COG 是Cloud Optimized GeoTIFF's的简称,从这个名字就能大概猜出他的意义——云端优化的 GeoTIFF。GDAL 官方WIKI定义如下: A cloud optimized GeoTIFF is a regular GeoTIFF file, aimed at being hosted on a HTTP file server, whose internal organization is friendly for consumption by clients issuing HTTP ...