Double Embedding In The Quantization Index Modulation Framework

In this paper, we perform double embedding in the quantization index modulation (QIM) framework where a single coefficient is modified twice, using two quantizers, to embed two bits. The motivation behind substituting single embedding with double embedding in the QIM framework for a certain steganographic scheme is to increase its hiding rate without significantly increasing the embedding distortion introduced and the stego scheme's detectability against steganalysis. We empirically determine the best way to couple the double embedding framework with our error correction framework that uses repeat accumulate (RA) coding. For moderate noise levels, the use of double embedding is seen to be significantly advantageous over single embedding.

• Type: Conference
• Year: 2009
• Where: ICIP
• Keywords: Double Embedding Framework, Error Correction Framework, ICIP 2009, Image Processing, Single Embedding