Focus mismatch detection in stereoscopic content

Frédéric Devernay 1 Sergi Pujades 1 Vijay Ch.A.V. 1
1 PRIMA - Perception, recognition and integration for observation of activity
Inria Grenoble - Rhône-Alpes, UJF - Université Joseph Fourier - Grenoble 1, INPG - Institut National Polytechnique de Grenoble , CNRS - Centre National de la Recherche Scientifique : UMR5217
Abstract : Live-action stereoscopic content production requires a stereo rig with two cameras precisely matched and aligned. While most deviations from this perfect setup can be corrected either live or in post-production, a difference in the focus distance or focus range between the two cameras will lead to unrecoverable degradations of the stereoscopic footage. In this paper we detect focus mismatch between views of a stereoscopic pair in four steps. First, we compute a dense disparity map. Then, we use a measure to compare focus in both images. After this, we use robust statistics to find which images zones have a different focus. Finally, to give useful feedback, we show the results on the original images and give hints on how to solve the focus mismatch.
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Conference papers
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https://hal.inria.fr/hal-00654115
Contributor : Frédéric Devernay <>
Submitted on : Tuesday, December 20, 2011 - 9:16:04 PM
Last modification on : Friday, June 1, 2018 - 1:02:02 PM
Long-term archiving on : Sunday, December 4, 2016 - 9:56:24 PM

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Frédéric Devernay, Sergi Pujades, Vijay Ch.A.V.. Focus mismatch detection in stereoscopic content. Stereoscopic Displays and Applications, Jan 2012, San Francisco, United States. ⟨hal-00654115v1⟩

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