Orthophoto of the Czech Republic - Ostrava 3-9

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.本数据集为采用8位色彩分级的捷克共和国数字无缝正射影像（orthophoto）。捷克正射影像（Ortofota ČR）的栅格图像像素，在地形平均高程面上，东带对应0.200米的地面范围，西带则对应0.125米的地面范围。该捷克正射影像的定位精度持续提升，以平均定位误差作为核心衡量指标；2019至2020年间，其平均定位误差介于0.20至0.21米之间。2021年该正射影像的精度评估工作尚未完成。捷克正射影像（Orthofoto ČR）以JPEG（JPG）图形栅格格式进行分发，其分发单元为对应2.5×2千米地形范围的SM 5级分幅。