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FGR
2011
IEEE
340views Biometrics» more  FGR 2011»
9 years 3 months ago
Action unit detection using sparse appearance descriptors in space-time video volumes
— Recently developed appearance descriptors offer the opportunity for efficient and robust facial expression recognition. In this paper we investigate the merits of the family o...
Bihan Jiang, Michel François Valstar, Maja ...
ICCV
1999
IEEE
11 years 1 months ago
Flexible Camera Calibration by Viewing a Plane from Unknown Orientations
We propose a flexible new technique to easily calibrate a camera. It only requires the camera to observe a planar pattern shown at a few (at least two) different orientations. Eit...
Zhengyou Zhang
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