(l)提出了基于最小二乘网格的自由变形技术。以最小二乘网格作为原始网格

的低分辨率网格，将两者之间的高低频差用局部标架编码，达到保持网格模型的

表面几何细节的目的。算法基本思想就是利用网格自由变形技术(均值坐标)控

制低分辨率的最小二乘网格，而不是直接控制原始网格 然后通过局部标架编码

重建变形后的网格。-(L) proposed a free-form deformation based on least squares of the grid technology. The least square grid as the original low-resolution mesh grid, the difference between the two high frequency fr a mes with local codes, to maintain the mesh of the surface geometry details of the purpose. The basic idea is to use grid algorithm is free-form deformation techniques (mean coordinates) to control low-resolution least-squares grid, rather than direct control of the original mesh　and then re-encoded fr a me by local deformation of the grid.