Temporal non-local-means filtering in hybrid 3D endoscopy

Tobias Lindenberger, Sven Haase, Jakob Wasza, Thomas Kilgus, Lena Maier-Hein, Hubertus Feußner, Joachim Hornegger

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Time-of-Flight (ToF) cameras are a novel and fast developing technology for acquiring 3D surfaces. In recent years they have gathered interest from many fields including 3D endoscopy. However, preprossessing of the obtained images is absolutely mandatory due to the low signal-to-noise ratio of current sensors. One possibility to increase image quality is the non-local-means (NLM) filter that utilizes local neighborhoods for denoising. In this paper we present an enhanced NLM filter for hybrid 3D endoscopy. The introduced filter gathers the structural information from an RGB image that shows the same scene as the range image. To cope with camera movements, we incorporate a temporal component by considering a sequence of frames. Evaluated on simulated data, the algorithm showed an improvement in range accuracy of 70% when compared to the unfiltered image.

Original languageEnglish
Title of host publicationBildverarbeitung fur die Medizin 2014
Subtitle of host publicationAlgorithmen - Systeme - Anwendungen, Proceedings des Workshops
EditorsHans-Peter Meinzer, Heinz Handels, Thomas Martin Deserno, Thomas Tolxdorff
PublisherKluwer Academic Publishers
Pages90-95
Number of pages6
ISBN (Electronic)9783642541100
DOIs
StatePublished - 2014
EventWorkshops Bildverarbeitung fur die Medizin: Algorithmen - Systeme - Anwendungen, BVM 2014 - Workshop on Image Processing for Medicine: Algorithms - Systems - Applications, BVM 2014 - Aachen, Germany
Duration: 16 Mar 201418 Mar 2014

Publication series

NameInformatik aktuell
ISSN (Print)1431-472X

Conference

ConferenceWorkshops Bildverarbeitung fur die Medizin: Algorithmen - Systeme - Anwendungen, BVM 2014 - Workshop on Image Processing for Medicine: Algorithms - Systems - Applications, BVM 2014
Country/TerritoryGermany
CityAachen
Period16/03/1418/03/14

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