What is GIS Answered

A geographic information system (GIS) is a system designed to capture, store, manipulate, analyze, manage, and present spatial or geographic data.

In general, the term describes any information system, which integrates, stores, edits, analyzes, shares, and displays geographic information. GIS applications are tools, which allow users to create interactive queries (user-created searches), analyze spatial information, edit data in maps, and present the results of all these operations.

Difference Between GIS And Geospacial

There is an increasing trend to use the term geospatial instead of GIS.  What is the difference between geospatial and GIS?  Some people use the terms interchangeably, however, there is a distinct difference between the two.

GIS refers more narrowly to the traditional definition of using layers of geographic data to produce spatial analysis and derivative maps.  Geospatial is more broadly use to refer to all technologies and applications of geographic data.

Types of Photogrammetry

There are two primary types of photogrammetry: aerial and close range.

Aerial Photogrammetry

The process of utilizing a drone or aircraft to produce aerial photography, which can be turned into a 3D model or mapped digitally.

Close Range photogrammetry

Close range photogrammetry is when images are captured using a handheld camera or with a camera mounted to a tripod. The output of this method is not to create topographic maps, but rather to make 3D models of a smaller object.