Patent ID: 7221760

Claim:
A method of encrypting a set of data, the method comprising: generating an original set of data regarding a 3D input scene with multiple perspectives; generating a reference set of data; encoding the reference set of data; and combining the original set of data with the encoded reference set of data to generate an encrypted set of data; wherein the encoding of the reference set of data comprises phase encoding the reference set of data; wherein the phase encoding of the reference set of data comprises introducing a random phase into the reference set of data; and further comprising recording the encrypted set of data in a digital hologram; wherein the recording of the encrypted set of data in a hologram comprises recording the encrypted set of data in a hologram according to the equation: I p ( x,y )=[ A H ( x,y )] 2 +[A R ( x,y )] 2 +2 A H ( x,y ) A R ( x,y )cos[φ H ( x,y )−φ R ( x,y )−Δφ p ]; and wherein said φ E (x,y) is expressed as ϕ E ⁡ ( x , y ) = arctan ⁡ ( I 4 - I 2 I 1 - I 3 ) is the encrypted phase and said A E (x,y) is expressed as A E ⁡ ( x , y ) = 1 4 ⁡ [ ( I 1 - I 3 ) 2 + ( I 4 - I 2 ) 2 ] 1 / 2 is the encrypted amplitude.