HVS-based Imperceptibility Measure of Watermark in Watermarked Color Image

Authors:
Hongmei Yang;Yongquan Liang;Lianshan Liu;Haibin Sun
Affiliations:
Shandong University of Science and Technology, China;Shandong University of Science and Technology, China;Shandong University of Science and Technology, China;Shandong University of Science and Technology, China
Venue:
SNPD '07 Proceedings of the Eighth ACIS International Conference on Software Engineering, Artificial Intelligence, Networking, and Parallel/Distributed Computing - Volume 03
Year:
2007

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A DCT based reversible data embedding scheme for MPEG-4 video using HVS characteristics

Proceedings of the Eighth Indian Conference on Computer Vision, Graphics and Image Processing

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Abstract

Imperceptibility of embedded watermark reflects the fidelity of watermarked image. Based on the color masking and Watson's JND(Just Noticeable Differences) model, a calculation method of JNCD(Just Noticeable Color Differences) is proposed. Then the masking weight for each element of color image is calculated using the JNCD and a new quality measure of watermarked color image is proposed, i.e. CPSNR (Color image Peak Signal to Noise Ratio). The quality of watermarked color image calculated by CPSNR is closer to the sensitivity of human vision than PSNR.