Enforcing convexity for improved alignment with constrained local models

Y Wang, S Lucey, JF Cohn - 2008 IEEE Conference on …, 2008 - ieeexplore.ieee.org
Constrained local models (CLMs) have recently demonstrated good performance in non-
rigid object alignment/tracking in comparison to leading holistic approaches (eg, AAMs). A …

Fourier lucas-kanade algorithm

S Lucey, R Navarathna, AB Ashraf… - IEEE transactions on …, 2012 - ieeexplore.ieee.org
In this paper, we propose a framework for both gradient descent image and object alignment
in the Fourier domain. Our method centers upon the classical Lucas & Kanade (LK) …

Learning AAM fitting through simulation

J Saragih, R Göcke - Pattern Recognition, 2009 - Elsevier
The active appearance model (AAM) is a powerful method for modeling and segmenting
deformable visual objects. The utility of the AAM stems from two fronts: its compact …

Non-rigid face tracking with enforced convexity and local appearance consistency constraint

S Lucey, Y Wang, J Saragih, JF Cohn - Image and vision computing, 2010 - Elsevier
Convex quadratic fitting (CQF) has demonstrated great success recently in the task of non-
rigidly registering a face in a still image using a constrained local model (CLM). A CLM is a …

Efficient constrained local model fitting for non-rigid face alignment

S Lucey, Y Wang, M Cox, S Sridharan… - Image and vision …, 2009 - Elsevier
Active appearance models (AAMs) have demonstrated great utility when being employed for
non-rigid face alignment/tracking. The “simultaneous” algorithm for fitting an AAM achieves …

Robust facial feature tracking using shape-constrained multiresolution-selected linear predictors

EJ Ong, R Bowden - IEEE Transactions on Pattern Analysis …, 2010 - ieeexplore.ieee.org
This paper proposes a learned data-driven approach for accurate, real-time tracking of facial
features using only intensity information. The task of automatic facial feature tracking is …

Generative face alignment through 2.5 d active appearance models

P Martins, R Caseiro, J Batista - Computer Vision and Image …, 2013 - Elsevier
This work addresses the matching of a 3D deformable face model to 2D images through a
2.5 D Active Appearance Models (AAM). We propose a 2.5 D AAM that combines a 3D …

Fast image alignment in the Fourier domain

AB Ashraf, S Lucey, T Chen - 2010 IEEE Computer Society …, 2010 - ieeexplore.ieee.org
In this paper we propose a framework for gradient descent image alignment in the Fourier
domain. Specifically, we propose an extension to the classical Lucas & Kanade (LK) …

Hybrid approach for facial feature detection and tracking under occlusion

J Shin, D Kim - IEEE signal processing letters, 2014 - ieeexplore.ieee.org
When a face is partially occluded in an image, the existing discriminative or generative
methods often do not find facial features. This is due to the limitations of local facial feature …

Fourier active appearance models

R Navarathna, S Sridharan… - … Conference on Computer …, 2011 - ieeexplore.ieee.org
Gaining invariance to camera and illumination variations has been a well investigated topic
in Active Appearance Model (AAM) fitting literature. The major problem lies in the inability of …