A unified min-max transition-based data hiding algorithm for mixed text/halftone images

Shih Tung Wu*, Kuo Liang Chung, Yong Huai Huang, Jung G. Wu

*此作品的通信作者

研究成果: 雜誌貢獻期刊論文同行評審

摘要

Recently, several algorithms have been developed to hide data in either text images or halftone images. According to an observation that the number of transitions between black pixel and white pixel in the halftone image is much larger than that in the text image, this paper presents a unified min-max transition (MMT) scheme to embed data into the above two types of images without visual degradation. For text (halftone) images, data hiding can be performed by modifying the values of pixels to minimize (maximize) the number of the transitions. Based on our proposed MMT scheme, a unified block- and MMT-based data hiding (BMMTDH) algorithm is developed for text images, halftone images, and mixed text/halftone (MTH) images. Experimental results demonstrate that for MTH images, our proposed BMMTDH algorithm outperforms the previous relevant algorithms.

原文英語
頁(從 - 到)1159-1173
頁數15
期刊Journal of Information Science and Engineering
24
發行號4
出版狀態已發佈 - 2008 七月

ASJC Scopus subject areas

  • 資訊系統

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