A novel technique for image steganography based on a high payload method and edge detection

Authors:
Anastasia Ioannidou;Spyros T. Halkidis;George Stephanides
Affiliations:
Department of Applied Informatics, University of Macedonia, Egnatia 156, GR-54006, Greece;Computational Systems and Software Engineering Laboratory, Department of Applied Informatics, University of Macedonia, Egnatia 156, GR-54006, Greece;Computational Systems and Software Engineering Laboratory, Department of Applied Informatics, University of Macedonia, Egnatia 156, GR-54006, Greece
Venue:
Expert Systems with Applications: An International Journal
Year:
2012

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Abstract

Image steganography has received a lot of attention during the last decade due to the lowering of the cost of storage media, which has allowed for wide use of a large number of images. We present a novel technique for image steganography which belongs to techniques taking advantage of sharp areas in images in order to hide a large amount of data. Specifically, the technique is based on the edges present in an image. A hybrid edge detector is used for this purpose. Moreover, a high payload technique for color images is exploited. These two techniques are combined in order to produce a new steganographic algorithm. Experimental results show that the new method achieves a higher peak signal to noise ratio for the same number of bits per pixel of embedded image.