High Capacity Images Based Steganography

Steganography is one of various data hiding techniques, which aims at transmitting a message on a channel where some other kind of information is already being transmitted.The information embedding is necessary in JPEG2000 compressed images, to enlarge the hiding capacity because the available redundancy is very limited. The bitstream truncation makes it difficult to hide information. Using bit-plane encoding procedure twice to solve the problem due to bitstream truncation. Moreover, embedding points and their intensity are determined in a well defined quantitative manner via redundancy evaluation to increase hiding capacity. The proposed method can be easily integrated into the JPEG2000 image coder, and the produced stego-bitstream can be decoded normally.