中文摘要：

为了解决三维造型中的曲面拼接问题，提出基于空间趋向曲线的网格曲面拼接方法．该方法有效地结合边界曲面的延伸信息，简单高效地构造光滑的过渡曲面；通过对两待拼接曲面边界点参数归一化，由参数聚类，建立曲面边界之间的匹配点对关系；在每对匹配点对之间构建由B6zier表征的空间趋向曲线，使空间曲线在对应点对上与待拼接曲面保持二阶连续；对空间趋向曲线族进行离散化和三角化，得到光滑的过渡曲面．结果表明，与其他传统方法比较，该方法在曲面拼接应用中具有高效可靠的优势．

英文摘要：

To solve surface stitching problem in 3D modeling, we proposed a method of spatial-trend-curate based mesh surface stitching. The method effectively combined potential extension information of bounda- ry to simply and efficiently construct smooth transitional surface, the corresponding-point-pairs between two boundaries of the separated surface were matched by parametric normalization and clustering~ a spa- tial-trend-curve represented by B~zier-curve with second-order continuity was generated on each pair of cor- responding points~ a smooth transitional surface was finally obtained by sampling and skinning the spatial- trend-curves. Results shows that our method have the advantage of high efficiency and reliability compared with other traditional methods.