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New Watermark Technique Based on B+ Tree and Mathematical Morphology | ||
| Al-Mustansiriyah Journal of Science | ||
| Article 1, Volume 26, Issue 1, 2015, Pages 92-104 | ||
| Author | ||
| Hala Bahjet Abdul Wahab | ||
| Abstract | ||
| In this paper, a new gray level image watermarking approach based on B+ tree, parametric Lagrange polynomial and morphology operations is proposed. First, the new approach utilizes the B+ tree to obtain the characteristic compression and efficient store with speed retrieval by building efficient indexing B+ tree as database for many watermark image positions. Second, the new approach encrypts it by a symmetric encryption algorithm based on robust interpolation polynomial depend on time parameter (t) in its processing called parametric Lagrange polynomial (PLP). Third, it is exploiting the abilities of morphology operation to detect the border of host image objects to use in embedding stage based on different value pixels (DVP) method in order to increase the transparency features to embedding stage. Experimental results show using B+ tree successful to give the facility to use more than watermark if needed with more flexibility. B+ tree produces high level indexing rate with efficient retrieval and solved the ambiguity problem that some embedding methods suffer. And using the B+ tree with PLP solve time execution problem that appear with PLP when perform only. The proposed approach is invisible and robust against commonly used gray level image processing methods. | ||
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