Error control coding: an introduction
Error control coding: an introduction
Digital watermarking
Digital Image Processing (3rd Edition)
Digital Image Processing (3rd Edition)
A wavelet-based watermarking algorithm for ownership verification of digital images
IEEE Transactions on Image Processing
Modified patchwork-based watermarking scheme for satellite imagery
Signal Processing
Robust image watermarking against local geometric attacks using multiscale block matching method
Journal of Visual Communication and Image Representation
Performance Comparison of Digital Watermarking for Scanned Document in RGB and YCbCr Channels
PCM '09 Proceedings of the 10th Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
Improved Digital Watermarking Using DWT Masking
PCM '09 Proceedings of the 10th Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
Pixel-Wise Based Digital Watermarking in YCbCr Color Space
PCM '09 Proceedings of the 10th Pacific Rim Conference on Multimedia: Advances in Multimedia Information Processing
Pixel-wise based digital watermarking using Weiner filter in chrominance channel
ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
Improved performance of image watermarking by reducing luminance bias
ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
Improved image watermarking using pixel averaging and unbiased retrieval
ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
Enhanced image watermarking using adaptive pixel prediction
ISCIT'09 Proceedings of the 9th international conference on Communications and information technologies
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This paper presents an image watermarking method with blind detection based on amplitude modulation. Basically, the watermark embedding is performed by modifying the pixel values in the blue channel of an image, while the watermark retrieval is achieved by using a prediction technique based on a linear combination of nearby pixel values around the embedded pixels. Based on the analysis results, three different methods are proposed to enhance the watermark retrieval performance, i.e. by balancing watermark bits around the embedding pixels, by properly tuning the strength of embedding watermark, by modifying the method of pixel prediction. Experimental results show that the watermarking scheme implementing our methods achieves significant improvements over the existing schemes. Remarkable improvements are still obtained even if various types of attacks are applied.