On Hiding Secret Information in Medium Frequency DCT Components Using Least Significant Bits Steganography

作     者：Sahib Khan M A Irfan Arslan Arif Syed Tahir Hussain Rizvi Asma Gul Muhammad Naeem Nasir Ahmad 

作者机构：Department of Electronics and TelecommunicationsPolitecnico di Torino10129 TorinoItaly Department of Computer EngineeringUniversity of LahorePakistan Department of StatisticsShaheed Benazir Bhutto Women University PeshawarPakistan Department of Computer ScienceUniversity of PeshawarPakistan Department of Electronic and Electrical EngineeringLoughborough UniversityUnited Kingdom 

出 版 物：《Computer Modeling in Engineering & Sciences》 (工程与科学中的计算机建模（英文）)

年 卷 期：2019年第118卷第3期

页      面：529-546页

核心收录：

学科分类：08[工学] 0812[工学-计算机科学与技术（可授工学、理学学位）] 

主　　题：DCT steganography image processing information security data hiding steganalyisis 

摘      要：This work presents a new method of data hiding in digital images,in discrete cosine transform *** proposed method uses the least significant bits of the medium frequency components of the cover image for hiding the secret information,while the low and high frequency coefficients are kept *** unaltered low frequency DCT coefficients preserves the quality of the smooth region of the cover image,while no changes in the high DCT coefficient preserve the quality of the *** the medium frequency components have less contribution towards energy and image details,so the modification of these coefficients for data hiding results in high quality stego *** distortion due to the changes in the medium frequency coefficients is insignificant to be detected by the human visual *** proposed methods demonstrated a hiding capacity of 43:11%with the stego image quality of a peak signal to the noise ration of 36:3 dB,which is significantly higher than the threshold of 30 dB for a stego image *** proposed technique is immune to steganalysis and has proved to be highly secured against both spatial and DCT domain steganalysis techniques.