Image encryption based on pure intensity random coding and digital holography technique
| Autor: | Banghe Zhu, Shutian Liu, Haifa Zhao |
|---|---|
| Rok vydání: | 2003 |
| Předmět: |
business.industry
Computer science Phase (waves) Image processing Encryption Atomic and Molecular Physics and Optics Electronic Optical and Magnetic Materials Interferometry Optics Amplitude Computer vision Charge-coupled device Artificial intelligence Electrical and Electronic Engineering business Digital holography |
| Zdroj: | Optik. 114:95-99 |
| ISSN: | 0030-4026 |
| DOI: | 10.1078/0030-4026-00228 |
| Popis: | Summary We propose a novel image encryption method that combines the pure intensity random encoding and the digital holography technique. A phase-shifting interferometer records both phase and amplitude information of a complex object with a CCD sensor array. The encryption is performed by placing two pure intensity random masks between the image to be encrypted and an intensity recording device. Electronic decryption can be performed with fast Fresnel reconstruction procedure. Numerical simulation results show the validity of the algorithm and an optoelectronic implementation setup is also presented. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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