SELF-ADAPTIVE IMAGE ENCRYPTION BASED ON MEMORY CELLULAR AUTOMATA

2011 ◽  
Vol 08 (03) ◽  
pp. 227-241 ◽  
Author(s):  
I. A. ISMAIL ◽  
A. A. ABDO ◽  
M. AMIN ◽  
H. DIAB
Keyword(s):  
Cellular Automata ◽  
Image Encryption ◽  
Image Data ◽  
Cellular Neural Network ◽  
The Self ◽  
Sequence Generation ◽  
Adaptive Encryption ◽  
Simulation Results ◽  
Reversible Cellular Automata ◽  
Self Adaptive

Based on memory reversible cellular automata, a new self-adaptive image encryption is proposed in this paper. The self-adaptive encryption is realized by dividing the image data in to equal halves and then encrypting each half of image data using other mutually. We utilize cellular neural network chaotic system as a pseudo-random key sequence generation. Simulation results on some gray level images confirm that the proposed algorithm can be realized easily while guaranteeing high security and sensitivity levels, and other properties such as randomness.

Design and vibration analysis of a self-adaptive piston in a novel nanoimprint system

2017 ◽  
Vol 69 (4) ◽  
pp. 591-597
Author(s):  
Chaoran Liu ◽  
Yufeng Su ◽  
Jinzhao Yue ◽  
Junjie Wang ◽  
Weiwei Xia ◽  
...  
Keyword(s):  
Nanoimprint Lithography ◽  
Vibration Analysis ◽  
Design Methodology ◽  
The Self ◽  
Ball Screw ◽  
Piston Rings ◽  
Content Type ◽  
Simulation Results ◽  
The One ◽  
Self Adaptive

Purpose A self-adaptive piston is designed for the compressional gas cushion press nanoimprint lithography system. It avoids the lube pollution and high wear of traditional piston. Design/methodology/approach The self-adaptive piston device consists of symmetrical piston bodies, piston rings and other parts. The two piston bodies are linked by a ball-screw. The locking nut adjusts the distance between two piston bodies to avoid the piston rings from being stuck. The piston rings are placed between two piston bodies. Findings The simulation results based on COMSOL indicate that cylinder vibration caused by self-adaptive piston is 15.9 times smaller than the one caused by a traditional piston. Originality/value The self-adaptive piston is superior to the traditional piston in decreasing cylinder vibration.

Self-Protection and Diversity in Self-Replicating Cellular Automata

2004 ◽  
Vol 10 (1) ◽  
pp. 83-98 ◽  
Author(s):  
Hiroki Sayama
Keyword(s):  
Cellular Automata ◽  
Cellular Automaton ◽  
The Self ◽  
Evolutionary System ◽  
Evolutionary Systems ◽  
Diversity Maintenance ◽  
Simulation Results ◽  
Self Protection ◽  
Positive Effect

The concept of self-protection, a capability of an organism to protect itself from exogenous attacks, is introduced into the design of artificial evolutionary systems as a possible method to create and maintain diversity in the population. Three different mechanisms of self-protection are considered and implemented on a cellular-automaton-based evolutionary system, the evoloop. Simulation results imply a positive effect of those mechanisms on diversity maintenance, especially when the self-protection is moderate so that it conserves both the attacker and the attacked. This letter briefly reports the models and the simulation results obtained using those models.

scholarly journals A Novel Image Encryption Scheme Based on Reversible Cellular Automata

2019 ◽  
Vol 1 (1) ◽  
Author(s):  
AliMohammad Latif ◽  
Zeinab Mehrnahad
Keyword(s):  
Cellular Automata ◽  
Cellular Automaton ◽  
Image Encryption ◽  
Experimental Results ◽  
Encryption Scheme ◽  
Encrypted Image ◽  
Reversible Cellular Automaton ◽  
Quantitative Performance ◽  
Image Pixels ◽  
Reversible Cellular Automata

In this paper, a new scheme for image encryption is presented by reversible cellular automata. The presented scheme is applied in three individual steps. Firstly, the image is blocked and the pixels are substituted by a reversible cellular automaton. Then, image pixels are scrambled by an elementary cellular automata and finally the blocks are attached and pixels are substituted by an individual reversible cellular automaton. Due to reversibility of used cellular automata, decryption scheme can reversely be applied. The experimental results show that encrypted image is suitable visually and this scheme has satisfied quantitative performance.

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