Image steganography based on color palette transformation in color space

EURASIP Journal on Image and Video Processing

Simona Ramanauskaitė¹  Eugenijus Margalikas² 

[1] Vilnius Gediminas Technical University;Šiauliai University;

关键词: Color space;    Stegoimage;    Steganography;    RGB;   

DOI  :  10.1186/s13640-019-0484-x

来源: DOAJ

【 摘 要 】

Abstract In this paper, we present a novel image steganography method which is based on color palette transformation in color space. Most of the existing image steganography methods modify separate image pixels, and random noise appears in the image. By proposing a method, which changes the color palette of the image (all pixels of the same color will be changed to the same color), we achieve a higher user perception. Presented comparison of stegoimage quality metrics with other image steganography methods proved the new method is one of the best according to Structural Similarity Index (SSIM) and Peak Signal Noise Ratio (PSNR) values. The capability is average among other methods, but our method has a bigger capacity among methods with better SSIM and PSNR values. The color and pixel capability can be increased by using standard or adaptive color palette images with smoothing, but it will increase the embedding identification possibility.

【 授权许可】

Unknown