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Research papers

Dual image based reversible data hiding method using neighbouring pixel value differencing

Pages 398-407 | Received 09 Feb 2015, Accepted 21 May 2015, Published online: 12 Jun 2015
 

Abstract

Dual image based reversible data hidings are recently proposed where dual copies of a cover image are used to embed the secret data. In this paper, a novel reversible data hiding method based on neighbouring pixel value differencing is proposed to increase embedding capacity with a good image quality. The mean value of neighbouring pixels and the difference values are used to decide the size of embedding bits per the sub-block. The receiver can extract the secret data and recover the cover image from dual stegoimages. The experimental results show that the proposed method has a higher capacity and still a good image quality where it could embed 767,922 bits and maintain 45.58 and 45.33 dB for dual images.

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