QR-IO 🖨

Description

QR-IO is a mini-library for QR code generation & reading. It is based on the ISO/IEC 18004:2015 standard. The project utilizes OpenCV2 to generate the QR images. Currently supports generating QR codes only.

Features

• Easy-to-use C++ interface.
• Utilizes the OpenCV library for image processing and QR code generation.
• Generates high-quality QR code images.
• Uses the most efficient encoding for all strings that are either pure Kanji or do not contain any Kanji (Annex J).
• Automatic encoding.
• Manual ECI usage.
• Manual structured append without ECI.
• FNC1 encoding.
• Custom light & dark colors.

Upcoming features

• QR reading.
• Automatic structured append.
• Automatic Kanji encoding.

Requirements

Before running the program, ensure you have the following installed on your system:

• C++ Compiler that supports C++20.
• OpenCV2
• CMake

Usage

1. Clone the QR-IO repository to your local machine.
2. Add your main to the directory.
3. Modify the following section in the CMakeLists.txt file:

    ... 
    add_executable(
      QR_IO
      demo.cpp <- Replace with the name of your main file and add your files
    ...

5. Navigate to the directory & run the following commands:
   • cmake .
   • make
     • On Unix: ./QR_IO
     • On Windows: .\QR_IO

• You can check the demo.cpp for example usage.
• You can also use the pre-compiled executables included in the project.

Example QRs

• "This is a test" (1-L):

  

• "This is a test" (1-M):

  

• "This is a test" (1-Q):

  

• "This is a test" (1-H):

  

• "This is a test" (25-H):

  

• "This is a test" (1-H):

  

• "This is a test" (1-H):

  

• Check qrw_1 in demo.cpp:

  

• Check qrw_2 in demo.cpp:

  

• "This is a Kanji test: \u935F\uE4AA\u89D7\uE4AA!":

  

• "You can also use regular strings!":

  

• An innocent google search link ;) (non-malicious):

  

• "Hello world!" in binary: