Title :
Spread transform and roughness-based shaping to improve 3D watermarking based on quadratic programming
Author :
Rolland-Neviere, Xavier ; Doerr, Gwenael ; Alliez, Pierre
Author_Institution :
Technicolor R&D France, Cesson-Sevigne, France
Abstract :
Modulating the distances between the vertices and the center of mass of a triangular mesh is a popular approach to watermark 3D objects. Prior work has formulated this approach as a quadratic programming problem which minimizes the geometric distortion while embedding the watermark payload in the histogram of distances. To enhance this framework, we introduce two watermarking components, namely the spread transform and perceptual shaping based on roughness information. Benchmarking results showcase the benefits of these add-ons with respect to the fidelity-robustness trade-off.
Keywords :
computational geometry; image watermarking; quadratic programming; transforms; 3D object watermarking improvement; distance histogram; distance modulation; geometric distortion minimization; perceptual shaping; quadratic programming problem; roughness information; roughness-based shaping; spread transform; triangular mesh center-of-mass; triangular mesh vertices; watermark payload; watermarking components; Cost function; Histograms; Measurement; Robustness; Three-dimensional displays; Transforms; Watermarking; 3D watermarking; roughness; spread transform;
Conference_Titel :
Image Processing (ICIP), 2014 IEEE International Conference on
Conference_Location :
Paris
DOI :
10.1109/ICIP.2014.7025968
