dcher95/git10m-instances

Git-10M实例标注数据集（v1.0）包含101.6百万个多边形级别的对象标注，覆盖72个地理区域，这些标注锚定到Git-10M卫星图块（缩放级别10-18）。每个实例是一个多边形（如建筑足迹或OpenStreetMap区域特征），带有结构化的OpenStreetMap标签，并已投影到其最深包含的Git-10M图块的256×256像素框架中。该数据集仅包含标注信息，卫星图像需从lcybuaa/Git-10M数据集中单独获取。标注数据来源于Microsoft全球建筑足迹（主要用于建筑）和OpenStreetMap（用于标签和非建筑多边形），适用于特征提取、图像分类、图像到图像等任务，并支持地理空间分析和检索应用。A dataset containing 101.6 million polygon-level object annotations across 72 geographic regions, anchored to Git-10M satellite tiles at zoom levels 10–18. Each instance is a polygon (building footprint or OSM area feature) with structured OSM tags, projected into the pixel frame of its deepest containing Git-10M tile. This is an annotations-only release, with satellite imagery available separately from lcybuaa/Git-10M. The annotations are derived from Microsoft Global Building Footprints (primary for buildings) and OpenStreetMap (for tags and non-building polygons), suitable for tasks such as feature extraction, image classification, image-to-image, and supporting geospatial analysis and retrieval applications.