Photogrammetry has been defined by the American Society of Photogrammetry and remote sensing (ASPRS) as “the Art ,Science and technology of obtaining reliable information about physical objects and environment through the process of recording ,measuring and interpreting photogrammetric images and patterns of recorded radiant electromagnetic energy and other phenomena.”
History of Photogrammetry in details
-In 350 B.C.Aristotle had referred the process of projecting images optically.
-1839 when Louis Daguerre of Paris announced his direct photographic process. In this process the exposure was made on metal plates that had been light-sensitized with a coating of silver iodide.
-Aime Laussedat develops the first photogrammetrical devices and methods. He is seen as the initiator of photogrammetry.
-In 1859 Colonel Laussedat presented an accounting of his success in mapping using photographs .His pioneer work and dedication to this subject earned him the Title of “Father of Photogrammetry”.
-Topographic mapping using photogrammetry was introduced in North America in 1886 by Captain Eduard Deville, The Surveyor General of Canada. He found Laussedat’s principles very convenient for mapping the rugged mountains of Western Canada.
-The developments in photogrammetry, from around 1850, have followed four development cycles [Konecny, 1985]. Each of these periods extended about fifty years. These cycles include:
-Plane table photogrammetry, from about 1850 to 1900,
-Analog photogrammetry, from about 1900 to 1960,
-Analytical photogrammetry, from about 1960 to present, and
-Digital photogrammetry, which is just beginning to be a presence in the photogrammetric industry.
In 1901, Dr. Carl Pulfrich (September24, 1858 - August 12, 1929), a German physicist, designed the first stereo comparator employing x and y coordinate scales.
This was the first photogrammetric instrument manufactured by Zeiss. Pulfrich is sometimes referred to as the "Father of Stereophotogrammetry“.
In colonel Laussedat experiments kites and balloons were used for taking aerial photographs .The airplane was first used in 1913 for obtaining the photographs for mapping purpose.
The many advancements are too numerous to itemize here ,but collectively they have enabled the photogrammetry to become the most accurate and efficient method available for compiling maps and generating topographic information. The improvements have affected all aspects of Science and they incorporate many new developments such as those in optics, electronics ,computers and satellite technology.
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