Augmented reality on QR Code business card (OpenCV + ZBar + Optical flow)

Augmented Reality with QR Code can be used in many different situations. For example, to create AR business cards. To create Augmented Reality, using a QR Code, fast and high-quality tracking algorithm should be used. Existing open source libraries, like OpenCV or ZBAR, that allows QR Code detection, loses tracking in difficult situations. For example, when movements are fast, partial overlap, distortion or view from side. Using optical flow algorithm can solve this problem. This video shows the results of