The Roussilhe oblique stereographic projection is a
mapping projection
Projection, projections or projective may refer to:
Physics
* Projection (physics), the action/process of light, heat, or sound reflecting from a surface to another in a different direction
* The display of images by a projector
Optics, graphic ...
developed by Henri Roussilhe in 1922. The projection uses a truncated series to approximate an
oblique
Oblique may refer to:
* an alternative name for the character usually called a slash (punctuation) ( / )
* Oblique angle, in geometry
*Oblique triangle, in geometry
*Oblique lattice, in geometry
* Oblique leaf base, a characteristic shape of the b ...
stereographic projection
In mathematics, a stereographic projection is a perspective projection of the sphere, through a specific point on the sphere (the ''pole'' or ''center of projection''), onto a plane (geometry), plane (the ''projection plane'') perpendicular to ...
for the
ellipsoid
An ellipsoid is a surface that may be obtained from a sphere by deforming it by means of directional scalings, or more generally, of an affine transformation.
An ellipsoid is a quadric surface; that is, a surface that may be defined as the ...
. The projection received some attention in the former Soviet Union.
[Snyder, John P. (1993). ''Flattening the Earth: Two Thousand Years of Map Projections'' p. 169. Chicago and London: The University of Chicago Press. .]
The development of the Bulgarian oblique stereographic projection was done for Romania by the Bulgarian geodesist, Hristow, in the late 1930s.
See also
*
Map projection
In cartography, map projection is the term used to describe a broad set of transformations employed to represent the two-dimensional curved surface of a globe on a plane. In a map projection, coordinates, often expressed as latitude and longitud ...
References
External links
libproj4 cartographic projection library with Roussilhe oblique stereographic projection support
Map projections
Conformal projections
{{Cartography-stub