Security authentication with a three-dimensional optical phase code using random forest classifier: an overview
Adam S. Markman, Artur Carnicer, Bahram Javidi · Proceedings of SPIE, the International Society for Optical Engineering/Proceedings of SPIE · 2017
We overview our recent work [1] on utilizing three-dimensional (3D) optical phase codes for object authentication using the random forest classifier. A simple 3D optical phase code (OPC) is generated by combining multiple diffusers and glass slides. This tag is then placed on a quick-response (QR) code, which is a barcode capable of storing information and can be scanned under non-uniform illumination conditions, rotation, and slight degradation. A coherent light source illuminates the OPC and the transmitted light is captured by a CCD to record the unique signature. Feature extraction on the signature is performed and inputted into a pre-trained random-forest classifier for authentication.