【摘要】 空间矩既可提取边缘特征,也可提取角特征.首先通过分析角特征模型的空间矩计算公式,推导出空间矩生成的多项式对角特征像素的判别准则;然后基于Kitchen和Wang的角特征提取方法,提出利用梯度角的变化作为角特征像素的另一个判断准则.实验结果表明,利用这两个判别准则可准确可靠地判别角特征像素,并且具有一定的鲁棒性.更多还原

【Abstract】 Spatial moment may be utilized not only to edge extraction, but also to corner detection. By analyzing mathematical formula of spatial moment at corner-model, the spatial-moment-generating polynomials are used as one decision rule of corner detection measure. Then, based on Kitchen′s corner measure and Wang′s corner measure, the gradient-direction change is employed as another decision rule of corner detection. The experiment shows that the corner detection measure, which makes use of the two decision rules, not only may accurately and reliably detect the corner but also is robust to noise.更多还原