# parallel projection

## parallel projection

[¦par·ə‚lel prə′jek·shən]
(mathematics)
A central projection in which the center of projection is the point at infinity, so that the projectors are parallel; equivalent to an orthogonal projection.
References in periodicals archive ?
Images collected by the electron microscope can be understood as the parallel projection of the Coulomb potential of the macromolecule being imaged.
IUSEM, A parallel projection method for finding a common point of a family of convex sets, Pesquisa Operacional, 5 (1985), pp.
This flatness can be observed particularly in the shrine at the bottom of the image as it has been illustrated completely in orthographic projection, that is, only one side of the structure is projected onto the picture plane in parallel projection. This parallel projection means there is no depth distortion and creates a flat image.
measurement along axes) projection is a method of projective geometry where objects are projected using parallel projection onto the image plane.
The operation of estimation of the area of a surface by the grid of parallel straight lines can be decomposed into parallel projection to the plane perpendicular to the lines, and estimation of the total projection area by a point lattice.
It has design tools such as raster-to-vector, dynamic text features, parametric 3D-relief modeler, texturing in 2D and 3D, parallel projection, 3D wrapping about part, and 3D rendering.
Some higher-end projectors have lens-shifting ability that allows the two images to be perfectly aligned while maintaining parallel projection. Another possibility for projectors with built-in keystone adjustment is to align the projection centres of the two images and then use the vertical keystone adjustment to align the edges of the images.
We manipulated the GFOV of a stereoscopic display between the nonperspective case (parallel projection: 0[degrees] GFOV) and a GFOV of 100[degrees] while maintaining a constant FOV.
But what that observer had not looked at was the extraordinary parallel projection of energy and money into an attempt to re-animate the whole of the United Kingdom.
is not very fast" and thus proposes the "extrap olated parallel projection method" (E.P.P.M.) [33, p.
From the very start, Alberti had recommended that designers avoid perspective and use instead a kind of nonforeshortened, scaled drawing-- similar to what today we would call plans, elevations, and side views in parallel projections. (11) When drawn in this way, all lines parallel to one another are in the same scale--a major advantage for technical and construction drawings.
of Texas-San Antonio) and Merughan Grigoryan, a physicist currently engaged in private research, present results of their research in digital image reconstruction, using the case of the two-dimensional image and the parallel projections. Their model entails an object or image to be analyzed being held immobile, while on both sides, the X-ray set and detectors are disposed and revolved around the object at different angles.

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