OFDM Based High Capacity Information Hiding in Grey Scale Image
Somnath Maiti1, Abhik Roy2, Tirtha Sankar Das3, Subir Kumar Sarkar4 

1Somnath Maiti, ETCE Department, Jadavpur University, Kolkata, India.
2Abhik Roy, ETCE Department, Jadavpur University, Kolkata, India.
3Tirtha Sankar Das, ETCE Department, RCC Institute of Information Technology, Kolkata, India.
4Subir Kumar Sarkar, ETCE Department, Jadavpur University, Kolkata, India.
Manuscript received on December 05, 2011. | Revised Manuscript received on December 17, 2011. | Manuscript published on January 05, 2012. | PP: 192-195 | Volume-1 Issue-6, January 2012. | Retrieval Number: F0296111611/2012©BEIESP
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© The Authors. Published By: Blue Eyes Intelligence Engineering and Sciences Publication (BEIESP). This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/)

Abstract: This paper proposes a robust information hiding method by utilizing the spectrum efficient OFDM technique applied on gray scale image onto another gray carrier image. For simplicity, the data mapping in complex domain we have used 4-QAM. A modified QIM technique for data embedding is used for improving robustness. But the robustness analysis is not a common practice for QIM based data hiding. The result shows a large amount of information hiding capability along with substantial improvement in robustness against intentional impairments. But the possibility of using OFDM technique in robust high capacity data hiding has drawn a very little attention to the researchers even today.
Keywords: OFDM, QIM, QAM, Capacity, Robustness.