Abstract
We present an alternative scheme to perform a multiple encrypting technique based on the use of a Joint Transform Correlator architecture. The basic approach relies on using an extra random phase mask placed before the correlator input plane, where we select different disjoint regions to encode each input object. In this way we avoid the cross talking when reconstructing the encoded objects. We experimentally validated the procedure using a photorefractive crystal as a storing medium. Full text: PDF
Highlights
We present an alternative scheme to perform a multiple encrypting technique based on the use of a Joint Transform Correlator architecture
This scheme is known as Double Random Phase Encryption (DRPE)
Encryption techniques imply that the input image should not be recovered without employing the correct encoding key
Summary
We present an alternative scheme to perform a multiple encrypting technique based on the use of a Joint Transform Correlator architecture. Conventional optical image-encryption methods are based on the 4-f correlator architecture that uses two random phase masks [1]. The phase-conjugated beams of the encrypted data allow to obtain the input image [3,4,5]. Encryption techniques imply that the input image should not be recovered without employing the correct encoding key.
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