Reversible Watermarking Based on Invariant Relation of Three Pixels

Shaowei Weng, Shu-Chuan Chu, Jeng-Shyang Pan, Lakhmi Jain

    Research output: Contribution to conferencePaper

    Abstract

    In Lin's method [1], images are divided into non-overlapping three-pixel blocks. Each pixel block contains two pairs composed of two neighboring pixels. Absolute differences between pairs are calculated. And meanwhile, the absolute difference having the highest occurrence rate is obtained. 1-bit watermark is embedded into a pixel pair whose absolute difference is equal to this obtained value. Since each pixel block contains two differences, Lin's method achieves embedding rate of at most bpp (bit per pixel) for a single embedding process. With the aim of further increasing embedding rate, we modify the embedding process in Lin's method to keep the third pixel of a pixel block unaltered in the proposed method. Then, this unchanged pixel is used again to reform into a new pixel block with its two neighboring pixels. As a result, the embedding rate can reach to 1 bpp for a single embedding process. ...

    Original languageEnglish
    Pages71-80
    Number of pages10
    DOIs
    Publication statusPublished - 2010
    EventThe 2nd International Conference on Computational Collective Intelligence-Technologies and Applications -
    Duration: 10 Nov 2010 → …

    Conference

    ConferenceThe 2nd International Conference on Computational Collective Intelligence-Technologies and Applications
    Period10/11/10 → …

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    Weng, S., Chu, S-C., Pan, J-S., & Jain, L. (2010). Reversible Watermarking Based on Invariant Relation of Three Pixels. 71-80. Paper presented at The 2nd International Conference on Computational Collective Intelligence-Technologies and Applications, . https://doi.org/10.1007/978-3-642-16696-9_9