Algorithm of Digital Watermark Based on Wavelet

Abstract:

Analyze a human visual model based wavelet domain digital watermark algorithm and improved it. First conduct multi-level wavelet decomposition on original image and modify medium frequency coefficient, and then adapt the algorithm to embed the watermark into the source image. The experiment shows that the watermark embedded image enjoys better imperceptibility and robustness to JPEG compression, add gaussian noise, contrast enhancement e.t. traditional image processing operations.

• Periodical: Advanced Materials Research (Volumes 756-759)
• Pages: 3298-3302
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.756-759.3298
• Online since: September 2013
• Authors: Si Yu Lai, Juan Wang
• Keywords: Algorithm (GA), Digital Watermarking, Discrete Wavelet Transform (DWT), Human Visual System

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