We propose an integral imaging tabletop three-dimensional (3D) display system. The system uses a dynamic tilted barrier array combined with a high-brightness two-dimensional display panel and lens array to provide tabletop 3D images with a complete 360° viewing zone. Besides, we propose a high-efficient elemental image array (EIA) generation method based on the backward ray-tracing technique for the integral imaging tabletop 3D display system. The EIA can be obtained in one rendering step by calculating the backward rays from all viewpoints to the corresponding pixels of the EIA. The experimental results verify the feasibility of the integral imaging tabletop 3D display system and the high-efficient EIA generation method.
In this paper, we proposed a novel optical encryption and decryption method of gray image based on the computer-generated hologram (CGH), the chaos theory and the logical modulation. In the encryption process, the hologram, which is gotten by Fresnel diffraction from the gray image, is modulated with the chaotic sequence, and the output is encryption image. The decryption is an inverse process of encryption. Experiment results verified the security and robustness of the proposed approach. Moreover, the proposed encryption method could be applied in where requires more security and more flexibility as the field of national defense science and technology.
Access to the requested content is limited to institutions that have purchased or subscribe to SPIE eBooks.
You are receiving this notice because your organization may not have SPIE eBooks access.*
*Shibboleth/Open Athens users─please
sign in
to access your institution's subscriptions.
To obtain this item, you may purchase the complete book in print or electronic format on
SPIE.org.
INSTITUTIONAL Select your institution to access the SPIE Digital Library.
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.