A Novel Halftone Watermarking Scheme Using Hilbert Curve

• Main Authors: CHEN CHIEN HAO, 陳建豪
• Other Authors: 連國珍
• Format: Others
• Language: zh-TW
• Published: 2010
• Online Access: http://ndltd.ncl.edu.tw/handle/48009514915502000825

碩士 === 輔仁大學 === 資訊工程學系 === 98 === In this thesis, we propose a novel embedding watermark technology and scheme which doesn’t require the original image in encoding and decoding process. The main purpose of this pepper is to embed high capacity watermark in halftone image with high visual quality, and to protect an image with a fragile watermark against malicious attacks. Our method use Hilbert Curve to divide the image into sub-images and exchange neighboring pixels of the sub-image to avoid too much pseudo pixels for embedding the watermark .Experimental results show that our proposal method performs much better than DHSPT (Data Hiding by Smart Pair Toggling).