Optical micrographs of cast iron with graphites labels according to ISO 945

This dataset comprise 19 micrographs acquired on different cast iron samples showing varying amounts of the different classes of graphite particles. They were all acquired at x100 magnification and all but one were digitalized with a resolution of 1280 x 1024 pixels, giving a pixel size of 0.8 µm. The last micrograph was acquired with a pixel size half that of the others. They have been automatically labelled by Image Analysis followed by manual corrections. The amount of corrections was around 37%. The labels are given by one color per graphite class (ISO 945): Orange for class I, Red for class III, Blue for class V and Green for class VI.

本数据集包含19张采集自不同铸铁试样的显微图像，图像中各类石墨颗粒的占比各不相同。所有图像均采用100倍放大倍率采集，除1张外，其余图像的数字化分辨率为1280×1024像素，对应像素尺寸为0.8微米；最后一张显微图像的像素尺寸为其余图像的一半。所有图像均先通过图像分析（Image Analysis）完成自动标注，随后经人工校正，校正比例约为37%。标注遵循ISO 945标准，按石墨类别分配对应颜色：I类石墨为橙色，III类为红色，V类为蓝色，VI类为绿色。