拐角点 meaning in English

cornerpoint

And about the symbols , after analyzed the structural properties of alphabetic and digital characters on vehicle license plate in detail , the dissertation selects features of minutiae , closed curve and corners in strokes as the foundation of character recognition to recognize characters in license plate
而对于符号，通过对车辆牌照上英文字符和数字字符结构特征的详细分析，选择字符中的细节点特征、闭合曲线特征和拐角点特征作为字符识别的依据，根据这些特征来识别牌照上的英文字母和数字字符。