Securing Color Information of an Image by Concealing the Color Palette

Marc Chaumont 1 William Puech 1 Christian Lahanier 2
1 ICAR - Image & Interaction
LIRMM - Laboratoire d'Informatique de Robotique et de Microélectronique de Montpellier
Abstract : This paper deals with a method to protect the color information of images by providing free access to the corresponding gray level images. Only with a secret key and the gray level images, it is then possible to view the images in color. The approach is based on a color reordering algorithm after a quantization step. Based on a layer scanning algorithm, the color reordering generates gray level images and makes it possible to embed the color palette into the gray level images using a data hiding algorithm. This work was carried out in the framework of a project aimed at providing limited access to the private digital painting database of the Louvre Museum in Paris, France.
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Marc Chaumont, William Puech, Christian Lahanier. Securing Color Information of an Image by Concealing the Color Palette. Journal of Systems and Software, Elsevier, 2013, 86 (3), pp.809-825. ⟨10.1016/j.jss.2012.11.042⟩. ⟨lirmm-00807065⟩

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