The border shape of skull is taken as identification target, extract characteristic depend on different algorithms, analyze and compare the result of different experiments.
以颅骨边界形状为识别对象，运用不同的算法进行特征提取，并结合实验结果对不同算法进行了分析比较。
It is proved this algorithm can not only extract the key points which can represent border shape, but also guarantee the reconstructed model have smooth surfaces.
实践表明，该算法既能准确提取边界形状的特征关键点，又保证了重构后曲面的光滑规整。
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