The blind detection for palette image watermarking without changing the color

TL;DR

This paper presents a blind detection scheme for palette image watermarking that embeds binary data using palette color permutations and allows data extraction without cover image modification.

Contribution

It introduces a novel steganographic method leveraging Lehmer code and palette transformations for blind detection in palette images.

Findings

Effective blind detection without cover image modification

Utilizes palette color permutations for data embedding

Achieves reliable data extraction through palette-RGB transformation

Abstract

To hide a binary pattern in the palette image a steganographic scheme with blind detection is considered. The embedding algorithm uses the Lehmer code by palette color permutations for which the cover image palette is generally required. The found transformation between the palette and RGB images allows to extract the hidden data without any cover work.