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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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Contributor : William Puech <>
Submitted on : Friday, December 19, 2008 - 4:20:46 PM
Last modification on : Thursday, May 24, 2018 - 3:59:23 PM
Long-term archiving on: : Tuesday, June 8, 2010 - 5:58:45 PM


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  • HAL Id : lirmm-00348615, version 1



Marc Chaumont, William Puech. A 8-Bit-Grey-Level Image Embedding ITS 512 Color Palette. EUSIPCO: EUropean SIgnal Processing COnference, 2008, Lausanne, Switzerland. ⟨lirmm-00348615⟩



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