Threshold translation is the realization of the conversion from the grey graph to binary image.
本文利用灰度直方图首先显示图像的灰度分布情况，然后根据它来选择图像的阈值，再通过阈值变换实现二值图像的获得。
参考来源 - 力学性能曲线的计算机识别技术·2,447,543篇论文数据，部分数据来源于NoteExpress
中值滤波，该函数用来对图像进行阈值变换。
Median filter, the function is used to transform the image threshold.
说明：MF C实现灰度图像的各种点运算，如图像反色，窗口变换，线性变换，阈值变换，灰度均衡等。
MFC to achieve a variety of gray-scale image point operations, such as anti-color images, the window transform, linear transformation, threshold transform, gray balance, etc.
本系统采用最优阈值变换提取目标物体轮廓，完成了一个能够实现对气泡的偏移进行检测和对图像的状态进行模式识别的图像处理和识别系统。
The calibration system utilizes the combination of advantages of optimal thresholding and contour tracking to analyze the image of air bubble and recognize its features.
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