11/30/2023 0 Comments Drone deploy autocadThe technology to create topographic maps using aerial photos allowed for mapping of otherwise inaccessible areas. This paved the way for the most primitive way of aerial mapping where multiple photographs were captured aboard a manned aircraft and painstakingly reconstructed. Indeed, it was with the military’s help that the technology marrying aerial photography and stereoscopy – the technique of combining two photographs to create a composite image with depth – was developed. They were also limited to areas that were easily accessible to humans – after all, trekking through forests and mountains while lugging along all the survey equipment did not sound like an appealing idea.Īlthough aerial photography had been a well-established practice long before this time, it was mostly used to take photographs of enemy camps during wartime. Although measurements made on the ground are very accurate and reliable (so accurate that these techniques are still used nowadays), they are simply impractical for covering large survey areas. The result of the processed data from a topographic survey is usually either a map of contour line showing points of equal elevation, or a fully-reconstructed 3D model of the area’s topography.īack in the 1950s, land surveys were done purely using ground measurement techniques. Also known as land survey, the data produced by this technique allows for the accurate identification and measurement of either natural or man-made structures within the survey area. A topographic survey, as its name implies, is a survey that determines the topography of a piece of land by measuring the elevation of individual points and reconstructing a model from these points.
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