Securing color information of an image by concealing the color palette

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• 作者：M. Chaumont^a ; ^b ; ^c ; ^{marc.chaumont@lirmm.fr} ; Author Vitae ; W. Puech^b ; ^c ; ^{william.puech@lirmm.fr}Author Vitae ; C. Lahanier^d ; ^{christian.lahanier@free.fr}Author Vitae
• 关键词：Data hiding ; Color protection ; Color palette scanning ; Palette reordering ; Digital painting ; Cultural heritage
• 刊名：Journal of Systems and Software
• 出版年：2013
• 出版时间：March, 2013
• 年：2013
• 卷：86
• 期：3
• 页码：809-825
• 全文大小：4034 K

文摘

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.