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基于三次Bézier曲线模型的空间矩亚像素边缘定位算法

DOI: 10.11834/jig.20091010

Keywords: 亚像素边缘定位,空间矩,三次Bézier曲线

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Abstract:

针对已有直线模型和抛物线模型空间矩亚像素定位算法对存在拐点边缘进行定位的局限性,提出了一种基于三次Bézier曲线模型的定位算法,并利用Levenberg-Marquardt迭代法来确定三次Bézier曲线的控制顶点。仿真实验结果表明,当边缘轮廓类似存在拐点的曲线时,该模型的定位精度明显高于已有的其他模型。由于该模型只是基于理想的阶跃边缘,故对于其他类型的边缘的定位尚有待进一步研究。

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