Feature-based lucas-kanade and active appearance models.
File(s)antonakos2015feature.pdf (8.94 MB)
Accepted version
Author(s)
Antonakos, E
Alabort-I-Medina, J
Tzimiropoulos, G
Zafeiriou, SP
Type
Journal Article
Abstract
Lucas-Kanade and active appearance models are among the most commonly used methods for image alignment and facial fitting, respectively. They both utilize nonlinear gradient descent, which is usually applied on intensity values. In this paper, we propose the employment of highly descriptive, densely sampled image features for both problems. We show that the strategy of warping the multichannel dense feature image at each iteration is more beneficial than extracting features after warping the intensity image at each iteration. Motivated by this observation, we demonstrate robust and accurate alignment and fitting performance using a variety of powerful feature descriptors. Especially with the employment of histograms of oriented gradient and scale-invariant feature transform features, our method significantly outperforms the current state-of-the-art results on in-the-wild databases.
Date Issued
2015-05-08
Date Acceptance
2015-05-08
Citation
IEEE Transactions on Image Processing, 2015, 24 (9), pp.2617-2632
ISSN
1057-7149
Publisher
Institute of Electrical and Electronics Engineers (IEEE)
Start Page
2617
End Page
2632
Journal / Book Title
IEEE Transactions on Image Processing
Volume
24
Issue
9
Copyright Statement
© 2015 IEEE. Personal use of this material is permitted. Permission from IEEE must be obtained for all other uses, in any current or future media, including reprinting/republishing this material for advertising or promotional purposes, creating new collective works, for resale or redistribution to servers or lists, or reuse of any copyrighted component of this work in other works.
Publication Status
Published