Topics in this Issue
The double random phase encoding technique is examined to determine how, for both amplitude encoding (AE) and phase encoding (PE), the two decryption keys (the image and Fourier planes) affect the output gray scale image when they are in error. The decrypted images in the figure result from increasing amounts of random distribution of incorrect pixel values, which can represent an attacker having a partial key, in the Fourier plane, with (a) AE (note the Gaussian type noise), or (b) PE, or (c) partial image-plane key for PE (note the "salt and pepper" type noise). In (d) both keys are simultaneously in error for PE. For details, see the paper by Monaghan et al., pp. pp. 3808-3816.
- Dec 24 2014 : Season’s Greetings from OSA Publishing. Please note that our office will be closed for the holidays from 24 December 2014 17:00 EST through 2 January 2015 8:30 EST. If you require urgent assistance, please email our Customer Service department, and our Customer Service team will make every attempt to solve your problem or route it to the appropriate person during this time. As our Customer Service coverage will be limited while our offices are closed, please allow 24 hours for a response. Best wishes for a Happy New Year!
- Dec 19 2014 : Applied Optics Research - Yellowstone's Thermal Springs -- Their Colors Unveiled
- Dec 15 2014 : Biomedical Optics Express Research - Potential New Tool for Cervical Cancer Detection and Diagnosis
- Dec 15 2014 : Optica Research - Fraud-proof Credit Cards Possible with Quantum Physics
- Real-time, high-accuracy 3D imaging and shape measurement
- Supersonic laser propulsion
- Optical properties of metallic films for vertical-cavity...
- Optical properties of the metals Al, Co, Cu, Au, Fe, Pb,...
- Phase retrieval algorithms: a comparison
- Laser interaction with materials: introduction
- Fiber lasers and their applications [Invited]
- Laser Beams and Resonators
- Digital Holography and 3D Imaging: introduction
- Recent advances in digital holography [Invited]