Pedestrian-Vehicle-Bike & License Plate Demo

This application demonstrates how to run the Pedestrian-Vehicle-Bike and License Plate models, which detect pedestrians, vehicles, bicycles and license plates respectively, and are both SSD based.

The goal of this demo is to showcase the following:

• To show OpenVINO's async API running inference in parallel, thus showcasing a simple, but extensible code sample for how the OpenVINO async API can be leveraged (ie. by running two different models at the same time).
• A self-contained C++ code sample on OpenVINO, and avoiding the use of the Open Model Zoo demo internal library, allowing users to quickly see which code is relevant to the demo.

Requires OpenCV4 and OpenVINO.

This application has been tested on OpenCV 4.7.0, OpenCV 4.2.0 and OpenVINO 2023.1.0.

How It Works

The demo application accepts several command line arguments for file paths (models and video input), and executes using the OpenVINO™ runtime plugin.

The demo can be stopped by pressing the "Esc" button.

Preparing to Run

The list of models supported by the demo is in the models.lst file, which can be used as a parameter for the Open Model Zoo Model Downloaders.

omz_downloader --precisions FP16 --list models.lst --o build

Supported & Tested Models:

• FP16/person-vehicle-bike-detection-2002
• FP16/vehicle-license-plate-detection-barrier-0106

Running

Run the application with --help to see available flags:

 usage: ./demo [--help] --in VIDEO_INPUT --pb PATH_TO_person-vehicle-bike-detection_xml --lp PATH_TO_vehicle-license-plate-detection-barrier_xml

Options:
  --lp \<vehicle-license-plate-detection-barrier xml path>
  --pb \<person-vehicle-bike-detection xml path>
  --in \<input video>

When options are not set, the application runs with the following defaults:

 --in cars.mp4
 --pb intel/person-vehicle-bike-detection-2002/FP16/person-vehicle-bike-detection-2002.xml
 --lp intel/vehicle-license-plate-detection-barrier-0106/FP16/vehicle-license-plate-detection-barrier-0106.xml

This allows for a quick testing setup:

 mkdir build && cd build
 cmake ..
 make
 omz_downloader --precisions FP16 --list ../models.lst
 ./demo --in <input video>

Video inputs can be a video file, or an IP webcam:

./demo --in cars.mp4

./demo --in http://192.168.1.1:4747/video

The demo can be stopped by pressing the "Esc" button.

Demo Output

The demo produces a window where you can see inference take place in real-time - drawing bounding boxes around pedestrians, bicycles, vehicles and license plates.