Photogrammetry Essay

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Many great people have contributed to the development of photogrammetry. From the explanation of mathematical principles, the inventions of camera hardware and constant innovation of data capturing methods, each and every discovery lead to the modern digital photogrammetry that we know today.
In order to investigate the history of photogrammetry, one must first define exactly what photogrammetry means. According to the American Society for Photogrammetry and Remote Sensing, photogrammetry is the: “art, science, and technology of obtaining reliable information about physical objects and the environment, through processes of recording, measuring, and interpreting images and patterns of electromagnetic radiant energy and other phenomena” (ASPRS,2010).
This principle was later detailed by Leonardo Da Vinci in 1490. Camera obscura refers to a “darkened room” which was originally a room that was sealed from light with the exception for a tiny hole in one wall. An image could be projected, reversed or upside down, onto a wall or on a white screen opposite the opening. The image could then be traced on translucent paper (Hemphill, 2003). Perspective and projective geometry is considered to be the basic principles from which the theory of photogrammetry is developed (Klinkenberg, n.d.).
The next significant development was made in 1759 by John Heinrich Lambert, a Swiss polymath. He developed the mathematical principles of perspective imagery using space resections to find points in space from which the picture was made. This is relevant because later on the relationship between projective geometry and photogrammetry was explained by R. Strums and Guido Hauck in 1883 (Klinkenberg,
The first cycle, plane table photogrammetry, began in 1850 by Dr. Albrecht Meydenbauer. Meydenbauer had an accident where he almost fell down from the side of a cathedral while he was documenting it for an architectural survey. From this he realised that direct measurements from the façade of the cathedral could be substituted by indirect measurements obtained from photographic images. This was where the basic concept of photogrammetry was formed. Meydenbauer, from this point, devoted his life to the comprehension of this concept (Albertz, 2007).
Meydenbauer began designing cameras that had all the main components that are required for photogrammetric instruments. These included the integration of a coordinate system for the image (which was created by crosshairs that projected on the photoplate during exposure) as well as a fixed focus used to define the principal distance or focal length (Albertz, 2007). Despite all this, Meydenbauer’s method of indirect measurements from images was not accepted and only after an abundance of technical improvements to his camera design and practical experiments did he succeed. This was 25 years after his original idea of the use of photographs for the survey and documentation of buildings (Klinkenberg,

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