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Digital Image Watermarking Method Based on Vector Quantization with Labeled Codewords
Zhe-Ming LU Wen XING Dian-Guo XU Sheng-He SUN
IEICE TRANSACTIONS on Information and Systems
Publication Date: 2003/12/01
Print ISSN: 0916-8532
Type of Manuscript: LETTER
Category: Applications of Information Security Techniques
digital watermarking, vector quantization, image processing,
Full Text: PDF(287.6KB)>>
This Letter presents a novel VQ-based digital image watermarking method. By modifying the conventional GLA algorithm, a codeword-labeled codebook is first generated. Each input image block is then reconstructed by the nearest codeword whose label is equal to the watermark bit. The watermark extraction can be performed blindly. Simulation results show that the proposed method is robust to JPEG compression, vector quantization (VQ) compression and some spatial-domain processing operations.