提出一种基于奇异值分解的三角网格模型数字水印算法，该算法主要思想在于把水印信息嵌入到奇异值为零的地方，由于零值的特点使得算法不可逆，从而成功抵御了解释攻击。该算法简单，并可以快速嵌入到大规模三角网格模型里。通过几种不同的攻击实验，验证了算法具有很好的鲁棒性，最后还对构造不可逆算法的必要条件进行了总结。

This paper presents a novel watermarking scheme based on singular value decomposition(SVD) for 3D meshes, it embeds the watermark into the singular values which equal zero. This watermarking scheme is non-invertible, since the singular value is zero. This algorithm can quickly embed the watermark to large-scale 3D meshes and is robust to various attacks. Finally we analyze some necessary conditions to construct the non-invertible scheme.