Title :
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
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;
Conference_Titel :
Information and Communication Technologies (WICT), 2011 World Congress on
Conference_Location :
Mumbai
Print_ISBN :
978-1-4673-0127-5
DOI :
10.1109/WICT.2011.6141365
