The procedures of generating digital orthophoto using Erdas Imagine software are; Creation of Imagine Orthbase project, Creation of Image Pyramid, Interior Orientation, Exterior Orientation, DTM extraction, and Orthorectification.
During the creation of imagine orthobase project the following tasks were conducted; selection of geometrical model, setting reference system, setting reference units, and setting specific information. Figure 1.3 shows imagine orthobase project (block file) created before adding image