Block-based reversible data embedding

  title={Block-based reversible data embedding},
  author={Ju-Yuan Hsiao and Ke-Fan Chan and J. Morris Chang},
  journal={Signal Processing},
This paper proposes a block-based reversible data embedding method applied to grayscale cover images. The image is first divided into two areas: data embedding area and auxiliary information embedding area. The data embedding area is further partitioned into 3 * 3 blocks. According to two predefined thresholds, all the blocks are divided into three categories: smooth, normal or complex. The complex blocks do not embed any data. A smooth block will embed twice the data of a normal block. After… CONTINUE READING
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Lossless Recovery of an Original Image Containing Embedded Data

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