期刊名称：International Journal of Computer Science and Information Technologies
电子版ISSN：0975-9646
出版年度：2014
卷号：5
期号：3
页码：3759-3763
出版社：TechScience Publications
摘要：This paper presents a novel lossless data hiding approach for hiding the text in color image. We use integer wavelet transform (IWT), LZW compression and Modified pixel indicator technique, to achieve high hiding capacity and good visual quality. Firstly Secret message is compressed using LZW compression algorithm and then compressed message is embed into the least significant bit (LSB) of high frequency integer wavelet coefficients using modified pixel indicator technique, if MSB of high frequency coefficients is 1 then embed 3 bit otherwise embed 1 bit and finally apply optimal pixel adjustment procedure (OPAP) after embedding the Secret message. We use the LZW compression for reducing the size of secret message .We utilize the frequency domain to improve the robustness of steganography and finally we implement OPAP to reduce the difference error between the cover and the stego-image.The proposed system shows the high hiding capacity with low distortions
