A Fast And Efficient Method To Protect Color Images

Marc Chaumont (1) , William Puech (1)

1 ICAR - Image & Interaction

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 a fast color quantization, an optimized ordering and an adapted data hiding. The principle is to build an index image which is, in the same time, a semantically intelligible grey-level image. In order to obtain this particular index image, which should be robust to data hiding, a layer running algorithm is proceeded to sort the K colors of the palette. The major contributions of this paper are the fast color quantization, the optimized layer running algorithm, the color palette compression and the adapted data hiding.

Mots clés: Data-Hiding; Color Image Secured; Color Palette; Compression

Domaines: Traitement du signal et de l'image [eess.SP]; Théorie de l'information [cs.IT]; Cryptographie et sécurité [cs.CR]; Traitement du signal et de l'image [eess.SP]

Marc Chaumont, William Puech. A Fast And Efficient Method To Protect Color Images. Electronic Imaging, Jan 2007, San Jose, CA, United States. pp.65081T, ⟨10.1117/12.702741⟩. ⟨lirmm-00130160⟩