Orthophoto Hedmarken 2010

Orthophoto has the same geometric properties as a map and can be linked to a reference system. Orthophotos are divided into different orthophoto standards suitable for different purposes. Photo by Ortho: Covers areas that mainly consist of dense and scattered settlements and agricultural areas. Ground resolution is usually > 0.15 – 0.25 m. Accuracy ± 0.50 m.正射影像（Orthophoto）具备与地图一致的几何特性，且可与参考坐标系关联。正射影像可根据不同应用场景划分为多种适配的标准类型。Ortho类正射影像：覆盖区域以密集与分散并存的聚落及农业用地为主。地面分辨率通常为0.15~0.25米，平面定位精度为±0.50米。