patches and local annotations, slide 049, zoom 248x248 um2

patches and local annotations: data for slide with ID of the last 3 characters of the file name: local annotations in csv format and a folder with patches at zoom level indicated at the 6th character of the file name图像块（patches）与局部标注数据集：该数据集对应以文件名最后3个字符作为ID的切片（slide），包含CSV格式的局部标注文件，以及一个存储特定缩放层级图像块的文件夹，该缩放层级由文件名的第6个字符指定。