Testing of the DR Method for Image Sharpness Determination

Testing of the DR Method for Image Sharpness Determination
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图像清晰度测定的 DR 方法测试

DOI:
10.1017/s1431927615011976
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发表时间:
2015
影响因子:
2.8
通讯作者:
J. Shah
J. Shah
中科院分区:
工程技术4区
文献类型:
--
作者:
M. Matthews;J. Shah

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如图1所示,该过程首先识别图像区域中的边缘,并绘制垂直于这些边缘的预定长度的轮廓。在用于本研究的软件版本中,拒绝了对比度不足的曲线(图1中以红色显示)。通过每个识别的轮廓拟合的误差函数的斜率参数的平均值给出图像的锐度值s。
The procedure, shown diagrammatically in Figure 1, is to first identify edges in the image area and draw profiles of predetermined length perpendicular to these. In the software version used for this study profiles with insufficient contrast are rejected (shown in red in Figure 1). The average of the slope parameters of an error function fitted through each of the identified profiles gives the sharpness value, s for the image.