Salient and non-salient fiducial detection using a probabilistic graphical model

PATTERN RECOGNITION

卷:47

Article

Benitez-Quiroz, C. F.¹  Rivera, Samuel¹  Gotardo, Paulo F. U.¹  Martinez, Aleix M.¹ 

[1] Ohio State Univ, Computat Biol & Cognit Sci Lab, Columbus, OH 43210 USA

关键词: Shape modeling;    Detailed face shape detection;    Face detection;    Probabilistic graphical model;    Landmark detection;   

DOI  :  10.1016/j.patcog.2013.06.013

来源: Elsevier

【 摘 要 】

Deformable shape detection is an important problem in computer vision and pattern recognition. However, standard detectors are typically limited to locating only a few salient landmarks such as landmarks near edges or areas of high contrast, often conveying insufficient shape information. This paper presents a novel statistical pattern recognition approach to locate a dense set of salient and non-salient landmarks in images of a deformable object. We explore the fact that several object classes exhibit a homogeneous structure such that each landmark position provides some information about the position of the other landmarks. In our model, the relationship between all pairs of landmarks is naturally encoded as a probabilistic graph. Dense landmark detections are then obtained with a new sampling algorithm that, given a set of candidate detections, selects the most likely positions as to maximize the probability of the graph. Our experimental results demonstrate accurate, dense landmark detections within and across different databases. (C) 2013 Elsevier Ltd. All rights reserved.

【 授权许可】

Free