dc.contributor.authorLiu, Minglei
dc.contributor.authorSeah, Hock Soon
dc.contributor.authorZhu, Ce
dc.contributor.authorLin, Weisi
dc.contributor.authorTian, Feng
dc.identifier.citationLiu, M., Seah, H. S., Zhu, C., Lin, W., & Tian, F. (2012). Reducing location map in prediction-based difference expansion for reversible image data embedding. Signal Processing, 92(3), 819-828.en_US
dc.description.abstractIn this paper, we present a reversible data embedding scheme based on an adaptive edge-directed prediction for images. It is known that the difference expansion is an efficient data embedding method. Since the expansion on a large difference will cause a significant embedding distortion, a location map is usually employed to select small differences for expansion and to avoid overflow/underflow problems caused by expansion. However, location map bits lower payload capacity for data embedding. To reduce the location map, our proposed scheme aims to predict small prediction errors for expansion by using an edge detector. Moreover, to generate a small prediction error for each pixel, an adaptive edge-directed prediction is employed which adapts reasonably well between smooth regions and edge areas. Experimental results show that our proposed data embedding scheme for natural images can achieve a high embedding capacity while keeping the embedding distortion low.en_US
dc.relation.ispartofseriesSignal processingen_US
dc.rights© 2011 Elsevier B.V.en_US
dc.subjectDRNTU::Engineering::Computer science and engineering
dc.titleReducing location map in prediction-based difference expansion for reversible image data embeddingen_US
dc.typeJournal Article
dc.contributor.schoolSchool of Computer Engineeringen_US
dc.contributor.schoolSchool of Electrical and Electronic Engineeringen_US

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