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Proceedings Paper

Capturing the plenoptic function in a swipe
Author(s): Michael Lawson; Mike Brookes; Pier Luigi Dragotti
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Paper Abstract

Blur in images, caused by camera motion, is typically thought of as a problem. The approach described in this paper shows instead that it is possible to use the blur caused by the integration of light rays at different positions along a moving camera trajectory to extract information about the light rays present within the scene. Retrieving the light rays of a scene from different viewpoints is equivalent to retrieving the plenoptic function of the scene. In this paper, we focus on a specific case in which the blurred image of a scene, containing a flat plane with a texture signal that is a sum of sine waves, is analysed to recreate the plenoptic function. The image is captured by a single lens camera with shutter open, moving in a straight line between two points, resulting in a swiped image. It is shown that finite rate of innovation sampling theory can be used to recover the scene geometry and therefore the epipolar plane image from the single swiped image. This epipolar plane image can be used to generate unblurred images for a given camera location.

Paper Details

Date Published: 27 September 2016
PDF: 8 pages
Proc. SPIE 9971, Applications of Digital Image Processing XXXIX, 99710O (27 September 2016); doi: 10.1117/12.2236981
Show Author Affiliations
Michael Lawson, Imperial College London (United Kingdom)
Mike Brookes, Imperial College London (United Kingdom)
Pier Luigi Dragotti, Imperial College London (United Kingdom)

Published in SPIE Proceedings Vol. 9971:
Applications of Digital Image Processing XXXIX
Andrew G. Tescher, Editor(s)

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