Integration of calculation models and CAD systems in building services design
Computer-Aided Design
Watermaking three-dimensional polygonal models
MULTIMEDIA '97 Proceedings of the fifth ACM international conference on Multimedia
A Shape-Preserving Data Embedding Algorithm for NURBS Curves and Surfaces
CGI '99 Proceedings of the International Conference on Computer Graphics
Technical Section: Subdivision surface watermarking
Computers and Graphics
Watermarking algorithms for 3D NURBS graphic data
EURASIP Journal on Applied Signal Processing
A New Watermarking Method for 3D Models Based on Integral Invariants
IEEE Transactions on Visualization and Computer Graphics
Affine-Transformation-Invariant Public Fragile Watermarking for 3D Model Authentication
IEEE Computer Graphics and Applications
Watermarking 3D mesh by spherical parameterization
Computers and Graphics
Optimization approach for 3D model watermarking by linear binary programming
Computer Aided Geometric Design
CAD drawing watermarking scheme
Digital Signal Processing
Technical Section: Robust and blind mesh watermarking based on volume moments
Computers and Graphics
Watermarking for 3d CAD drawings based on three components
SSPR'06/SPR'06 Proceedings of the 2006 joint IAPR international conference on Structural, Syntactic, and Statistical Pattern Recognition
Topological synchronization mechanism for robust watermarking on 3D semi-regular meshes
ICME '11 Proceedings of the 2011 IEEE International Conference on Multimedia and Expo
A Comprehensive Survey on Three-Dimensional Mesh Watermarking
IEEE Transactions on Multimedia
A Sequential Quantization Strategy for Data Embedding and Integrity Verification
IEEE Transactions on Circuits and Systems for Video Technology
A robust high-capacity affine-transformation-invariant scheme for watermarking 3D geometric models
ACM Transactions on Multimedia Computing, Communications, and Applications (TOMCCAP) - Special Issue on Multimedia Security
Q-Complex: Efficient non-manifold boundary representation with inclusion topology
Computer-Aided Design
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Topology authentication for computer-aided plant design (CAPD) models features intrinsically complex topological relations. This study investigates a semi-fragile watermarking scheme for CAPD models represented by parametric solids, which offers a solution to the problem of topology authentication. We first analyze the geometrical and topological structures of CAPD models. Then, we propose an effective semi-fragile watermarking method for topology authentication, which is based on Laplacian coordinates and quantization index modulation (QIM), against several attacks. We compute the custom Laplacian coordinate vector for each marked connection point according to the topological relation among joint plant components. The topology-based watermark for each marked connection point is generated from selected attributes of its joint plant component. Watermarks are inserted into the coordinates of marked connection points by adjusting the lengths of their Laplacian coordinate vectors. Both experimental results and theoretical analysis demonstrate that our approach can not only detect and locate malicious topology attacks, such as component modification and joint ends modification, but is also robust against various non-malicious attacks, such as similarity transformations and level-of-detail (LOD).