使用高斯函数的一阶导数作为基本小波，对曲线的方向角函数进行多尺度小波分析得到候选点集，提出了四个筛选规则对候选点集进行逐步筛选得到正确角点集。
Firstly, using the first order derivative of Gaussian function as the base wavelet, the direction Angle function of a planar curve was analyzed on multiple scales to obtain the candidates of corners.
最后，对典型的多峰函数优化试验表明：作者开发的粒子群优化算法结构简单，运行快，是一个通用有效的优化工具。
Finally, the experimental results show that this algorithm which developed by us is an universal and effective optimization tool with simple structure and little running time.
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