Title
Optical encryption for large-sized images using random phase-free method.
Abstract
We propose an optical encryption framework that can encrypt and decrypt large-sized images beyond the size of the encrypted image using our two methods: random phase-free method and scaled diffraction. In order to record the entire image information on the encrypted image, the large-sized images require the random phase to widely diffuse the object light over the encrypted image; however, the random phase gives rise to the speckle noise on the decrypted images, and it may be difficult to recognize the decrypted images. In order to reduce the speckle noise, we apply our random phase-free method to the framework. In addition, we employ scaled diffraction that calculates light propagation between planes with different sizes by changing the sampling rates.
Year
Venue
Field
2015
CoRR
Optics,Encryption,Sampling (statistics),Speckle noise,Diffraction,Physics
DocType
Volume
Citations 
Journal
abs/1503.00360
0
PageRank 
References 
Authors
0.34
0
10
Name
Order
Citations
PageRank
Tomoyoshi Shimobaba13714.61
Takashi Kakue22412.04
Yutaka Endo383.16
Ryuji Hirayama4106.02
Daisuke Hiyama500.34
Satoki Hasegawa631.74
Yuki Nagahama752.11
Marie Sano831.74
Takashige Sugie922.10
Tomoyoshi Ito104319.59