Title :
QIM-DM watermarking optimization based on inter-frequency contrast masking in the DCT domain
Author :
Battisti, Federica ; Carli, Marco ; Neri, Alessandro
Author_Institution :
Appl. Electron. Dept., Univ. of Roma TRE, Rome, Italy
Abstract :
In this paper a watermarking scheme based on the human visual system (HVS) is presented. A quantization index modulation - dither modulation scheme is used in the discrete cosine transform domain for the embedding. The watermark quantization step is selected according to the inter-frequency masking effect computed by using a HVS-inspired objective image quality metric. Experimental results demonstrate the effectiveness and the robustness of the proposed solution.
Keywords :
discrete cosine transforms; image coding; optimisation; quantisation (signal); watermarking; DCT domain; HVS-inspired objective image quality metric; QIM-DM watermarking optimization; discrete cosine transform; dither modulation scheme; human visual system; inter-frequency contrast masking; quantization index modulation; watermark quantization step; Digital modulation; Discrete cosine transforms; Humans; Image quality; Protection; Quantization; Robustness; Sequences; Visual system; Watermarking; Digital watermarking; PSNR-HVS; Quantization Index Modulation; perceptual quality metrics;
Conference_Titel :
Information Forensics and Security, 2009. WIFS 2009. First IEEE International Workshop on
Conference_Location :
London
Print_ISBN :
978-1-4244-5279-8
Electronic_ISBN :
978-1-4244-5280-4
DOI :
10.1109/WIFS.2009.5386491
