Shape quality measurement for 3D watermarking schemes

Patrice Rondao Alface; Benoit Macq

doi:10.1117/12.645661

17 February 2006 Shape quality measurement for 3D watermarking schemes

Patrice Rondao Alface, Benoit Macq

Proceedings Volume 6072, Security, Steganography, and Watermarking of Multimedia Contents VIII; 60721M (2006) https://doi.org/10.1117/12.645661
Event: Electronic Imaging 2006, 2006, San Jose, California, United States

Abstract

Shape quality assessment is a new challenge for a wide set of 3-D graphics applications and particularly for emerging 3-D watermarking schemes. In order to measure distortions new metrics have to be drawn between an original 3-D surface and its deformed version. These metrics are necessary to determine whether a deformation is perceptually acceptable and therefore whether this deformation should be considered while testing the robustness of a 3-D watermarking scheme. In this paper, we propose an objective metric based on the comparison of 2-D projections of the deformed and original versions of the shape. Rendering conditions are carefully specified as they play a key role on the human perception of the 3-D object. We compare the behaviors of this objective metric and of state-of-the-art metrics to subjective human perception for a set of deformations caused by watermarking schemes and usual watermarking attacks on several 3-D meshes. The protocol of these subjective psychovisual experiments is presented in detail. We discuss these experimental results for the purpose of the benchmarking of 3-D watermarking schemes.

Citation Download Citation

Patrice Rondao Alface and Benoit Macq "Shape quality measurement for 3D watermarking schemes", Proc. SPIE 6072, Security, Steganography, and Watermarking of Multimedia Contents VIII, 60721M (17 February 2006); https://doi.org/10.1117/12.645661

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