期刊名称：International Journal of Innovative Research in Computer and Communication Engineering
印刷版ISSN：2320-9798
电子版ISSN：2320-9801
出版年度：2014
卷号：2
期号：4
出版社：S&S Publications
摘要：In the recent years, lot of researches is taking place in the field of watermarking to establish moreefficient reversible techniques. It is because always there is a need to protect the images of sensitive content such as themilitary or medical data. The existing system such as the Difference Expansion and Expansion Embedding are mostcommonly used techniques but suffers from undesirable distortion which makes these methods unsuitable or lessreliable. A combination of two techniques pixel histogram shifting and dynamic predictive error histogram shifting areintroduced as an attempt to improve the quality of the watermarked image.. The image is first classified invariantly tofind which area of the image can be watermarked. On classifying the watermark bits are applied by direct histogramshifting or by shifting it dynamically. Two secret images are embedded into the same cover image considering the oddand even columns of the pixel matrix. This method inserts the payload in the textured area and thus reduces thedistortion and it also increases the embedding capacity of the cover image.
