Ortofoto Ål 1964

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，且可与参考坐标系建立关联。正射影像可依据不同应用场景划分为多种适配的分类标准。 Ortho类正射影像的覆盖范围以密集且零散的居民点与农业区域为主。 该类影像的地面分辨率通常介于0.15米至0.25米之间，定位精度为±0.50米。