Applying the radial section scanning method based on gray centroid, the image edges are tested with a sub-pixel precision.
采用基于灰度质心法的径向截面扫描法对图像边缘进行亚像素级检测；
The experimental results show the centroid method has an advantage over the maximum gray level method.
实验结果表明，利用质心法测定的蛋白分子量比最大灰度法测定的更接近于标准分子量。
The experimental results show the centroid method has an advantage over the maximum gray level method.
实验结果表明，利用质心法测定的蛋白分子量比最大灰度法测定的更接近于标准分子量。
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