IMPROVED JPEG STEGANOGRAHPY ALOGORITHM TO PREVENT STEGANALYSIS

摘要

An improved JPEG skeganography algorithm for preventing staganalysis is disclosed. The steganography method according to an embodiment includes the steps of not modifying the DCT coefficient in the process of reducing the absolute value of the DCT coefficient, and manipulating only a specific DCT coefficient in the DCT coefficient in the process of increasing the absolute value of the DCT coefficient including the steps of