Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/6124
Title: A simplified two-view geometry based external calibration method for omnidirectional and PTZ camera pairs
Authors: Baştanlar, Yalın
Baştanlar, Yalın
Izmir Institute of Technology. Computer Engineering
Keywords: External calibration
Hybrid camera system
Omnidirectional cameras
Pan-tilt-zoom camera
Issue Date: 1-Feb-2016
Publisher: Elsevier Ltd.
Source: Baştanlar, Y. (2016). A simplified two-view geometry based external calibration method for omnidirectional and PTZ camera pairs. Pattern Recognition Letters, 71, 1-7. doi:10.1016/j.patrec.2015.11.013
Abstract: The external calibration of a camera system is essential for most of the applications that involve an omnidirectional and a pan-tilt-zoom (PTZ) camera. The methods in the literature fall into two major categories; (1) a complete external calibration of the system which allows all degrees of freedom but highly time consuming, (2) spatial mapping between the pixel coordinates in omnidirectional camera and pan/tilt angles of the PTZ camera instead of explicitly computing the rotation and translation. Most methods in this category make restrictive assumptions about the camera setup such as optical axes of the cameras coincide. We propose an external calibration method that is effective and practical. Using the two-view geometry principles and making reasonable assumptions about the camera setup, calibration is performed with just two scene points. We extract rotation using the point correspondences in images. Locating the PTZ camera in the omnidirectional image is used to find the translation parameters and the real distance between the two scene points lets us compute the translation in correct scale. Results of the simulated and real image experiments show that our method works effectively in real world cases and its accuracy is comparable to the state-of-the-art methods.
URI: http://doi.org/10.1016/j.patrec.2015.11.013
http://hdl.handle.net/11147/6124
ISSN: 0167-8655
Appears in Collections:Computer Engineering / Bilgisayar Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

Files in This Item:
File Description SizeFormat 
6124.pdfMakale1.25 MBAdobe PDFThumbnail
View/Open
Show full item record

CORE Recommender

SCOPUSTM   
Citations

8
checked on Sep 18, 2021

WEB OF SCIENCETM
Citations

9
checked on Sep 18, 2021

Page view(s)

38
checked on Sep 20, 2021

Download(s)

20
checked on Sep 20, 2021

Google ScholarTM

Check

Altmetric


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