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Face Authentication Application

Application: Overview

The face authentication application is a cutting-edge software that can validate individuals sitting in front of a camera and the face given in the document ID (either office, passport, etc.) . Using advanced computer vision algorithms and faceNet model, the software can accurately detect and validate faces in real-time.

The application is designed to be user-friendly and can be used in a wide range of settings, including airports, public buildings, workplaces, law enforcement, and retail environments. With a simple and intuitive interface, users can easily validate new images with the document image IDs.

This kind of application makes it easier to automate the authentication process, thus minimizing the redundant human intervention.

It has following camera input modes.

Mode RZ/V2L RZ/V2H
USB Camera Supported Supported
MIPI Camera Supported -

Supported Product

  • RZ/V2L Evaluation Board Kit (RZ/V2L EVK)
  • RZ/V2H Evaluation Board Kit (RZ/V2H EVK)

Demo

Following is the demo for RZ/V2L EVK.

Application: Requirements

Hardware Requirements

For Equipment Details
RZ/V2L RZ/V2L EVK Evaluation Board Kit for RZ/V2L.
Includes followings.
  • MIPI Camera Module(Google Coral Camera)
    Used as a camera input source.
  • MicroUSB to Serial Cable for serial communication.
AC Adapter USB Power Delivery adapter for the board power supply.
MicroHDMI Cable Used to connect the HDMI Monitor and the board.
RZ/V2L EVK has microHDMI port.
RZ/V2H RZ/V2H EVK Evaluation Board Kit for RZ/V2H.
AC Adapter USB Power Delivery adapter for the board power supply.
100W is required.
HDMI Cable Used to connect the HDMI Monitor and the board.
RZ/V2H EVK has HDMI port.
USB Camera Used as a camera input source.
Common USB Cable Type-C Connect AC adapter and the board.
HDMI Monitor Used to display the graphics of the board.
microSD card Used as the filesystem.
Must have over 4GB capacity of blank space.
Operating Environment: Transcend UHS-I microSD 300S 16GB
Linux PC Used to build application and setup microSD card.
Operating Environment: Ubuntu 20.04
SD card reader Used for setting up microSD card.
USB Hub Used to connect USB Keyboard and USB Mouse to the board.
USB Keyboard Used to type strings on the terminal of board.
USB Mouse Used to operate the mouse on the screen of board.

Note: All external devices will be attached to the board and does not require any driver installation (Plug n Play Type)

Connect the hardware as shown below.

RZ/V2L EVK RZ/V2H EVK

Note 1: When using the keyboard connected to RZ/V Evaluation Board, the keyboard layout and language are fixed to English.
Note 2: For RZ/V2H EVK, there are USB 2.0 and USB 3.0 ports.
USB camera needs to be connected to appropriate port based on its requirement.

Application: Build Stage

Note: User can skip to the next stage (deploy) if they do not want to build the application.
All pre-built binaries are provided.

Prerequisites

This section expects the user to have completed Step 5 of Getting Started Guide provided by Renesas.

After completion of the guide, the user is expected of following things.

  • AI SDK setup is done.

  • Following docker container is running on the host machine.

    Board Docker container
    RZ/V2L EVK rzv2l_ai_sdk_container
    RZ/V2H EVK rzv2h_ai_sdk_container

    Note: Docker environment is required for building the sample application.

Application File Generation

  1. On your host machine, copy the repository from the GitHub to the desired location.

    1. It is recommended to copy/clone the repository on the data folder, which is mounted on the Docker container.
    cd <path_to_data_folder_on_host>/data
    git clone https://github.com/renesas-rz/rzv_ai_sdk.git

    Note: This command will download the whole repository, which include all other applications.
    If you have already downloaded the repository of the same version, you may not need to run this command.

  2. Run (or start) the docker container and open the bash terminal on the container.
    E.g., for RZ/V2L, use the rzv2l_ai_sdk_container as the name of container created from rzv2l_ai_sdk_image docker image.

    Note that all the build steps/commands listed below are executed on the docker container bash terminal.

  3. Set your clone directory to the environment variable.

    export PROJECT_PATH=/drp-ai_tvm/data/rzv_ai_sdk
  4. Go to the application source code directory.

    cd ${PROJECT_PATH}/Q02_face_authentication/src
  5. Create and move to the build directory.

    mkdir -p build && cd build
  6. Build the application by following the commands below.
    For RZ/V2L

    cmake -DCMAKE_TOOLCHAIN_FILE=./toolchain/runtime.cmake ..
    make -j$(nproc)

    For RZ/V2H

    cmake -DCMAKE_TOOLCHAIN_FILE=./toolchain/runtime.cmake -DV2H=ON ..
    make -j$(nproc)
  7. The following application file would be generated in the ${PROJECT_PATH}/Q02_face_authentication/src/build directory

    • face_recognition

Application: Deploy Stage

Prerequisites

This section expects the user to have completed Step 7-1 of Getting Started Guide provided by Renesas.

