Fast image recognition based on phase only correlation using holographic memory

我们开发了一个带有光学图像相关器的人脸识别系统，该系统使用全息存储器。基于纯相位相关的图像相关器具有处理速度快、识别错误率低的特点。通过使用相位码加密来保护面部数据库的信息。利用立体视觉技术提供的三维人脸数据，利用计算机图形技术自动重建旋转到虚拟摄像机前的人脸图像，提高了识别对拍摄角度的鲁棒性。

We developed a face recognition system with an optical image correlator using a holographic memory. The image correlator based on the phase-only correlation offers high speed processing and low recognition error rate. The information of the facial database is protected by using a phase code encryption. The facial image rotated to a position in front of the virtual camera is reconstructed automatically with computer graphics using three-dimensional facial data provided by the stereovision technology, which offer robustness improvement of recognition against shooting angle.