Please use this identifier to cite or link to this item: https://doi.org/10.1016/j.cviu.2010.08.004
Title: Behaviour of SFM algorithms with erroneous calibration
Authors: Cheong, L.-F. 
Xiang, X.
Keywords: Camera calibration
Error analysis
Motion analysis
Issue Date: Jan-2011
Source: Cheong, L.-F., Xiang, X. (2011-01). Behaviour of SFM algorithms with erroneous calibration. Computer Vision and Image Understanding 115 (1) : 16-30. ScholarBank@NUS Repository. https://doi.org/10.1016/j.cviu.2010.08.004
Abstract: This paper presents an algorithm-independent geometrical analysis of the behavior of differential Structure from Motion (SFM) algorithms when there are errors in intrinsic parameters of the camera. We demonstrate both analytically and in simulation how uncertainty in the calibration parameters gets propagated to motion estimates in a differential setting. In particular, we studied how erroneous focal length and principal point estimates affect the behavior of the bas-relief ambiguity and introduce additional biasing to the translation estimate in a non-simple manner not revealed by previous analyses. Our formulation allows us to characterize the influence of various factors such as different scene-motion configurations and field of views in an analytically tractable manner. Guidelines are given as to whether one should err on the low or the high side in the estimation of the focal length depending on various operating conditions such as the feature density and the noise level. Simulations with synthetic data and real images were conducted to support our findings. © 2010 Published by Elsevier Inc.
Source Title: Computer Vision and Image Understanding
URI: http://scholarbank.nus.edu.sg/handle/10635/55195
ISSN: 10773142
DOI: 10.1016/j.cviu.2010.08.004
Appears in Collections:Staff Publications

Show full item record
Files in This Item:
There are no files associated with this item.

Page view(s)

40
checked on Dec 11, 2017

Google ScholarTM

Check

Altmetric


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.