Feature Based Stereo Matching Using Two-Step Expansion
Joint Authors
Wang, Liqiang
Liu, Zhen
Zhang, Zhonghua
Source
Mathematical Problems in Engineering
Issue
Vol. 2014, Issue 2014 (31 Dec. 2014), pp.1-14, 14 p.
Publisher
Hindawi Publishing Corporation
Publication Date
2014-12-18
Country of Publication
Egypt
No. of Pages
14
Main Subjects
Abstract EN
This paper proposes a novel method for stereo matching which is based on image features to produce a dense disparity map through two different expansion phases.
It can find denser point correspondences than those of the existing seed-growing algorithms, and it has a good performance in short and wide baseline situations.
This method supposes that all pixel coordinates in each image segment corresponding to a 3D surface separately satisfy projective geometry of 1D in horizontal axis.
Firstly, a state-of-the-art method of feature matching is used to obtain sparse support points and an image segmentation-based prior is employed to assist the first region outspread.
Secondly, the first-step expansion is to find more feature correspondences in the uniform region via initial support points, which is based on the invariant cross ratio in 1D projective transformation.
In order to find enough point correspondences, we use a regular seed-growing algorithm as the second-step expansion and produce a quasi-dense disparity map.
Finally, two different methods are used to obtain dense disparity map from quasi-dense pixel correspondences.
Experimental results show the effectiveness of our method.
American Psychological Association (APA)
Wang, Liqiang& Liu, Zhen& Zhang, Zhonghua. 2014. Feature Based Stereo Matching Using Two-Step Expansion. Mathematical Problems in Engineering،Vol. 2014, no. 2014, pp.1-14.
https://search.emarefa.net/detail/BIM-1044271
Modern Language Association (MLA)
Wang, Liqiang…[et al.]. Feature Based Stereo Matching Using Two-Step Expansion. Mathematical Problems in Engineering No. 2014 (2014), pp.1-14.
https://search.emarefa.net/detail/BIM-1044271
American Medical Association (AMA)
Wang, Liqiang& Liu, Zhen& Zhang, Zhonghua. Feature Based Stereo Matching Using Two-Step Expansion. Mathematical Problems in Engineering. 2014. Vol. 2014, no. 2014, pp.1-14.
https://search.emarefa.net/detail/BIM-1044271
Data Type
Journal Articles
Language
English
Notes
Includes bibliographical references
Record ID
BIM-1044271