ImageOP-Crack

ImageOP-Crack: The image dataset for crack detection in Brazilian cultural heritage buildings using deep learning The ImageOP-Crack is a new public dataset for crack detection in historical buildings. ImageOP-Crack contains 1,795 high-resolution images (4068 x 3456 pixels) with over 4,000 annotated crack labels, based on photographs collected from cultural heritage churches in the state of Minas Gerais, Brazil. Data Collection: the data collection process was carried out between May 17 and August 10, 2025. The main objective was to capture images of cracks present on the facades of historical buildings. For this purpose, a Kodak Pixpro AZ255 digital camera was used to photograph 24 religious buildings across four historic Brazilian cities: 1) Ouro Preto: UNESCO World Heritage Site since 1980. 2) São João del-Rei: IPHAN National Heritage Site since 1938. 3) Tiradentes: IPHAN National Heritage Site since 1938. 4) Itapecerica: Municipal Heritage Site since 2006. The photographed historical buildings preserve Brazilian colonial architecture developed during the 18th and 19th centuries. It is important to highlight that the conservation of these Brazilian cultural heritage buildings is a relevant factor, with these historic cities recognized as UNESCO World Heritage Site (Ouro Preto), National Heritage Sites (São João del-Rei and Tiradentes), and Municipal Heritage Site (Itapecerica). Notably, the main historic city photographed was Ouro Preto (OP), with 16 churches, hence, the dataset is named ImageOP-crack. Data Annotation: subsequently, the images were annotated using the Edge Impulse platform. For each image, labels were assigned, ranging from no label (no crack), one label (one crack), or multiple labels (several cracks in the photograph). The data are divided into two folders for training and testing deep learning systems. Additionally, the dataset includes a file with annotations for all 4,120 cracks, named info.labels.ImageOP-Crack：用于深度学习的巴西文化遗产建筑裂缝检测图像数据集 ImageOP-Crack是一款全新的公开数据集，面向历史建筑裂缝检测任务。 该数据集共包含1795张高分辨率图像（分辨率为4068×3456像素），附带超过4000个带标注的裂缝标签，数据采集自巴西米纳斯吉拉斯州的文化遗产教堂。 数据采集：本次数据采集工作于2025年5月17日至8月10日期间开展，核心目标为拍摄历史建筑外立面存在的裂缝。采集过程使用柯达Pixpro AZ255数码相机，对巴西四座历史城市中的24座宗教建筑进行了拍摄： 1) 欧鲁普雷图（Ouro Preto）：自1980年起列入联合国教科文组织（UNESCO）世界遗产名录 2) 圣若昂-德尔雷伊（São João del-Rei）：自1938年起列入巴西国家历史和艺术遗产研究所（IPHAN）国家遗产名录 3) 蒂拉登特斯（Tiradentes）：自1938年起列入IPHAN国家遗产名录 4) 伊塔佩塞里卡（Itapecerica）：自2006年起列入市级遗产名录 本次拍摄的历史建筑均保留有18至19世纪的巴西殖民时期建筑风格。需特别说明的是，对这些巴西文化遗产建筑的保护工作具有重要意义，上述四座历史城市分别被列入联合国教科文组织（UNESCO）世界遗产（欧鲁普雷图）、IPHAN国家遗产名录（圣若昂-德尔雷伊与蒂拉登特斯）以及市级遗产名录（伊塔佩塞里卡）。值得注意的是，本次采集的主要历史城市为欧鲁普雷图（简称OP），共拍摄16座教堂，因此该数据集被命名为ImageOP-Crack。 数据标注：后续采用Edge Impulse平台完成图像标注工作。针对每张图像，将分配三类标签：无裂缝（无对应标签）、单裂缝（单处裂缝）以及多裂缝（照片中存在多处裂缝）。 该数据集被划分为训练与测试两个文件夹，此外还附带一个包含全部4120个裂缝标注信息的文件，命名为info.labels。