Geomatics

Three-Dimensional Positioning

Surveying or land surveying is the technique and science of accurately determining the terrestrial or three-dimensional space position of points and the distances and angles between them. These points are usually on the surface of the Earth, and are often used to establish land maps and boundaries for ownership or governmental purposes. In order to accomplish their objective, surveyors use elements of geometry, engineering, trigonometry, mathematics, physics, and law.

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Photogrammetry

Aerial Photography

Photogrammetry may be defined as the art, science, and technology of obtaining reliable information about physical objects and the environment. This is done through a process of recording, measuring, and interpreting aerial and terrestrial photographs. In a sense, the word photogrammetry may be analyzed in two parts: photo – meaning “picture,” and grammetry – meaning “measurement.” Therefore; photo-measurement.

Early developments in the theory and science of photogrammetry occurred many years before the actual invention of a suitable means to apply the application. As time pressed on, the theories became reality, and the necessary technologies became available. The timing could not have been better. Photogrammetry has become one of the most widely and technically accepted means for creating maps. Most of the development began in European countries and later spilled over into the U.S. and Canada.

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