Summary
|
For Full-Text PDF, please login, if you are a member of IEICE, or go to Pay Per View on menu list, if you are a nonmember of IEICE. |
|
Perceptually Transparent Polyline Watermarking Based on Normal Multi-Resolution Representation Yu-Chi PU Wei-Chang DU I-Chang JOU Publication IEICE TRANSACTIONS on Information and Systems Vol.E89-D No.12 pp.2939-2949 Publication Date: 2006/12/01 Online ISSN: 1745-1361 DOI: 10.1093/ietisy/e89-d.12.2939 Print ISSN: 0916-8532 Type of Manuscript: PAPER Category: Application Information Security Keyword: watermarking, multi-resolution, normal polyline, self-intersecting, Full Text: PDF(816.4KB)>>
Summary: Digital watermarking techniques were developed for regular raster data such as images or video, but little research addressed irregular vector data, such as the shapes of cartoons or elevation contours. Vector graphic images, such as those in SVG format, are popular on the WWW, and provide the advantage of permitting affine transformations without aliasing. The creation of cartoon images or the acquisition of GIS geometry data involves much work, so the copyright and ownership of vector data must be protected. Common components in vector graphic images are polygonal lines or polylines. This work develops a normal multi-resolution representation of a polygonal line, and embeds a copyright notice or serial number in this representation. Previous studies on polyline watermarking have the non-transparent problems, including self-intersection of line segments. The experimental results demonstrate that the proposed watermarking approach is perceptually transparent, and solves the self-intersection problem. It is also resistant to similarity transformation, traversal reordering, point insertion/deletion and random noise attacks. | ||||||||||
| ||||||||||
