A Reversible Watermarking Based on Histogram Shifting

  • JinHa Hwang
  • JongWeon Kim
  • JongUk Choi
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 4283)


In this paper, we propose a reversible watermarking algorithm where an original image can be recovered from watermarked image data. Most watermarking algorithms cause degradation of image quality in original digital content in the process of embedding watermark. In the proposed algorithm, the original image can be obtained when the degradation is removed from the watermarked image after extracting watermark information. In the proposed algorithm, we utilize a peak point of image histogram and the location map and modify pixel values slightly to embed data. Because the peak point of image histogram and location map are employed in this algorithm, there is no need of extra information transmitted to receiving side. Also, because a slight modification on pixel values is conducted, highly imperceptibly images can be achieved. As locations of watermark embedding are identified using location map, amount of watermark data can dramatically increases through recursive embedding. Experimental results show that it can embed 5K to 130K bits of additional data.


Original Image Minimum Point Maximum Point Watermark Image Information Hiding 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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Copyright information

© Springer-Verlag Berlin Heidelberg 2006

Authors and Affiliations

  • JinHa Hwang
    • 1
  • JongWeon Kim
    • 1
  • JongUk Choi
    • 1
    • 2
  1. 1.Copyright Protection Research InstituteSangmyung UniversitySeoulKorea
  2. 2.MarkAny Inc.SeoulKorea

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