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一种新的形状特征――高斯描绘子

DOI: 10.11834/jig.20070317

Keywords: 形状特征,高斯势函数,高斯描绘子

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Abstract:

为了有效和正确地反映物体的形状特征,构造了一种基于物体轮廓曲线的新的不变量,即高斯描绘子。构造思路主要有两点:第一,定义一个具有平移、尺度不变性的函数――高斯势函数;第二,分别计算高斯势函数在8个同心圆上的平均值,从而获得8个不变量。相对其他的形状特征描述法,这些不变量不仅关于平移、旋转、尺度和反射不变,而且具有识别/匹配率高、计算量小、对适度的边缘变动和噪声不敏感以及适用范围广等优点。将这8个不变量应用于物体识别,实验结果表明,高斯描绘子的确具备上述优点。

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