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Definition
Projection transformation describes the transformation from a 3D scene to a 2D image.
Background
The actual projection transformation depends on the camera's projection model and is determined by the relationship between the center of projection (optical center) and the projection plane (image plane). If the center of projection is at a finite distance from the projection plane, it is a perspective transformation. If the center of projection is at infinity, the projection is parallel, known as an orthographic projection. There are several possible transformations between the two extremes, and the reader is referred to entry “▸ Affine Camera” for more information.
In computer graphics a projection transformation transforms three-dimensional eye coordinates into points in three-dimensional clip coordinates. Besides various types of projection as mentioned above, it...
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© 2014 Springer Science+Business Media New York
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Zhang, Z. (2014). Projection Transformation. In: Ikeuchi, K. (eds) Computer Vision. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-31439-6_118
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DOI: https://doi.org/10.1007/978-0-387-31439-6_118
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Publisher Name: Springer, Boston, MA
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Online ISBN: 978-0-387-31439-6
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