Stereo fusion: Combining refractive and binocular disparity

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The performance of depth reconstruction in binocular stereo relies on how adequate the predefined baseline for a target scene is. Wide-baseline stereo is capable of discriminating depth better than the narrow baseline stereo, but it often suffers from spatial artifacts. Narrow-baseline stereo can provide a more elaborate depth map with fewer artifacts, while its depth resolution tends to be biased or coarse due to the short disparity. In this paper, we propose a novel optical design of heterogeneous stereo fusion on a binocular imaging system with a refractive medium, where the binocular stereo part operates as wide baseline stereo, and the refractive stereo module works as narrow-baseline stereo. We then introduce a stereo fusion workflow that combines the refractive and binocular stereo algorithms to estimate fine depth information through this fusion design. In addition, we propose an efficient calibration method for refractive stereo. The quantitative and qualitative results validate the performance of our stereo fusion system in measuring depth in comparison with homogeneous stereo approaches. (C) 2016 Elsevier Inc. All rights reserved.
Publisher
ACADEMIC PRESS INC ELSEVIER SCIENCE
Issue Date
2016-05
Language
English
Article Type
Article; Proceedings Paper
Keywords

BASE-LINE STEREO; CAMERA; SYSTEM; SEARCH; SCALE; IMAGE; DEPTH

Citation

COMPUTER VISION AND IMAGE UNDERSTANDING, v.146, pp.52 - 66

ISSN
1077-3142
DOI
10.1016/j.cviu.2016.02.006
URI
http://hdl.handle.net/10203/209209
Appears in Collection
CS-Journal Papers(저널논문)
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