Title :
Image Encryption Based on Random Fractional Discrete Cosine and Sine Transforms
Author :
Zhao, Hui ; Ran, Qiwen ; Ge, Guixia ; Ma, Jing ; Tan, Liying
Author_Institution :
Nat. Key Lab. of Tunable Laser Technol., Harbin Inst. of Technol., Harbin
Abstract :
We first give a new fractionalization of discrete cosine and sine transforms of types I, IV, V and VIII. The fractional discrete cosine and sine transforms with four random parameters are defined, to which we refer as random fractional discrete cosine and sine transforms. A novel image encryption algorithm based on random fractional discrete cosine or sine transform and random phase encoding technique is then proposed. Numerical simulation results are presented to verify its validity and efficiency.
Keywords :
cryptography; discrete cosine transforms; image coding; phase coding; image encryption algorithm; numerical simulation; phase encoding technique; random fractional discrete cosine transform; sine transform; Computer science; Computer science education; Cryptography; Discrete cosine transforms; Discrete transforms; Educational technology; Image coding; Laboratories; Numerical simulation; Radio access networks; discrete cosine transform; discrete sine transform; fractional operator; image encryption;
Conference_Titel :
Education Technology and Computer Science, 2009. ETCS '09. First International Workshop on
Conference_Location :
Wuhan, Hubei
Print_ISBN :
978-1-4244-3581-4
DOI :
10.1109/ETCS.2009.183
