{"title":"Modifikasi Algoritma Controlling Expansion Dalam Meningkatan Kapasitas Penyisipan Data Hiding","authors":"Kristoforus Fallo","doi":"10.32938/jitu.v2i2.4191","DOIUrl":null,"url":null,"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.","PeriodicalId":51872,"journal":{"name":"International Journal of Information and Learning Technology","volume":null,"pages":null},"PeriodicalIF":2.4000,"publicationDate":"2023-04-04","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"International Journal of Information and Learning Technology","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.32938/jitu.v2i2.4191","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"COMPUTER SCIENCE, INTERDISCIPLINARY APPLICATIONS","Score":null,"Total":0}
引用次数: 0
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.
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.