Tilted perspective



Available forms

Forward and inverse, spherical projection

Defined area


Implemented by

Gerald I. Evenden



Height (in meters) above the surface. Required.


Bearing (in degrees) from due north.


Angle (in degrees) away from nadir.


Latitude (in degrees) of the view position.


Longitude (in degrees) of the view position.

Tilted perspective

Tilted Perspective is similar to Near-sided perspective (nsper) in that it simulates a perspective view from a hight. Where nsper projects onto a plane tangent to the surface, Tilted Perspective orients the plane towards the direction of the view. Thus, extra parameters azi and tilt are required beyond nsper`’s h. As with nsper, lat_0 & lon_0 are also required for satellite position.