Please use this identifier to cite or link to this item: http://hdl.handle.net/1822/61989

TitleContinuous zoom calibration by tracking salient points in endoscopic video
Author(s)Lourenço, Miguel
Barreto, João P.
Fonseca, Fernando
Ferreira, Hélder
Duarte, Rui M.
Correia-Pinto, Jorge
KeywordsAnatomic Landmarks
Animals
Calibration
Hysteroscopy
Image Enhancement
Microscopy, Video
Pattern Recognition, Automated
Phantoms, Imaging
Portugal
Reproducibility of Results
Sensitivity and Specificity
Swine
Video Recording
Issue date2014
PublisherSpringer
JournalLecture Notes in Computer Science
CitationLourenço, M., Barreto, J. P., Fonseca, F., Ferreira, H., Duarte, R. M., & Correia-Pinto, J. (2014, September). Continuous zoom calibration by tracking salient points in endoscopic video. In International Conference on Medical Image Computing and Computer-Assisted Intervention (pp. 456-463). Springer, Cham.
Abstract(s)Many image-based systems for aiding the surgeon during minimally invasive surgery require the endoscopic camera to be calibrated at all times. This article proposes a method for accomplishing this goal whenever the camera has optical zoom and the focal length changes during the procedure. Our solution for online calibration builds on recent developments in tracking salient points using differential image alignment, is well suited for continuous operation, and makes no assumptions about the camera motion or scene rigidity. Experimental validation using both a phantom model and in vivo data shows that the method enables accurate estimation of focal length when the zoom varies, avoiding the need to explicitly recalibrate during surgery. To the best of our knowledge this the first work proposing a practical solution for online zoom calibration in the operation room.
TypeConference paper
URIhttp://hdl.handle.net/1822/61989
ISBN978-3-319-10403-4
e-ISBN978-3-319-10404-1
DOI10.1007/978-3-319-10404-1_57
ISSN0302-9743
Publisher versionhttps://link.springer.com/chapter/10.1007/978-3-319-10404-1_57#citeas
Peer-Reviewedyes
AccessRestricted access (Author)
Appears in Collections:ICVS - Artigos em Revistas Internacionais com Referee

Files in This Item:
File Description SizeFormat 
10.1007@978-3-319-10404-157.pdf
  Restricted access
1,26 MBAdobe PDFView/Open

Partilhe no FacebookPartilhe no TwitterPartilhe no DeliciousPartilhe no LinkedInPartilhe no DiggAdicionar ao Google BookmarksPartilhe no MySpacePartilhe no Orkut
Exporte no formato BibTex mendeley Exporte no formato Endnote Adicione ao seu ORCID