The process of image treatment is as follow: filter, enhance, making binary image by adaptive threshold, edge detection and so on.
本文所采用的图像处理主要步骤为：滤波、增强、自适应阈值二值化、边缘提取等预处理。
Using minimum error method. Which belongs the global threshold, to attain binary image, so that background and object are distinguished.
采用全局阈值中的最小误差方法对图像进行二值化，以区别开背景和目标。
The grayscale threshold method was used in the image binary progress.
进行图像黑白二值化处理也同样是采用的灰度阈值法。
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