1. (a) What is the purpose of georeferencing?
Answers
What is the purpose of georeferencing?
Georeferencing is crucial to make aerial and satellite imagery, usually raster images, useful for mapping as it explains how other data, such as the above GPS points, relate to the imagery. Very essential information may be contained in data or images that were produced at a different point of time
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Explanation:
Georeferencing in the digital file allows basic map analysis to be done, such as pointing and clicking on the map to determine the coordinates of a point, to calculate distances and areas, and to determine other information.
*The objective of georeferencing is to establish a relationship between image pixel coordinates and a corresponding geographic coordinate system.
* Source image pixels are arranged exactly as they were initially digitized (or captured) during a scanning/collection process.
*Consistency, completeness, and reliability of referenced spatial information are simultaneously improved.
*It is crucial to make satellite and aerial as well as terrestrial imagery useful for mapping