结果：腰上三角的形态可为四边形、三角形和不规则形；

Results: In shape superior lumbar triangle was quadrilateral, triangular or irregular.

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目前迭代函数系统中的变换多限于仿射变换，而仿射迭代函数系统对于区域的任意四边形不规则剖分情形是不能实现的。

At present, the transform in IFS is limit to affine transform. However, affine IFS is unable to do anything with the anomalous dissection on discretionary quadrangle area.

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不规则多边形的识别是图形识别的重要内容，本文研究不规则三角形和四边形的模糊识别问题。

The recognition of irregular polygon is very important in figure recognition. In this paper, irregular triangle and square is studied using fuzzy pattern recognition.

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