libdecodeqr What's this? "libdecodeqr" is a C/C++ library for decoding QR code based on JIS X 0510 and ISO/IEC18004. This library is able to decode various image formats whether it's taken from a file, webcam, scanner, or any other image formats available. Features Support various image formats and input devices. Support multi platforms. Hi-Speed decoding. Completely Free. Requirements g++ / VC++6