Wednesday 20th of September 2017
 

Bit Position based Qualitative and Quantitative Analysis of DCT and Spatial Domain Stegnography


Sahib Khan, Muhammad Nawaz Khan and Somia Iqbal

This paper statistically analyze the effect of each bit position on Stego Image and its contribution towards signal to noise ratio (SNR) and peak signal to noise ratio (PSNR) in Image Stegnography using Discrete Cosine Transform. To statistically analyze SNR and PSNR the information is hidden in each least significant bit position of Discrete Cosine Transform (DCT) coefficients one by one and SNR and PSNR are calculated for each bit position of DCT coefficients. A comparison with the effect of each bit position on Stego Image and its contribution towards signal to noise ratio (SNR) and peak signal to noise ratio (PSNR) of Spatial domain Image Stegnography is also made and presented.

Keywords: Stegnography, Steganalysis, Discrete Cosine Transform.

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ABOUT THE AUTHORS

Sahib Khan
Engr. Sahib Khan got M.Sc. in Telecommunication Engineering from University of Engineering and Technology, Taxila in the year 2012 and B.Sc. in Telecommunication Engineering from University of Engineering and Technology, Peshawar in the year 2008. He currently holds the position of Lecturer in the Department of Electrical Engineering at University of Engineering and Technology, Peshawar. His research interests include Image and Signals Processing, Information Security and Antenna designing. He, along with his students, is developing and implementing Stegnographic techniques and algorithms, esp. Image and Audio Stegnography, in Spatial and Transform domains.

Muhammad Nawaz Khan
Muhammad Nawaz Khan is currently pursuing his BSc in Electrical Engineering at University of Engineering and Technology Peshawar. His research area is image processing and information security and is currently involve in a project related Information security under the supervision of Engr. Sahib Khan.

Somia Iqbal
Somia Iqbal is currently pursuing her BSc in Electrical Engineering at University of Engineering and Technology Peshawar. Her research area is image processing and information security and is currently involve in a project related Information security under the supervision of Engr. Sahib Khan.


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