DCT block location based data hiding

Author

Meena, Omprakash ; Basavaraju, Sathisha ; Sur, Arijit

Author_Institution

Dept. of Comput. Sci. & Eng., Indian Inst. of Technol., Guwahati, India

fYear

2011

fDate

11-14 Dec. 2011

Firstpage

886

Lastpage

891

Abstract

In recent literature, it has been found that, the visual quality of the watermarked image is evaluated with respect to the human visual system. In this paper, the effect of perturbation in the different position in the quantized 8×8 DCT coefficient block is analyzed in order to find suitable image independent block positions for embedding data with respect to the total perceptual error between cover and watermarked image. The JPEG domain data hiding using quantization index modulation (QIM) [7] is used for embedding. A set of experiments have been carried out to justify the applicability of the proposed analysis.

Keywords

data compression; data encapsulation; discrete cosine transforms; image coding; image watermarking; DCT block location; DCT coefficient block quantization; JPEG domain data hiding; cover image; data embedding; human visual system; image independent block position; perceptual error; quantization index modulation; visual quality; watermarked image; Discrete cosine transforms; Humans; PSNR; Quantization; Transform coding; Visualization; Watermarking;

fLanguage

English

Publisher

ieee

Conference_Titel

Information and Communication Technologies (WICT), 2011 World Congress on

Conference_Location

Mumbai

Print_ISBN

978-1-4673-0127-5

Type

conf

DOI

10.1109/WICT.2011.6141365

Filename

6141365