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Linear or point-projection perspective (from Latin perspicere ' to see through ') is one of two types of graphical projection perspective in the graphic arts; the other is parallel projection. [ citation needed ] [ dubious – discuss ] Linear perspective is an approximate representation, generally on a flat surface, of an image as it is seen ...
A photo demonstrating a vanishing point at the end of the railroad. A vanishing point is a point on the image plane of a perspective rendering where the two-dimensional perspective projections of parallel lines in three-dimensional space appear to converge.
In painting, photography, graphical perspective and descriptive geometry, a picture plane is an image plane located between the "eye point" (or oculus) and the object being viewed and is usually coextensive to the material surface of the work.
Perspective distortion occurs in photographs when the film plane is not parallel to lines that are required to be parallel in the photo. A common case is when a photo is taken of a tall building from ground level by tilting the camera backwards: the building appears to fall away from the camera.
In the perspective of a geometric solid on the right, after choosing the principal vanishing point —which determines the horizon line— the 45° vanishing point on the left side of the drawing completes the characterization of the (equally distant) point of view. Two lines are drawn from the orthogonal projection of each vertex, one at 45 ...
In the fourth image at the lower right, taken with the widest lens, the building behind the object appears much further away than in reality. Photos taken using a 35 mm camera with a 100 mm, a 70 mm, a 50 mm, and a 28 mm lens, at different distances from the subject.
Overhead view is fairly synonymous with bird's-eye view but tends to imply a vantage point of a lesser height than the latter term. For example, in computer and video games, an "overhead view" of a character or situation often places the vantage point only a few feet (a meter or two) above human height. See top–down perspective.
This composition is a bijective map of the points of S 2 onto itself which preserves collinear points and is called a perspective collineation (central collineation in more modern terminology). [7] Let φ be a perspective collineation of S 2. Each point of the line of intersection of S 2 and T 2 will be fixed by φ and this line is called the ...