Study of coding principle and detecting technology of diffractive composite spatial code

Xinrong Chen; Wang Zhou; Linsen Chen

doi:10.1117/12.481503

30 August 2002 Coding principle and detecting technology of diffractive composite spatial code

Xinrong Chen, Wang Zhou, Linsen Chen

Proceedings Volume 4924, Holography, Diffractive Optics, and Applications; (2002) https://doi.org/10.1117/12.481503
Event: Photonics Asia, 2002, Shanghai, China

Abstract

Diffractive composite spatial code is a novel concealed optical code. It use diffractive micro-gratings matrix as carrier of diffractive composite spatial code. When diffractive micro-gratings matrix is lighted with monochromatic plane wave, diffractive composite spatial code appears. With the aid of specific recognizer, meanings which diffractive composite spatial code represents will be read out. Coding principle and design ofdiffractive composite spatial code are introduced in details in this paper. Detecting technology of this code is explored, too. The analyzing indicates that the method of recognizing of diffractive composite spatial code is unsophisticated and feasible. These characteristics are very important and useful in security of document, bond and even web.

Citation Download Citation

Xinrong Chen, Wang Zhou, and Linsen Chen "Coding principle and detecting technology of diffractive composite spatial code", Proc. SPIE 4924, Holography, Diffractive Optics, and Applications, (30 August 2002); https://doi.org/10.1117/12.481503

ACCESS THE FULL ARTICLE

INSTITUTIONAL
Select your institution to access the SPIE Digital Library.

SELECT YOUR INSTITUTION

PERSONAL
Sign in with your SPIE account to access your personal subscriptions or to use specific features such as save to my library, sign up for alerts, save searches, etc.

PERSONAL SIGN IN

No SPIE Account? Create one

PURCHASE THIS CONTENT

SUBSCRIBE TO DIGITAL LIBRARY

50 downloads per 1-year subscription

Members: $195

Non-members: $335 ADD TO CART

25 downloads per 1 - year subscription

Members: $145

Non-members: $250 ADD TO CART

PURCHASE SINGLE ARTICLE

Includes PDF, HTML & Video, when available