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      Reducing location map in prediction-based difference expansion for reversible image data embedding

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      Author
      Liu, Minglei
      Seah, Hock Soon
      Zhu, Ce
      Lin, Weisi
      Tian, Feng
      Date of Issue
      2011
      School
      School of Computer Engineering
      School of Electrical and Electronic Engineering
      Abstract
      In 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.
      Subject
      DRNTU::Engineering::Computer science and engineering
      Type
      Journal Article
      Series/Journal Title
      Signal processing
      Rights
      © 2011 Elsevier B.V.
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      • SCSE Journal Articles
      http://dx.doi.org/10.1016/j.sigpro.2011.09.028
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