GIS - Digital Photogrammetry

Photogrammetry is the art, science, and technology of obtaining reliable information about physical objects and the environment through the process of recording, measuring, and interpreting photographic images and patterns of electromagnetic radiant energy and other phenomena.

With the introduction of computer-based, softcopy photogrammetric mapping and GIS systems that operate in a desktop computing environment prove to be a more economical solution for many mapping and GIS database construction tasks. It also presents visual reference of the earth's surface, providing a clear image base for design engineering, asset management, planning, and change detection, among others.

Utilizing photogrammetric processes, we can extract vector data such as contours, street centerlines, hydrography, utilities, vegetation, building footprints, etc. This data can be populated with attribute information pertaining to each feature, thus creating an intelligent database related to a particular geographic area.