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Appl. Sci. 2017, 7(5), 446; doi:10.3390/app7050446

A Multi-View Stereo Algorithm Based on Homogeneous Direct Spatial Expansion with Improved Reconstruction Accuracy and Completeness

1,2
and
1,*
1
College of Physical Science and Technology, Central China Normal University, Wuhan 430079, China
2
School of Electronic Information and Electrical Engineering, Xiangnan University, Chenzhou 423000, China
*
Author to whom correspondence should be addressed.
Academic Editor: Lorenzo J. Tardón
Received: 12 February 2017 / Revised: 14 April 2017 / Accepted: 21 April 2017 / Published: 29 April 2017
View Full-Text   |   Download PDF [6133 KB, uploaded 29 April 2017]   |  

Abstract

Reconstruction of 3D structures from multiple 2D images has wide applications in such fields as computer vision, cultural heritage preservation, etc. This paper presents a novel multi-view stereo algorithm based on homogeneous direct spatial expansion (MVS-HDSE) with high reconstruction accuracy and completeness. It adopts many unique measures in each step of reconstruction, including initial seed point extraction using the DAISY descriptor to increase the number of initial sparse seed points, homogeneous direct spatial expansion to enhance efficiency, initial value modification via a conditional-double-surface-fitting method before optimization and adaptive consistency filtering after optimization to ensure high accuracy, processing using a multi-level image pyramid to further improve completeness and efficiency, etc. As demonstrated by experiments, owing to above measures the proposed algorithm attained much improved reconstruction completeness and accuracy. View Full-Text
Keywords: multi-view stereo reconstruction; DAISY descriptor; feature expansion; double quadratic surface fitting multi-view stereo reconstruction; DAISY descriptor; feature expansion; double quadratic surface fitting
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Li, Y.; Li, Z. A Multi-View Stereo Algorithm Based on Homogeneous Direct Spatial Expansion with Improved Reconstruction Accuracy and Completeness. Appl. Sci. 2017, 7, 446.

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