A coal maceral dataset with corresponding labels

This is a coal maceral dataset including maceral group images (vitrinite, inertinite, liptinite) and corresponding annotated images. The images are collected from the USGS and fifteen mining areas of China and the labels are annotated through the Neoimaging app. There are 697 coal maceral images and 319 labeled images in the dataset. These images have been improved the quality and resolution using MejorarImagen software. Among the labeled images, red is used for vitrinite, yellow for inertinite, and blue for liptinite. The petrographic analyses for coal samples from coal maceral dataset are included in vitrinite reflectance.xlsx.本数据集为煤显微组分（coal maceral）数据集，涵盖三大煤显微组分组图像：镜质组（vitrinite）、惰性组（inertinite）、壳质组（liptinite），以及对应的标注图像。图像采集自美国地质调查局（USGS）与中国15个矿区，标注工作通过Neoimaging应用完成。本数据集共包含697张煤显微组分图像与319张标注图像，所有图像均通过MejorarImagen软件优化了质量与分辨率。在标注图像中，红色代表镜质组，黄色代表惰性组，蓝色代表壳质组。本数据集所涉煤样的岩石学分析数据已收录至vitrinite reflectance.xlsx文件中。