A 8-Bit-Grey-Level Image Embedding ITS 512 Color Palette

Marc Chaumont 1 William Puech 1
1 ICAR - Image & Interaction
LIRMM - Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier
Abstract : In this paper, we propose a method to embed the high resolution color information of an image in its corresponding grey-level image. The objective of this work is to allow free access to the grey-level image and give high resolution color image access to secret key owners. This method is made of two steps which are the color image decomposition (in a grey-level image and its associated color information) and the color-information hiding. The main contribution of this paper is to consider the decomposition into 512 colors and to apply a reversible embedding of a bitplane plus a color palette. The resultant watermarked grey-level image is then a 8-bit coded image. With this watermarked image and the extraction secret key, a user is able to rebuild a color image composed of 512 colors. Considering the previous work, the two important consequences of this approach are the improvement of the security and a better color image quality.
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Communication dans un congrès
EURASIP. EUSIPCO: EUropean SIgnal Processing COnference, 2008, Lausanne, Switzerland. 16th European Signal Processing Conference, 2008, 〈www.eurasip.org/Proceedings/Eusipco/Eusipco2008/〉
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Soumis le : vendredi 19 décembre 2008 - 16:20:46
Dernière modification le : jeudi 24 mai 2018 - 15:59:23
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Marc Chaumont, William Puech. A 8-Bit-Grey-Level Image Embedding ITS 512 Color Palette. EURASIP. EUSIPCO: EUropean SIgnal Processing COnference, 2008, Lausanne, Switzerland. 16th European Signal Processing Conference, 2008, 〈www.eurasip.org/Proceedings/Eusipco/Eusipco2008/〉. 〈lirmm-00348615〉

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