Information Hiding Methods Based on Binary Images

• Main Authors: Feng-Rong Wu, 吳豐榮
• Other Authors: Hsien-Wen Tseng
• Format: Others
• Language: zh-TW
• Published: 2011
• Online Access: http://ndltd.ncl.edu.tw/handle/80778064857611913895

碩士 === 朝陽科技大學 === 資訊管理系碩士班 === 99 === The prosperous development of digital information has been considered a predominant role with its enormous data producing all the time. Through the public broadcasting online, it has become easy to obtain and reproduce information nowadays. To ensure the authorization of copying, editing, or re-broadcasting regarding online public information, the technology of information hiding has been developed. Different from grayscale image and color image shown on the computer’s screen, binary image has been widely applied on presenting not only texts but also pictures on paper. Therefore, the objective of this paper is to propose information hiding methods concerning binary images. The information hiding methods stated in this study can be applied both on common general binary image as well as on halftone binary image. In our first method, with calculated odd and even numbers in certain areas and the best calculation method for locations, we can change the locations later to control necessary odd and even numbers for information storage. Our second method is to increase the inserted payload by increasing the inserted information from one bit to two bits. Through calculating block-value and applying the best location calculation addressed in the first method, information can be inserted into the system. This paper aims at calculating the best location in the areas and increasing the payload to present a better quality of binary images.