A new image-processing method based on block-gradient segmentation was proposed to measure the volume fraction of mechanical twins in metallographic images. The processing results showed that this automatic method could be used for rapid and effective measure of the twin-volume fractions of twinning-induced plasticity steels in metallographic images under different strain conditions. The entire processing time for each image is relatively short, which would benefit researchers processing a large number of metallographic images. This method may pave a way to develop a simple, effective plug-in to measure rapidly the twin-volume fractions in the software for metallographic observations, and it would be beneficial for preliminary analysis of microstructural evolutions and subsequent characterization of mechanical twins by high-resolution microscopy using electron microscopy.

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中文翻译：

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孪生诱导塑性钢的金相图像中机械孪晶的定量分析

提出了一种基于块梯度分割的图像处理新方法，用于测量金相图像中机械孪晶的体积分数。处理结果表明，该自动方法可用于快速，有效地测量不同应变条件下双相诱导塑性钢在金相图像中的双相体积分数。每个图像的整个处理时间相对较短，这将有利于研究人员处理大量金相图像。这种方法可能为开发简单有效的插件铺平了道路，该插件可快速测量金相观测软件中的孪晶体积分数，

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