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NCUEIR > College of Science > Graduate Institute of Photonics Technologies > Proceedings > Item 987654321/18243

Please use this identifier to cite or link to this item: http://ir.ncue.edu.tw/ir/handle/987654321/18243

Title:	Improvement of the Signal-to-noise Ratio of a Double Random Phase Encoding Encryption System
Authors:	Su, Wei-Chia;Wang, Bor;Sun, Ching-Cherng;Chang, Ming-Wen
Contributors:	光電科技研究所
Date:	2000
Issue Date:	2014-04-01T03:58:05Z
Publisher:	SPIE--The International Society for Optical Engineering
Abstract:	We investigate the tolerance to data loss of a double random phase encoding encryption system. The signal-to-noise ratio of the decrypted image is investigated when a part of the encrypted image is lost. The SNR can be enhanced by reducing the ratio of the sampling number of the image to the total sampling number when electronic implementation is performed. In optical implementation, the SNR can be increased by using a phase mask with higher spatial frequency. Both the theory and computer simulations are demonstrated.
Relation:	Algorithms and Systems for Optical Information Processing IV, Proc. SPIE., 4113: 181-186
Appears in Collections:	[Graduate Institute of Photonics Technologies] Proceedings

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