Three dimension reconstruction through measure-based image selection

Abstract

Three dimension (3D) reconstruction is one of the research focus of computer vision and widely applied in various fields. The main steps of 3D reconstruction include image acquisition, feature point extraction and matching, camera calibration and production of dense 3D scene models. Generally, not all the input images are useful for camera calibration because some images contain similar and redundant visual information. These images can even reduce the calibration accuracy. In this paper, we propose an effective image selection method to improve the accuracy of camera calibration. Then a new 3D reconstruction algorithm is proposed by adding the image selection step to 3D reconstruction. The image selection method uses structure-from-motion algorithm to estimate the position and attitude of each camera, first. Then the contributed value to 3D reconstruction of each image is calculated. Finally, images are selected according to the contributed value of each image and their effects on the contributed values of other images. Experimental results show that our image selection algorithm can improve the accuracy of camera calibration and the 3D reconstruction algorithm proposed in this paper can get better dense 3D models than the normal algorithm without image selection.

Keywords:

• 3D reconstruction
• Computer vision
• Camera calibration
• Image selection
• Structure-from-motion algorithms

Acknowledgements

Part of this paper has been presented at an international conference.³² This work is partly supported by Program for New Century Excellent Talents in Universities (NCET-13-0020), Fundamental Research Funds for the Central Universities (YWF-15-YHXY-022, YWF-14-YHXY-029, YWF-13-T-RSC-028), Innovation Foundation of AVIC and Beijing Key Laboratory of Digital Media, Beihang University.