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Computer Vision pp 89–94Cite as

Center of Projection

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Synonyms

Optical center; Single viewpoint

Related Concepts

Field of View

Definition

Center of projection is a single 3D point in space where all the light rays sampled by a conventional pinhole camera intersect.

Background

Albrecht Dürer, a German artist, published a treatise on measurement using a series of illustrations of drawing frames and perspective machines. On the left side of Fig. 1, an apparatus for drawing a lute is shown. One end of a thread is attached to a pointer and the other end to a pulley on a wall. The thread also passes through a frame in between the lute and the pulley. When the pointer is fixed at different points on the lute, the vertical and horizontal coordinates of the thread, as it passes through the frame, are marked. By meticulously marking the coordinates for each point on the lute, the perspective image of the lute is created. It is obvious to see the intuition behind this setup, i.e., its similarity to a pinhole camera. The pulley is equivalent to the...

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Author information

Authors and Affiliations

  1. Mitsubishi Electric Research Laboratories, Cambridge, MA, USA

    Srikumar Ramalingam

Authors
  1. Srikumar Ramalingam
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Editor information

Editors and Affiliations

  1. Institute of Industrial Science, The University of Tokyo, Tokyo, Japan

    Katsushi Ikeuchi

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© 2014 Springer Science+Business Media New York

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Ramalingam, S. (2014). Center of Projection. In: Ikeuchi, K. (eds) Computer Vision. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-31439-6_458

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