提出一种基于数据约束的黄瓜叶片参数化建模方法.该方法首先通过对真实叶片形态数据的统计分析获得叶脉分布以及叶缘特征两类形态特征参数,用来约束叶片整体形状并分区域描述叶缘形态细节,再根据参数值计算出叶片轮廓特征点的三维坐标,利用轮廓中轴骨架建模方法生成叶片的三维网格,最后采用纹理贴图技术增加真实感.试验结果表明,采用该方法可以快速、灵活地构建出黄瓜叶片的三维形态,具有较强的真实感效果.%A method for parameterized geometric modeling of cucumber leaf based on data constrains was presented. Firstly, the data of leaf was collected and measured, the statistics law was analyzed. Secondly, vein distribution and morphological characteristic parameters of two types of leaf margin were refined based on the law, which constrained the overall shape of leaves and described the details of leaf margin in the partition. According to the parameter values, the 3-D coordinates of contour feature points were calculated, and the 3-D grid was generated by Silhouette-axis skeleton modeling method. Finally, texture mapping was used for increasing the realism. The experimental results showed that the method could construct the 3-D model of cucumber leaf quickly and flexibly, and with good realism effect.
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