网格谱系数下不可见性指导的鲁棒水印算法

doi:10.3969/j.issn.0255-8297.2025.03.002

Abstract

Abstract: In the field of copyright protection, mesh watermarking is a key technology for protecting 3D models from malicious attacks during transmission. However, existing watermarking algorithms for 3D meshes often fail to effectively connect the spatial and frequency domains and the setting rule of watermark embedding strength is not clear enough. To solve this problem, we propose a robust mesh watermarking algorithm guided by invisibility (RWGI). Taking the Laplacian transform of a mesh as an example, we establish, for the first time during the watermark embedding process, a model that characterizes the relationship between the spatial-domain invisibility evaluation index and the spectraldomain embedding strength. In this way, the watermark embedding can be adaptively guided by the invisibility index, ensuring the quantification of the watermark embedding strength on demand. Additionally, we design a spectral coefficient optimization strategy based on absolute value, along with a simple yet efficient watermarking segmentation algorithm. Experimental results show that the proposed algorithm achieves strong invisibility, robustness against common attacks, and adaptive control of watermark embedding intensity with respect to model scale.

Key words: 3D copyright protection, invisibility, mesh spectral watermark, mesh Laplace transform

CLC Number:

TP309.2

WU Xiao, HUANG Ying, SONG Chunhua, GUAN Hu, NIU Baoning. Robust Watermarking Algorithm Guided by Invisibility Under Mesh Spectral Coefficients[J]. Journal of Applied Sciences, 2025, 43(3): 370-386.

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Robust Watermarking Algorithm Guided by Invisibility Under Mesh Spectral Coefficients

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