Image Watermarking Resisting to Geometrical Attacks Based on Histogram
IIH-MSP '06 Proceedings of the 2006 International Conference on Intelligent Information Hiding and Multimedia
Fragile watermarking based on localized histogram modification
CCNC'09 Proceedings of the 6th IEEE Conference on Consumer Communications and Networking Conference
A feature-based robust digital image watermarking scheme
IEEE Transactions on Signal Processing
A fast efficient computation of cubic-spline interpolation in imagecodec
IEEE Transactions on Signal Processing
Robust watermarking of facial images based on salient geometricpattern matching
IEEE Transactions on Multimedia
Robust template matching for affine resistant image watermarks
IEEE Transactions on Image Processing
A DWT-DFT composite watermarking scheme robust to both affine transform and JPEG compression
IEEE Transactions on Circuits and Systems for Video Technology
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As one of the crucial problems in watermarking, robustness against geometric distortion and JPEG compression becomes more than challenging and problematic. In this paper, a robust watermarking scheme based on block histogram and gray-level histogram is proposed for gray images. For embedding, the scheme orders the pixel gray-levels and groups the pixels into blocks of dynamic size, each of which has the same number of gray-levels, thus generates the block histogram. According to the block histogram, the Number_KEY and Value_KEY generate. Then the gray-level histogram is modified to form a specially distributed, indicating the embedding bits. For extraction, the watermarked image, the Number_KEY, and the Value_KEY are adopted together to get the watermark bits. Experimental results show that the scheme is highly robust against not only JPEG compression, but also geometric attacks and common signal processing such as median filtering. The comparison results between the proposed scheme and the existing methods indicate its advantages.