Pinhole Camera Model

The pinhole camera model describes the mathematical relationship between the coordinates of a 3D point and its projection onto the image plane of an ideal pinhole camera, where the camera aperture is described as a point and no lenses are used to focus light. The model does not include, for example, geometric distortions or blurring of unfocused objects caused by lenses and finite sized apertures. It also does not take into account that most practical cameras have only discrete image coordinates. This means that the pinhole camera model can only be used as a first order approximation of the mapping from a 3D scene to a 2D image. Its validity depends on the quality of the camera and, in general, decreases from the center of the image to the edges as lens distortion effects increase.

Some of the effects that the pinhole camera model does not take into account can be compensated for, for example by applying suitable coordinate transformations on the image coordinates, and other effects are sufficiently small to be neglected if a high quality camera is used. This means that the pinhole camera model often can be used as a reasonable description of how a camera depicts a 3D scene, for example in computer vision and computer graphics.

Read more about Pinhole Camera ModelThe Geometry and Mathematics of The Pinhole Camera, Homogeneous Coordinates, See Also

Other articles related to "pinhole camera model, pinhole, camera, pinhole camera, model":

Pinhole Camera Model - See Also
... Entrance pupil, the equivalent location of the pinhole in relation to object space in a real camera ... Exit pupil, the equivalent location of the pinhole in relation to the image plane in a real camera ... Pinhole camera, the practical implementation of the mathematical model described in this article ...

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