Theodor Scheimpflug

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Theodor Scheimpflug (no year)
Memorial plaque on Scheimpflug's house
Scheimpflug's house in Sternwartestraße 39, Vienna-Währing

Theodor Scheimpflug (born October 7, 1865 in Vienna , † August 22, 1911 in Vorderbrühl ) was an Austrian geodesist , after whom Scheimpflug's rule of photogrammetry is named.

Life

Family grave of the Scheimpflug family in Hinterbrühl

Theodor Scheimpflug was born in Vienna as the son of bank director Josef Scheimpflug (1829–1899) and his wife Ernestine Rinna von Sarenbach (1831–1906). He had the two brothers Karl (1856-1944), lawyer and tax clerk, and Max Scheimpflug (1858-1930), doctor and clinic owner. In Vienna he attended the Academic Gymnasium and graduated from the Naval Academy Fiume . In 1883 he retired as a midshipman in the Navy. As this he went on long journeys. In 1888 he was promoted to ensign of the liner. As this he worked for the hydrographic office and the naval observatory Pola .

Because of his interest, he was given leave in 1896 to study mechanical engineering and photogrammetry at the Vienna University of Technology . In 1897 he began to work on photo topography at the Imperial and Royal Military Geographic Institute .

In 1901 an inheritance made it possible for him to retire, in which he continued his life's work: creating maps using aerial photographs . With these experiments he met with little understanding from his military superiors throughout his life; his knowledge only gained importance in the First World War , i.e. after his death. He is buried in the family grave in the Hinterbrühl .

Importance to photography

Scheimpflug photographed the landscape from a balloon or kite . In order to cover as large an area as possible, he also made oblique views that cannot be used directly for a map, but have to be rectified. For this purpose, he created a special equalization device (a kind of enlarger ), which was completed in 1906. As early as 1903 the Dresden company Ernemann von Scheimpflug had acquired the patent for this device, initially called the "photospectrograph", and from 1914 it was mass-produced for war use under the name "Basic image rectifier for rectifying aerial images".

In 1907 Theodor Scheimpflug published the fundamental work The production of maps and plans by photographic means. The resulting rule for setting between the object plane (here the negative of the oblique photograph to be corrected), the objective plane and the image plane became important for professional photography: the object plane, the objective plane and the film plane must meet at a common intersection (or rather) a common cutting edge . It is already used when taking a picture when oblique views are to be shown in focus, which is a common occurrence in architecture and product photography in particular: The technical term is shifting focus according to Scheimpflug .

Works

Appreciation

literature

Individual evidence

  1. ↑ Franz Allmer: Scheimpflug Theodor in: New German Biography 22 (2005), pp 636-637 ( online version Retrieved on April 22, 2020.).
  2. ^ Estates in Austria: Theodor Scheimpflug . Retrieved April 22, 2020.
  3. ↑ Alexander Gall (Ed.): Constructing, Communicating, Presenting: Images of Science and Technology. Wallstein-Verlag, Göttingen 2007, p. 95.
  4. ^ Christian Matzner (red.), Marianne Boller: Theodor Scheimpflug, 1865-1911. Mödling pioneer of aerial photogrammetry. Festschrift for the 150th birthday . District Museum Association, Mödling 2015, OBV .
  5. ↑ Austrian Library Association .

Web links

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personal data
SURNAME Scheimpflug, Theodor
BRIEF DESCRIPTION Austrian officer, discoverer of the photographic rule
DATE OF BIRTH October 7, 1865
PLACE OF BIRTH Vienna
DATE OF DEATH August 22, 1911
Place of death Vorderbrühl