Content based watermarking of images
MULTIMEDIA '98 Proceedings of the sixth ACM international conference on Multimedia
Robust MPEG video watermarking technologies
MULTIMEDIA '98 Proceedings of the sixth ACM international conference on Multimedia
Proceedings of the 26th annual conference on Computer graphics and interactive techniques
Geometry-Based Watermarking of 3D Models
IEEE Computer Graphics and Applications
A Shape-Preserving Data Embedding Algorithm for NURBS Curves and Surfaces
CGI '99 Proceedings of the International Conference on Computer Graphics
Digital Watermarking of MPEG-2 Coded Video in the Bitstream Domain
ICASSP '97 Proceedings of the 1997 IEEE International Conference on Acoustics, Speech, and Signal Processing (ICASSP '97) -Volume 4 - Volume 4
Discrete Cosine Transform: Algorithms, Advantages, Applications
Discrete Cosine Transform: Algorithms, Advantages, Applications
Digital watermarking of still images with gray-level digital watermarks
IEEE Transactions on Consumer Electronics
Watermarking three-dimensional polygonal models through geometric and topological modifications
IEEE Journal on Selected Areas in Communications
Secure spread spectrum watermarking for multimedia
IEEE Transactions on Image Processing
Three-dimensional subband coding of video
IEEE Transactions on Image Processing
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With the rapid development of computer multimedia, how to protect digital products from being copied, pirated and juggled has been an urgent issue in the information security field. Digital watermarking is a new method to solve the referred problems. This paper proposes a gray-level digital watermarking algorithm for volume data based on three-dimension discrete wavelet transform (3D-DWT), three-dimension discrete cosine transform (3D-DCT) and spread-spectrum communication techniques. The embedded watermark is not only invisible but also resistant to the common attacks such as cropping, adding noise, and filtering. The validity of proposed algorithm has been confirmed with experiments