Title :
Similar-short Periodicity Analysis and Application in Image Compression Encryption of Digital Chaos
Author :
Geng, Xiaoli ; Ding, Qun
Author_Institution :
Key Lab. of Electron. Eng., Heilongjiang Univ., Harbin, China
Abstract :
As digital chaos is affected by the limited precision of computer, chaotic sequence properties present short periodicity. For the phenomenon of digital chaos, the paper analyzes similar-short periodicity of digital chaos and puts forward a novel generator of digital chaos key sequence. Meanwhile, we detail the DCT (Discrete Cosine Transformation) compression and Wavelet compression method, and then make comparison for their different performances. Finally, this paper selects the better compressed image, and then uses new chaotic sequence to encrypt the compressed image.
Keywords :
chaos; cryptography; data compression; discrete cosine transforms; image coding; image sequences; wavelet transforms; DCT compression; chaotic sequence properties; digital chaos; digital chaos key sequence; discrete cosine transformation; image compression; image compression encryption; similar-short periodicity analysis; wavelet compression method; Chaotic communication; Correlation; Discrete cosine transforms; Encryption; Image coding; digital chaos; image compression; image encryption; periodicity analysis;
Conference_Titel :
Chaos-Fractals Theories and Applications (IWCFTA), 2012 Fifth International Workshop on
Conference_Location :
Dalian
Print_ISBN :
978-1-4673-2825-8
DOI :
10.1109/IWCFTA.2012.44
