True Digital Orthophoto (TDOP) Series

True Digital Orthophoto (TDOP) Series is produced from Digital Aerial Photos (UE Version) which are taken at flying height of about 12,000 feet, and processed using Digital Surface Model. The TDOP has an image resolution of 0.25m in terms of ground sample distance per pixel covering the whole territory of Hong Kong Special Administrative Region.The TDOP Series is supplied on tile basis and each tile is equivalent to the coverage of the corresponding 1:5000 topographic map tile. It consists of 192 tiles provided in GeoTIFF format including a World file with geo-referencing data in Hong Kong 1980 Grid.