Three-Directional Data Hiding Method for Digital Images
2014; Taylor & Francis; Volume: 38; Issue: 2 Linguagem: Inglês
10.1080/01611194.2014.885817
ISSN1558-1586
Autores Tópico(s)Digital Media Forensic Detection
ResumoAbstract A data hiding method using three-directional pixel-value differencing for gray images is presented in this article. The cover image is divided into non-overlapping 2 × 2 sub-blocks, and the basis pixel is selected to calculate three different values of a sub-block. Difference values are replaced by embedding the number of secret bits that are referenced by the range table. For three pixel pairs in the sub-block, the optimal pixel adjustment is preceded to reduce the distortion of visual quality. The experimental results demonstrate that the proposed method provides a high capacity and good visual quality. Keywords: data hidingFPDPVDsteganographywatermarking Additional informationNotes on contributorsKi-Hyun Jung Ki-Hyun Jung received his BS degree and MS degree in Computer Engineering from Kyungpook National University, South Korea. He had been employed as a senior researcher at the Agency of Defense Development, South Korea. He received his PhD degree in Computer Science from Kyungpook National University, South Korea. Currently, he is a professor at the School of Computer Information, Yeungjin College, South Korea. His current research interests are information hiding, watermarking, cryptography, network security, game and mobile programming, and virtual reality. Kee-Young Yoo Kee-Young Yoo received his BSc degree in Education of Mathematics from Kyungpook National University in 1976 and his MSc degree in Computer Engineering from Korea Advanced Institute of Science and Technology South Korea in 1978. He received his PhD degree in Computer Science from Rensselaer Polytechnic Institute New York in 1992. Currently, he is a professor at the School of Computer Science and Engineering, Kyungpook National University, South Korea. His current research interests are cryptography, authentication technologies, smart card security, network security, DRM security, and steganography. He has published in over 100 technical and scientific international journals on a variety of information security topics.
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