Orthophoto of the Czech Republic - Sobotka 3-4

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位色彩深度的捷克数字化近乎无缝正射影像（orthophoto）。该栅格图像（Ortofota ČR）的地面采样距离分别为：东部波段对应地形平均高程平面的0.200米，西部区域对应0.125米。捷克正射影像的位置精度持续优化，其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年度捷克正射影像的精度评估工作尚未完成。该数据集以JPG图形栅格格式进行分发，分幅单元采用SM5规格，每个分幅对应地面2.5×2公里的范围。