Application development supporting orthophoto documentation

Abstract

We have developed a GIS algorithm that can support the project application processes with automatic and accurate GIS results that can be used for the planning and post- flight implementation documentation of orthophoto projects. The tools aim at easing the documentation of orthophotography projects both in the planning phase and after the completion of data acquisition, by providing qualitative information within the form of maps. The flight planning software available on the market have limited output capacities -they can output the photo footprints with correction based on terrain elevation- but they do not offer the capacity to extensively document photogrammetry project as it is expected in some state level applications. To cover this gap we have developed the three different following tools: 1) a tool issuing tables with the percentage of overlap between adjacent images; 2) A tool generating a map of the effective resolution where the variation of the resolution can be appreciated and 3) a tool targeting the buildings inclination that issues a map with the leaning percentage at each location. The two last solutions include corrections made from the terrain elevation.