Digital Orthophotos (DOP) — Fly 2021, Aue

Orthophotos are equal to the plane, georeferenced aerial images. The projection of the aerial images is carried out via a digital terrain model of the Earth’s surface. The DOPs of the area are available as four-channel DOP (RGBI). From this, DOP can be derived in the types Panchromatic (PAN), Color (RGB) and Color Infrared (CIR). The DOPs are updated in the 2-year cycle with changing summer and spring flying, assuming the realisation of the regular flight.正射影像（Orthophoto）是具备平面几何精度且经过地理参考的航空影像。其航空影像的正射校正投影依托地表数字地形模型（DTM）实现。该区域的数字正射影像产品（DOP）以四波段（RGBI）格式提供。基于该四波段产品，可衍生出全色（PAN）、真彩色（RGB）与彩色红外（CIR）三种类型的数字正射影像产品。若按计划落实常规飞行任务，该类数字正射影像产品将以两年为周期，通过轮换开展夏季与春季飞行作业完成更新。