Pixel Grouping of Digital Images for Reversible Data Hiding

Sultan Abdul Hasib; Hussain Md Abu Nyeem

doi:10.14232/actacyb.277104

Sultan Abdul Hasib Department of Electrical, Electronic and Communication Engineering (EECE), Military Institute of Science and Technology (MIST), Mirpur Cantonment, Dhaka-1216, Bangladesh https://orcid.org/0000-0003-1335-0053
Hussain Md Abu Nyeem Department of Electrical, Electronic and Communication Engineering (EECE), Military Institute of Science and Technology (MIST), Mirpur Cantonment, Dhaka-1216, Bangladesh https://orcid.org/0000-0003-4839-5059

DOI: https://doi.org/10.14232/actacyb.277104

Keywords: pixel value ordering, reversible data hiding, prediction error expansion, reversible embedding

Abstract

Pixel Grouping (PG) of digital images has been a key consideration in recent development of the Reversible Data Hiding (RDH) schemes. While a PG kernel with neighborhood pixels helps compute image groups for better embedding rate-distortion performance, only horizontal neighborhood pixel group of size 1×3 has so far been considered. In this paper, we formulate PG kernels of sizes 3×1, 2×3 and 3×2 and investigate their effect on the rate-distortion performance of a prominent PG-based RDH scheme. Specially, a kernel of size 3×2 (or 2×3) that creates a pair of pixel-trios having triangular shape and offers a greater possible correlation among the pixels. This kernel thus can be better utilized for improving a PG-based RDH scheme. Considering this, we develop and present an improved PG-based RDH scheme and the computational models of its key processes. Experimental results demonstrated that our proposed RDH scheme offers reasonably better embedding rate-distortion performance than the original scheme.

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Author Biography

Sultan Abdul Hasib, Department of Electrical, Electronic and Communication Engineering (EECE), Military Institute of Science and Technology (MIST), Mirpur Cantonment, Dhaka-1216, Bangladesh

Sultan A Hasib received the B.Sc. degree in Electrical and Electronic Engineering (EEE) from the Rajshahi University of Engineering and Technology (RUET). He is currently pursuing the MSc in EEE at the Military Institute of Science and Technology (MIST). He has contributed to the development of national defense academic and research sector with a number of successful training courses and projects. His research interests include digital image processing and data hiding. He is a member of the Institute of Engineers, Bangladesh (IEB).