Orthophoto of the Czech Republic - Aš 4-1

Digital seemingly seamless orthophoto of the Czech Republic in a 8-bit color scale. The pixel of the raster image Ortofota ČR displays 0.200 m (band „East), resp. 0.125 m ("West" zone) of the area in the middle plane of the terrain. The orthophoto of the Czech Republic is constantly improving its positional accuracy characterized by a mean positional error, this error ranged from 0.20 to 0.21 m in the years 2019 - 2020. The evaluation of the accuracy of the orthophoto of the Czech Republic in 2021 has not yet been completed. Orthofoto ČR is distributed in graphic raster formats JPG in dispensing units with a size showing 2.5 x 2 km of terrain in the SM 5 clade.本数据集为捷克共和国数字化无缝正射影像图（orthophoto），采用8位色彩深度。该栅格影像（Ortofota ČR）的像元分辨率分别为东带0.200米、西带0.125米，对应地形中平面的实地范围。捷克共和国正射影像图的位置精度持续提升，以平均位置误差作为精度表征指标；2019至2020年间，该误差区间为0.20至0.21米。2021年度该正射影像图的精度评估工作尚未完成。Orthofoto ČR以JPG图形栅格格式分发，分幅单元对应实地2.5×2千米的范围，采用SM5级分幅标准。