Orthophoto Nittedal IR 2013

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. Orthophoto “infrared” is footage where one of the color channels has been replaced by footage in the near-infrared area, and the images are particularly suitable for vegetation mapping. Ground resolution ranges from 0.1 m – 0.5 m. Accuracy ranges from ± 0.35 – 2 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。正射影像可分为适配不同应用场景的多种标准类型。红外型正射影像是将其中一个色彩通道替换为近红外波段影像所得到的影像数据，此类影像尤其适用于植被测绘。该类影像的地面分辨率范围为0.1米至0.5米，定位精度范围为±0.35米至2米。