Partial image watermarking based on variance of neighbor pixels

Siravich Sritapanu; Thumrongrat Amornraksa

doi:10.1117/12.913417

30 September 2011 Partial image watermarking based on variance of neighbor pixels

Siravich Sritapanu, Thumrongrat Amornraksa

Proceedings Volume 8285, International Conference on Graphic and Image Processing (ICGIP 2011); 82851G (2011) https://doi.org/10.1117/12.913417
Event: 2011 International Conference on Graphic and Image Processing, 2011, Cairo, Egypt

Abstract

A method used for improving the performance of the digital watermarking based on the modification of image pixels is proposed in this paper. In the embedding process, the watermark bits are partially embedded into the blue component of the image pixels. The criteria used to determine whether a watermark bit embedding is performed or not is derived from the variance of neighbor pixels of the embedding pixel. The same criteria are used in the watermark extraction process to identity positions of the watermarked pixels. The experimental result show the improved performance in term of NC, compared to the previous methods. The improved robustness of the proposed method against various common imaging processing based attacks e.g. additive Gaussian noise, JPEG compression standard and image cropping at various strengths is also presented and compared.

Citation Download Citation

Siravich Sritapanu and Thumrongrat Amornraksa "Partial image watermarking based on variance of neighbor pixels", Proc. SPIE 8285, International Conference on Graphic and Image Processing (ICGIP 2011), 82851G (30 September 2011); https://doi.org/10.1117/12.913417

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KEYWORDS

Digital watermarking

Image processing

Image compression

Signal processing

Discrete wavelet transforms

Digital imaging

Image quality

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