Joint Source Coding and Encryption using Chaos and Fractals
MSF Seminar
- When?
- Tuesday 12 June 2012, 11:00 to 12:00
- Where?
- 39 BB 02
- Open to:
- Public, Staff, Students
- Speaker:
- Dr. Kwok-Wo Wong, City University of Hong Kong
Source coding and encryption are the major operations required in the transmission of large amount of confidential information via a public network. Traditionally, these operations are performed independently. For example, the source sequence is first compressed using arithmetic coding; then the compressed sequence is encrypted using Advanced Encryption Standard (AES). In this seminar, two applications of nonlinear systems for joint source coding and encryption will be presented. For the lossless reconstruction of general binary sequences, a simple piecewise linear chaotic map is employed for simultaneous arithmetic coding and encryption. For lossy image compression, the integration of selective encryption in fractal image coding will be described.
Biography
Dr. K.-W. Wong graduated with a BSc(EE) degree from The Chinese University of Hong Kong and a PhD degree from City University of Hong Kong. Currently, he is an Associate Professor in Department of Electronic Engineering, City University of Hong Kong. His research interests focus on the application of chaos and nonlinear systems for source coding and cryptography. He is an Associate Editor of International Journal of Bifurcation and Chaos (IJBC), an Editor of The HKIE Transactions, and Mathematical Problems in Engineering, respectively.
