...特征参数化； 附加自由曲面特征； 有效性维护 [gap=975]Key words：freeform feature; feature class specification; feature parameterization; freeform feature with attachment; validity maintenance ..
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To study parameterization modeling technology based on feature.
基于特征的参数化建模技术的研究。
It is designed out in accord with two principles: one is the spectral feature optimization and parameterization, another is fuzzy and expert decision in pixel identification.
这种算法主要体现了两大原则，一是基于待分类别的光谱特征优化与参量化原则，二是类别判定中的模糊定义与专家决策原则。
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