【摘要】 在医学图像三维表面建模中,会产生大量的三角面,难以在普通PC机上进行实时渲染.为了解决这个问题,本文作者提出一种改进的基于二次误差测度的网格简化算法.通过对顶点进行分类,在简化过程中更好地保持了模型的细节特征,同时考虑了网格中三角面的分布情况,减小了几何误差.结果表明,算法既保持了原算法快速的优点,又满足了医学图像处理对逼真度和网格质量的较高要求.更多还原

【Abstract】 During 3D medical image reconstruction,many triangles were produced,which were beyond the rendering capability of common PC.In order to solve the problem,this paper put forward an improved mesh simplification algorithm based on quadric error metrics.The algorithm,by classifying the vertices,preserved the specific features of the model during the process of simplification.Meanwhile,how triangles were distributed in the mesh was also taken into consideration and thus reduced geometric error.It has been proved that the new algorithm not only maintains high efficiency of the original algorithm,but also meets higher requirements of medical image processing in terms of fidelity and mesh quality.更多还原