| Abstract
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<p>We propose an algorithm for detec … <p>We propose an algorithm for detecting the mouth events of opening and closing. Our method is translation and ro- tation invariant, works at very fast speeds, and does not re- quire segmented lips. The approach is based on a recently developed optical flow algorithm that handles the motion of linear structure in a stable and consistent way.Furthermore, we provide a semi-automatic tool for gen- erating groundtruth segmentation of video data, also based on the optical flow algorithm used for tracking keypoints at faster than 200 frames/second. We provide groundtruth for 50 sessions of speech of the XM2VTS database (16) avail- able for download, and the means to segment further ses- sions at a relatively small amount of user interaction.We use the generated groundtruth to test the proposed al- gorithm for detecting events, and show it to yield promising result. The semi-automatic tool will be a useful resource for researchers in need of groundtruth segmentation from video for the XM2VTS database and others.</p> the XM2VTS database and others.</p>
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| Author
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Stefan Karlsson +
, Josef Bigun +
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| Conference
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2012 IEEE Computer Society Conference on Computer Vision and Pattern Recognition Workshops, CVPRW 2012, 16-21 June, 2012, Rhode Island, USA
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| DOI
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http://dx.doi.org/10.1109/CVPRW.2012.6239228 +
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| Diva
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http://hh.diva-portal.org/smash/record.jsf?searchId=1&pid=diva2:552889
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| EndPage
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145 +
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| PublicationType
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Conference Paper +
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| Publisher
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IEEE Press +
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| Series
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IEEE Computer Society Conference on Computer Vision and Pattern Recognition workshops. Proceedings +
|
| StartPage
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138 +
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| Title
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Lip-motion events analysis and lip segmentation using optical flow +
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| Year
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2012 +
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| Has queryThis property is a special property in this wiki.
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Publications:Lip-motion events analysis and lip segmentation using optical flow +
, Publications:Lip-motion events analysis and lip segmentation using optical flow +
, Publications:Lip-motion events analysis and lip segmentation using optical flow +
, Publications:Lip-motion events analysis and lip segmentation using optical flow +
, Publications:Lip-motion events analysis and lip segmentation using optical flow +
, Publications:Lip-motion events analysis and lip segmentation using optical flow +
, Publications:Lip-motion events analysis and lip segmentation using optical flow +
, Publications:Lip-motion events analysis and lip segmentation using optical flow +
, Publications:Lip-motion events analysis and lip segmentation using optical flow +
, Publications:Lip-motion events analysis and lip segmentation using optical flow +
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| Categories |
Publication +
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| Modification dateThis property is a special property in this wiki.
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30 September 2016 20:07:13 +
|
