Grain boundary extraction method and device and grain boundary extraction model generation method and device

The embodiment of the invention provides a grain boundary extraction method and device and a grain boundary extraction model generation method and device. The grain boundary extraction method comprises the steps that a to-be-detected grain image is obtained; and performing grain boundary detection on the to-be-detected grain image through a pre-generated grain boundary extraction model to obtain agrain boundary image. In this way, the grain boundary is automatically extracted according to the grain image of the metal material through the pre-generated grain boundary extraction model, and theaccuracy and efficiency of grain boundary extraction can be improved. 本发明实施例提供一种晶界提取、晶界提取模型生成方法及装置，该晶界提取方法包括：获得待检测的晶粒图像；通过预先生成的晶界提取模型对所述待检测的晶粒图像进行晶界检测，获得晶界图像。这样，通过预先生成的晶界提取模型自动根据金属材料的晶粒图像来提取晶界，能够提高晶界提取的准确性和效率。