Method for automatically overcoming defects of cement paste backscattered electron image sample preparation

The invention relates to a method for automatically overcoming defects of cement paste backscattered electron image sample preparation. The method includes the following steps that firstly, images are read; secondly, binarization processing is performed on gray-scale images; thirdly, the defects of sample preparation are automatically overcome with the filtering method; fourthly, the area of cement clinker which is not hydrated is calculated, and when the number of the images is large, a batch processing method is adopted, wherein all image files are named in a normalized mode firstly, then the original grey-scale images are translated into binary images one by one according to the first step and the second step, finally, the third step and the fourth step are executed repeatedly, the defects of sample preparation of all the images are automatically overcome, and meanwhile a calculation result of the area of clinker particles which are not hydrated in each image is output. According to the image processing method, later-stage processing time of the backscattered electron images can be saved, and errors generated by inconsistent standards of manual operation are avoided.