Modifikasi Algoritma Controlling Expansion Dalam Meningkatan Kapasitas Penyisipan Data Hiding

IF 2.4 Q3 COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS International Journal of Information and Learning Technology Pub Date : 2023-04-04 DOI:10.32938/jitu.v2i2.4191
Kristoforus Fallo
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Abstract

Stegonography is the art of hiding messages in other media. Stegonography is widely used to send secret messages without being known by other people by using digital media in the form of image files so that besides the sender and recipient no one knows or is aware that there is a secret message in it. Several researchers have developed these methods such as Difference Expansion, Reduced Difference Expansion, Quad Difference Expansion and Controlling Expansion. These methods have been able to recover and improve data embedding but during the running process there are several problems that often occur, namely overflow and underflow of pixel values. To overcome the above problems, we modify the Controlling Expansion algorithm by minimizing the condition of the pixel difference value and reducing the final pixel difference value after inserting the data bit and using the Location Map on the new pixel value and during secret data extraction. The experimental results show that the proposed method can increase the data storage capacity and the PSNR of stego images is higher than the previous method.
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修正算法控制扩展以增强数据隐藏能力
隐写术是在其他媒体中隐藏信息的艺术。隐写术被广泛应用于在不被其他人知道的情况下,利用数字媒体以图像文件的形式发送秘密信息,使除了发送者和接收者之外没有人知道或意识到其中有秘密信息。一些学者提出了差分展开、简化差分展开、四元差分展开和控制展开等方法。这些方法能够恢复和改善数据嵌入,但在运行过程中经常出现像素值溢出和下溢的问题。为了克服上述问题,我们修改了控制扩展算法,在插入数据位并在新的像素值上使用Location Map和秘密数据提取后,最小化像素差值的条件,减小最终的像素差值。实验结果表明,该方法可以提高数据存储容量,并且隐写图像的PSNR高于之前的方法。
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来源期刊
International Journal of Information and Learning Technology
International Journal of Information and Learning Technology COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS-
CiteScore
6.10
自引率
3.30%
发文量
33
期刊介绍: International Journal of Information and Learning Technology (IJILT) provides a forum for the sharing of the latest theories, applications, and services related to planning, developing, managing, using, and evaluating information technologies in administrative, academic, and library computing, as well as other educational technologies. Submissions can include research: -Illustrating and critiquing educational technologies -New uses of technology in education -Issue-or results-focused case studies detailing examples of technology applications in higher education -In-depth analyses of the latest theories, applications and services in the field The journal provides wide-ranging and independent coverage of the management, use and integration of information resources and learning technologies.
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