COLOUR IMAGE ENCRYPTION AND COMPRESSION USING HYPER-CHAOTIC SYSTEM AND DCT DICTIONARY

Authors

  • Varsha Sreedharan
  • Annie George

DOI:

https://doi.org/10.37591/jomtra.v5i1.1596

Abstract

Image encryption and compression has received a lot of attention nowadays since large amount of information is transmitted through public networks. Encrypting the image after compression will sacrifice the flexibility and increases the complexity of the process. So the better method is the joint operation of encryption and compression in single step. The hyper-chaos based colour image image encryption and compression which is based on the scrambling and diffusion is presented here. It uses the discrete cosine transform and the DCT dictionary to represents the image pixels sparsely and uses the diffusion algorithm with the help of hyper-chaotic system for the simultaneous image encryption and compression. The test results show that the proposed compression and encryption algorithm has high security and good performance in compression.The compression and encryption is implemented in MATLAB.

Keywords: Compression, encryption, DCT, hyper-chaotic system, diffusion

Cite this Article
Varsha Sreedharan, Annie George. Colour Image Encryption and Compression using Hyper-Chaotic System and Discrete Cosine Transform Dictionary. Journal of Multimedia Technology & Recent Advancements. 2018; 5(1): 27–32p.


Downloads

Published

2018-07-17

Issue

Vol. 5 No. 1 (2018)

Section

Research Articles

License

Declaration and Copyright Transfer Form

(to be completed by authors)

I/ We, the undersigned author(s) of the submitted manuscript, hereby declare, that the above manuscript which is submitted for publication in the STM Journals(s), is not published already in part or whole (except in the form of abstract) in any journal or magazine for private or public circulation, and, is not under consideration of publication elsewhere.

  • I/We will not withdraw the manuscript after 1 week of submission as I have read the Author Guidelines and will adhere to the guidelines.
  • I/We Author(s ) have niether given nor will give this manuscript elsewhere for publishing after submitting in STM Journal(s).
  • I/ We have read the original version of the manuscript and am/ are responsible for the thought contents embodied in it. The work dealt in the manuscript is my/ our own, and my/ our individual contribution to this work is significant enough to qualify for authorship.
  •  I/We also agree to the authorship of the article in the following order:

Author’s name                                    

 

1. ________________

2. ________________

3. ________________

4. ________________

 

We  Author(s) tick this box and would request you to consider it as our signature as we agree to the terms of this Copyright Notice, which will apply to this submission if and when it is published by this journal.