@article{Hasib_Nyeem_2020, title={Pixel Grouping of Digital Images for Reversible Data Hiding}, volume={24}, url={https://cyber.bibl.u-szeged.hu/index.php/actcybern/article/view/4016}, DOI={10.14232/actacyb.277104}, abstractNote={<p>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&nbsp;neighborhood pixels helps compute image groups for better embedding rate-distortion&nbsp;performance, only horizontal neighborhood pixel group of size 1×3 has so far been&nbsp;considered. In this paper, we formulate PG kernels of sizes 3×1, 2×3 and 3×2 and&nbsp;investigate their effect on the rate-distortion performance of a prominent PG-based&nbsp;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.&nbsp;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&nbsp;computational models of its key processes. Experimental results demonstrated that our&nbsp;proposed RDH scheme offers reasonably better&nbsp; embedding rate-distortion performance&nbsp;than the original scheme.</p&gt;}, number={4}, journal={Acta Cybernetica}, author={Hasib, Sultan Abdul and Nyeem, Hussain Md Abu}, year={2020}, month={Nov.}, pages={663-678} }