In contrast with the threshold of fatigue cracks, a series of regulation of expanding of fatigue small cracks has been deduced.
采用对比分析方法,从疲劳裂纹的门槛值角度出发,归纳总结了疲劳裂纹的扩展规律。
The contrast of the image was enhanced by gray expanding and the key threshold of the binarization algorithm was determined based on the dynamical threshold method.
通过灰度拉伸增强图像对比度,通过二值化处理实现图像中背景和对象的分割。
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