After completion of the guide, the user is expected of following things.

  • microSD card setup is done.

File Configuration

For the ease of deployment all the deployable files and folders are provided in following folders.

Board EXE_DIR
RZ/V2L EVK exe_v2l
RZ/V2H EVK exe_v2h

Each folder contains following items.

File Details
facenet_model Model object files for deployment.
face_rec_bg.jpg Image for application background.
face_recognition Application file.

Instruction

  1. Copy the following files to the /home/root/tvm directory of the rootfs (SD Card) for the board.

    File Details
    All files in EXE_DIR directory Including deploy.so file.
    face_recognition application file Generated the file according to Application File Generation
  2. Check if libtvm_runtime.so exists under /usr/lib64 directory of the rootfs (SD card) on the board.

  3. Folder structure in the rootfs (SD Card) would look like:

    |-- usr
    |   `-- lib64
    |       `-- libtvm_runtime.so
    `-- home
        `-- root
            `-- tvm
                |-- facenet_model
                |   |-- deploy.json
                |   |-- deploy.params
                |   `-- deploy.so
                |-- face_rec_bg.jpg
                `-- face_recognition
    

Note: The directory name could be anything instead of tvm. If you copy the whole EXE_DIR folder on the board, you are not required to rename it tvm.

Application: Run Stage

Prerequisites

This section expects the user to have completed Step 7-3 of Getting Started Guide provided by Renesas.

After completion of the guide, the user is expected of following things.

  • The board setup is done.
  • The board is booted with microSD card, which contains the application file.

Instruction

  1. On Board terminal, go to the tvm directory of the rootfs.

    cd /home/root/tvm
  2. Run the application.

    • For USB Camera Mode
    ./face_recognition USB
    • For MIPI Camera Mode (RZ/V2L only)
    ./face_recognitionr MIPI

    Note: MIPI Camera Mode is only supported by RZ/V2L EVK.

  3. Following window shows up on HDMI screen.

    1. The application can be used to authenticate the real time image of the person with the face on the document ID.

    2. This application consists of three pages.

      1. The main page consists of Two buttons.

        • Add ID image: Button for taking pictures from the document IDs.
        • Validate: Button for validating the real face with document face ID.
      2. Then Click on the Add ID image button for recognizing the face from the document ID. We can see a new window. it contains two buttons.

        • Add Face: Button for taking pictures.
        • Back: It retrieves the previous page(Main page).
        1. The user have to align the documented face to the bounding box provided to be captured.
        2. Click Add Face button to capture the photo.
        3. User can Click Back button to retrieves the previous page(Main page).
        4. User can Mouse Double Click to terminate the application.
      3. Then click on the Validate button to capture the real time image of the person that needs to be validated. We can see a new Window. It contains two buttons.

        • Validate: It is used to capture the real time image.
        • Back: It retrieves the previous page(Main page).
        1. User need to align their face on the box shown on the display.
        2. Click Validate button to capture the real time image.Only 3 attempts of validating is provided. After that the application exit to initial state.
        3. User can Click Back button to retrieves the previous page(Main page).
        4. User can Mouse Double Click to terminate the application.
    3. Please go through the demo video to get a better picture of the sample application.

  4. Termination

    • Application can be terminated by clicking the left mouse double click.
    • Alternatively, to force close the application, switch from the application window to the terminal by pressing Super(windows key)+Tab and press CTRL + C.

Application: Configuration

AI Model

FaceNet model is used which provide the embedding vectors of the images.

The model used is the pre-trained model.
We then apply cosine similarity to match the incoming images.
The threshold kept for the match is 0.23.

AI inference time

Board AI model AI inference time
RZ/V2L EVK FaceNet Approximately 450ms
RZ/V2H EVK FaceNet Approximately 186ms

Processing

Processing RZ/V2L EVK RZ/V2H EVK
Pre-processing Processed by CPU. Processed by CPU.
Inference Processed by DRP-AI and CPU. Processed by DRP-AI and CPU.
Post-processing Processed by CPU. Processed by CPU.

Image buffer size

Board Camera capture buffer size HDMI output buffer size
RZ/V2L EVK VGA (640x480) in YUYV format HD (1280x720) in BGRA format
RZ/V2H EVK VGA (640x480) in YUYV format FHD (1920x1080) in BGRA format

Reference

License

Apache License 2.0
For third party OSS library, please see the source code file itself.