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# A Color Image Hidden in a Grey-Level Image

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 color information of an image in a corresponding grey-level image. The objective of this work is to allow free access to the grey-level image and give color image access only if you own a secret key. This method is made of three major steps which are the color quantization, the ordering and the data hiding. The originality of this paper is to build an {\em indexed image} which is, in the same time, a semantically intelligible grey-level image. In order to obtain this particular {\em indexed image}, which should be robust to data hiding, we propose an original $K$ color ordering algorithm called the {\em layer running algorithm}.
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Conference papers
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Cited literature [8 references]

https://hal-lirmm.ccsd.cnrs.fr/lirmm-00123583
Contributor : William Puech <>
Submitted on : Wednesday, January 10, 2007 - 2:20:08 PM
Last modification on : Thursday, May 24, 2018 - 3:59:23 PM
Long-term archiving on: : Wednesday, April 7, 2010 - 2:01:48 AM

### Identifiers

• HAL Id : lirmm-00123583, version 1

### Citation

Marc Chaumont, William Puech. A Color Image Hidden in a Grey-Level Image. CGIV: Colour in Graphics, Imaging and Vision, Jun 2006, Leeds, United Kingdom. pp.226-231. ⟨lirmm-00123583⟩

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