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An RGB colour image steganography scheme using overlapping block-based pixel-value differencing
This paper presents a steganographic scheme based on the RGB colour cover image. The secret message bits are embedded into each colour pixel sequentially by the pixel-value differencing (PVD) technique. PVD basically works on two consecutive non-overlapping components; as a result, the straightforwa...
Autores principales: | , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society Publishing
2017
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5414260/ https://www.ncbi.nlm.nih.gov/pubmed/28484623 http://dx.doi.org/10.1098/rsos.161066 |
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author | Prasad, Shiv Pal, Arup Kumar |
author_facet | Prasad, Shiv Pal, Arup Kumar |
author_sort | Prasad, Shiv |
collection | PubMed |
description | This paper presents a steganographic scheme based on the RGB colour cover image. The secret message bits are embedded into each colour pixel sequentially by the pixel-value differencing (PVD) technique. PVD basically works on two consecutive non-overlapping components; as a result, the straightforward conventional PVD technique is not applicable to embed the secret message bits into a colour pixel, since a colour pixel consists of three colour components, i.e. red, green and blue. Hence, in the proposed scheme, initially the three colour components are represented into two overlapping blocks like the combination of red and green colour components, while another one is the combination of green and blue colour components, respectively. Later, the PVD technique is employed on each block independently to embed the secret data. The two overlapping blocks are readjusted to attain the modified three colour components. The notion of overlapping blocks has improved the embedding capacity of the cover image. The scheme has been tested on a set of colour images and satisfactory results have been achieved in terms of embedding capacity and upholding the acceptable visual quality of the stego-image. |
format | Online Article Text |
id | pubmed-5414260 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2017 |
publisher | The Royal Society Publishing |
record_format | MEDLINE/PubMed |
spelling | pubmed-54142602017-05-08 An RGB colour image steganography scheme using overlapping block-based pixel-value differencing Prasad, Shiv Pal, Arup Kumar R Soc Open Sci Computer Science This paper presents a steganographic scheme based on the RGB colour cover image. The secret message bits are embedded into each colour pixel sequentially by the pixel-value differencing (PVD) technique. PVD basically works on two consecutive non-overlapping components; as a result, the straightforward conventional PVD technique is not applicable to embed the secret message bits into a colour pixel, since a colour pixel consists of three colour components, i.e. red, green and blue. Hence, in the proposed scheme, initially the three colour components are represented into two overlapping blocks like the combination of red and green colour components, while another one is the combination of green and blue colour components, respectively. Later, the PVD technique is employed on each block independently to embed the secret data. The two overlapping blocks are readjusted to attain the modified three colour components. The notion of overlapping blocks has improved the embedding capacity of the cover image. The scheme has been tested on a set of colour images and satisfactory results have been achieved in terms of embedding capacity and upholding the acceptable visual quality of the stego-image. The Royal Society Publishing 2017-04-26 /pmc/articles/PMC5414260/ /pubmed/28484623 http://dx.doi.org/10.1098/rsos.161066 Text en © 2017 The Authors. http://creativecommons.org/licenses/by/4.0/ Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited. |
spellingShingle | Computer Science Prasad, Shiv Pal, Arup Kumar An RGB colour image steganography scheme using overlapping block-based pixel-value differencing |
title | An RGB colour image steganography scheme using overlapping block-based pixel-value differencing |
title_full | An RGB colour image steganography scheme using overlapping block-based pixel-value differencing |
title_fullStr | An RGB colour image steganography scheme using overlapping block-based pixel-value differencing |
title_full_unstemmed | An RGB colour image steganography scheme using overlapping block-based pixel-value differencing |
title_short | An RGB colour image steganography scheme using overlapping block-based pixel-value differencing |
title_sort | rgb colour image steganography scheme using overlapping block-based pixel-value differencing |
topic | Computer Science |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5414260/ https://www.ncbi.nlm.nih.gov/pubmed/28484623 http://dx.doi.org/10.1098/rsos.161066 |
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