Authors
Michel Valstar, Brais Martinez, Xavier Binefa, Maja Pantic
Publication date
2010/6/13
Conference
2010 IEEE Computer Society Conference on Computer Vision and Pattern Recognition
Pages
2729-2736
Publisher
IEEE
Description
Finding fiducial facial points in any frame of a video showing rich naturalistic facial behaviour is an unsolved problem. Yet this is a crucial step for geometric-feature-based facial expression analysis, and methods that use appearance-based features extracted at fiducial facial point locations. In this paper we present a method based on a combination of Support Vector Regression and Markov Random Fields to drastically reduce the time needed to search for a point's location and increase the accuracy and robustness of the algorithm. Using Markov Random Fields allows us to constrain the search space by exploiting the constellations that facial points can form. The regressors on the other hand learn a mapping between the appearance of the area surrounding a point and the positions of these points, which makes detection of the points very fast and can make the algorithm robust to variations of appearance due to …
Total citations
20092010201120122013201420152016201720182019202020212022202320242314294560615930372421171333
Scholar articles
M Valstar, B Martinez, X Binefa, M Pantic - 2010 IEEE Computer Society Conference on Computer …, 2010