An orthophoto is an aerial image that has been geometrically corrected such that the scale is uniform,  lens distortion, and camera tilt. An Orthophotomap is a raster image made by merging single ortho images is called orthomosaic. A digital orthophoto maps can be used to measure true distances Because It Is an accurate representation of the earth’s surface.

The Term True Orthophoto Is Generally Used For A Orthophoto Where the Artificial Surface Buildings And Bridges Are Included In The Digital Terrain Model Are Also Rectified in a true orthophoto.