Data Hiding in Halftone Images Using Hamming Code and Hilbert Curve

• Main Authors: HUANG,CHING-CHIEH, 黃勁傑
• Other Authors: LIEN,BRIAN KUO-JEN
• Format: Others
• Language: zh-TW
• Published: 2016
• Online Access: http://ndltd.ncl.edu.tw/handle/99986495057167154448

碩士 === 輔仁大學 === 資訊工程學系碩士班 === 104 === Halftone images are widely used in the printing industries. Hiding data directly into halftone images can be used to assure the integrity of the media or to embed secret message and auxiliary data. In this paper, we present a simple but novel improved high capacity data hiding method. The proposed method decreases the chance of forced single-pixel toggling by a pixel-pair swapping which is selected out of a sequence of candidate pairs along Hilbert curve for a group of to-be-embedded bits using the Hamming code. The proposed method can significantly improve the visual quality of marked halftone images especially for high-capacity data hiding. Experimental results show that the proposed scheme outperforms the previous scheme.