WCH-CD: A very-high-resolution dataset for architectural change detection in World Cultural Heritage sites

The dataset is organized into three directories: T1, T2, and GT. The T1 directory contains the first-temporal remote-sensing images, the T2 directory contains the corresponding second-temporal images, and the GT directory contains the change labels. In the GT masks, pixel values of 0, 1, and 255 denote unchanged areas, changed areas, and ignored data, respectively. Images with the same filename in T1, T2, and GT form one paired sample. The repository includes 23,725 image pairs containing change samples, and 50,000 extra image pairs without change samples.本数据集划分为三个目录：T1、T2与真值（Ground Truth，GT）目录。其中T1目录存储首时相遥感影像，T2目录存储与之对应的次时相遥感影像，GT目录则存放变化标签。在GT掩膜中，像素值0、1与255分别对应未变化区域、变化区域以及需忽略的数据。T1、T2与GT目录中文件名一致的影像将组成一组配对样本。本数据集共包含23725组含变化样本的影像对，以及额外的50000组无变化样本的影像对。