Orthophoto Sortland 2017

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 10: Normally covers urban areas and development areas where there is a need for good location accuracy and high resolution. The ground solution is usually 0.04 – 0.15 m. Accuracy ± 0.35 m.正射影像（Orthophoto）具有与地图相一致的几何属性，且可与参考坐标系关联。 正射影像可分为适配不同应用需求的多种标准类型。 Ortho 10标准正射影像： 该类影像通常覆盖对定位精度与高分辨率有较高要求的城市建成区与开发区域。其地面分辨率通常为0.04至0.15米，定位精度为±0.35米。