Fast and low error color encrypted computer-generated hologram based on amplitude-phase modulation with a random mask for an identification tag application

详细信息	查看全文 | 推荐本文 |

• 作者：Hyunhwan Choi ; Ki-Mun Pak ; Yong-Hyub Won ; ^{yhwon@kaist.edu}
• 关键词：OCIS codes ; Computer holography ; Digital holography ; Discrete optical signal processing ; Image reconstruction techniques
• 刊名：Optics Communications
• 出版年：2012
• 期刊代码：50_00304018
• 类别：ph
• 出版时间：1 June, 2012
• 卷：285
• 期：12
• 页码：2809-2813
• 文件大小：1096 K

摘要

A new APM computer-generated hologram algorithm for minimizing DC components and more effective data recovery is presented for the purpose of an ID tag application. In this method, a technique of randomization of the input data is introduced prior to the Fourier transform. As a result, DC components are localized at the center region, which is only 1 data cell, regardless of input data. The size of the tag pattern is reduced 2.25 times using a color encryption technique. Our experimental result through the image captured by a camera also shows that approximately 50%damaged APM-CGH tags can be reconstructed at a low error rate of about 1.8%.