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The refocusing distance of a standard plenoptic photograph

Research Output: Chapter in Book/Report/Conference proceeding Conference contribution Peer-review

Open access

Abstract

In the past years, the plenoptic camera aroused an increasing interest in the field of computer vision. Its capability of capturing three-dimensional image data is achieved by an array of micro lenses placed in front of a traditional image sensor. The acquired light field data allows for the reconstruction of photographs focused at different depths. Given the plenoptic camera parameters, the metric distance of refocused objects may be retrieved with the aid of geometric ray tracing. Until now there was a lack of experimental results using real image data to prove this conceptual solution. With this paper, the very first experimental work is presented on the basis of a new ray tracing model approach, which considers more accurate micro image centre positions. To evaluate the developed method, the blur metric of objects in a refocused image stack is measured and compared with proposed predictions. The results suggest quite an accurate approximation for distant objects and deviations for objects closer to the camera device.

Publication Information

Output type

Research Output: Chapter in Book/Report/Conference proceeding Conference contribution Peer-review

Original language

English

Publication milestones

  • Published - 12/06/2015

Publication status

Published - 12/06/2015

Publisher

Institute of Electrical and Electronics Engineers Inc., United States

ISBN (Print)

9781467380904

External Publication IDs

  • handle.net: 10547/556972
  • Scopus: 84954095519

Host publication title

2015 3DTV-Conference: The True Vision - Capture, Transmission and Display of 3D Video (3DTV-CON)

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