Title :
A Digital Watermarking Algorithm Based on Region of Interest for 3D Image
Author :
Fan Sheng-li ; Yu Mei ; Jiang Gang-yi ; Shao Feng ; Peng Zong-ju
Author_Institution :
Fac. of Inf. Sci. & Eng., Ningbo Univ., Ningbo, China
Abstract :
A digital watermarking algorithm based on depth perceptual region of interest (DP-ROI) for copyright protection of three dimension (3D) images is proposed. First, DP-ROI is defined according to the three-dimensional depth sensation of human visual system and extracted through depth image and gray image. Then, gray image is transformed with discrete cosine transformation (DCT). Several middle frequency DCT coefficients in DP-ROI are adjusted with smaller strength to embed watermark. Finally, by computing the correlation of DCT middle frequency coefficients, and blind watermark is extracted. The experimental results show that the proposed watermarking algorithm has good robustness against image processing attacks, such as JPEG compression, Gaussian noise addition through selection of watermark embedding strength.
Keywords :
Gaussian noise; copy protection; copyright; discrete cosine transforms; image coding; image watermarking; 3D Image; DP-ROI; Gaussian noise addition; JPEG compression; blind watermarking; copyright protection; depth image; depth perceptual region-of-interest; digital watermarking algorithm; discrete cosine transformation; gray image; human visual system; image processing attack; middle frequency DCT coefficient; three dimension image; three-dimensional depth sensation; watermark embedding strength; Discrete cosine transforms; Error probability; Image edge detection; Image quality; PSNR; Robustness; Watermarking; depth perceptual region-of-interest; three-dimensional image; watermarking;
Conference_Titel :
Computational Intelligence and Security (CIS), 2012 Eighth International Conference on
Conference_Location :
Guangzhou
Print_ISBN :
978-1-4673-4725-9
DOI :
10.1109/CIS.2012.129
