lpd_yunet_demo.gif)
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