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首页> 外文期刊>IEEE Transactions on Pattern Analysis and Machine Intelligence >On the edge location error for local maximum and zero-crossing edge detectors
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On the edge location error for local maximum and zero-crossing edge detectors

机译:局部最大和零交叉边缘检测器的边缘定位误差

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摘要

Examines the localization criterion for edge detection and determine the probability density function describing the edge location error. Canny (1986) defines the measure of localization as the reciprocal of the root-mean-square edge location error and formulates an expression of this measure for local maximum detectors. However, Tagare and deFigueiredo (1990) point out that an incorrect assumption is made in the calculation. The same procedure is used by Sarkar and Boyer (1991) for their localization measure for zero-crossing detectors. We modify the analysis and obtain a closed-form solution of the probability density function of the edge location error. Examination of the density function indicates the variance of the edge location error does not exist, and hence cannot be used directly as a measure of localization.
机译:检查边缘检测的定位标准,并确定描述边缘位置误差的概率密度函数。 Canny(1986)将定位的度量定义为均方根边缘位置误差的倒数,并为局部最大检测器制定了该度量的表达式。但是,Tagare和deFigueiredo(1990)指出,在计算中做出了不正确的假设。 Sarkar和Boyer(1991)使用相同的程序对过零检测器进行定位。我们修改分析并获得边缘位置误差的概率密度函数的闭式解。密度函数的检验表明不存在边缘定位误差的方差,因此不能直接用作定位的度量。

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