Watermaking three-dimensional polygonal models
MULTIMEDIA '97 Proceedings of the fifth ACM international conference on Multimedia
Digital watermarking
Non-photorealistic computer graphics: modeling, rendering, and animation
Non-photorealistic computer graphics: modeling, rendering, and animation
WYSIWYG NPR: drawing strokes directly on 3D models
Proceedings of the 29th annual conference on Computer graphics and interactive techniques
Geometry-Based Watermarking of 3D Models
IEEE Computer Graphics and Applications
Watermarking 2D Vector Maps in the Mesh-Spectral Domain
SMI '03 Proceedings of the Shape Modeling International 2003
A Developer's Guide to Silhouette Algorithms for Polygonal Models
IEEE Computer Graphics and Applications
Using Musical Features for Watermarking Music Scores
WEDELMUSIC '01 Proceedings of the First International Conference on WEB Delivering of Music (WEDELMUSIC'01)
Watermarking polygonal lines using Fourier descriptors
ICASSP '00 Proceedings of the Acoustics, Speech, and Signal Processing, 2000. on IEEE International Conference - Volume 04
IEEE Transactions on Information Theory
A digital watermark for vector-based fonts
MM&Sec '06 Proceedings of the 8th workshop on Multimedia and security
Image annotation watermarking: nested object embedding using hypergraph model
MM&Sec '06 Proceedings of the 8th workshop on Multimedia and security
Nested object watermarking: from the rectangular con-straint to polygonal and private annotations
Proceedings of the 9th workshop on Multimedia & security
Reversible fragile watermarking for 2-D vector map authentication with localization
Computer-Aided Design
Watermarking road maps against crop and merge attacks
Proceedings of the first ACM workshop on Information hiding and multimedia security
Reversible fragile watermarking for locating tampered blocks in 2D vector maps
Multimedia Tools and Applications
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Digital watermarking is a technique for embedding information into data, such as images, 3D models, or audio files, such that some properties (i. e., security, imperceptibility, robustness) are maintained. While most of the existing watermarking techniques focus on encoding copyright information where security is one of the most important properties, we have developed algorithms for embedding Illustration Watermarks, i. e., content-related annotations for the image. Robustness against common media transformations, high capacity, and blind detection are our aspired properties while security and the usage of secure keys are less important. The medium that we are using for embedding data are 2D vector graphics. We introduce algorithms that change line attributes, introduce new vertices in certain patterns, and replace existing stroke segments by new lines in a stylistic way. Based on the modification they introduce, we categorize our techniques into whether they change the appearance of the image or not and whether the changes are perceivable by the naked eye or not. We demonstrate our techniques with silhouette lines obtained from 3D models. Such line drawings are a very common style utilized in many illustrations, in particular in the medical and technicaldomain.