2016
|
Konen, Wolfgang Illumination-invariant image mosaic calculation based on logarithmic search Forschungsbericht Research Center CIOP (Computational Intelligence, Optimization and Data Mining) Cologne University of Applied Science, 2016, (e-print published at http://arxiv.org/abs/1603.06433). Links | BibTeX @techreport{Kone16a,
title = {Illumination-invariant image mosaic calculation based on logarithmic search},
author = { Wolfgang Konen},
url = {http://arxiv.org/abs/1603.06433},
year = {2016},
date = {2016-03-01},
address = {Cologne University of Applied Science},
institution = {Research Center CIOP (Computational Intelligence, Optimization and Data Mining)},
note = {e-print published at http://arxiv.org/abs/1603.06433},
keywords = {},
pubstate = {published},
tppubtype = {techreport}
}
|
2014
|
Liebig, Kay N; Maslehaty, Homajoun; Petridis, Athanasios K; Konen, Wolfgang; Scholz, Martin Comparison of two algorithms for the application of real time image mosaicking in neuroendoscopy Artikel Journal of Neurosurgery, 121 (3), S. 688 – 699, 2014. Abstract | Links | BibTeX @article{Lieb14,
title = {Comparison of two algorithms for the application of real time image mosaicking in neuroendoscopy},
author = { Kay N. Liebig and Homajoun Maslehaty and Athanasios K. Petridis and Wolfgang Konen and Martin Scholz},
doi = {10.3171/2014.5.JNS121788},
year = {2014},
date = {2014-09-01},
journal = {Journal of Neurosurgery},
volume = {121},
number = {3},
pages = {688 -- 699},
abstract = {OBJECT:
Neuroendoscopy is used more and more frequently in neurosurgical procedures
and has become an important tool in the neurosurgical armamentarium.
However, the main restriction of neuroendoscopy is the limited field
of view. A better overview of the area of interest would increase
surgical safety and decrease procedure-related morbidity rates. In
the present study, the authors aimed to improve this restriction
by using and comparing two algorithms to create endoscopic panoramic
images, which increase the field of view during neuroendoscopic procedures.
METHODS:
Different endoscopic methods with or without a stand and with linear
or circular endoscope movements were performed in cadaveric ventricles.
Video of the endoscopy was used to create image mosaics of the lateral
ventricle with the help of the Kourogi or LogSearch (LS) algorithm.
In the LS algorithm, different template sizes were used. Three observers
graded the quality of the image mosaic in terms of usefulness in
surgery. The fastest frame rate was 3-4 frames/second.
RESULTS:
The LS algorithm with a larger template size showed significantly
better results for the creation of image mosaics than the Kourogi
algorithm in linear endoscopic movement with or without a stand.
In circular endoscopic movements, the results seemed to be better
with the LS algorithm but were not significantly different from those
obtained with the Kourogi algorithm. In summary, image quality in
the experimental paradigms was satisfying.
CONCLUSIONS:
Results in the study showed that the creation of image mosaics is
possible and reliable with the featured algorithms. Image mosaicking
is an applicable device for neuroendoscopy and can increase the field
of view during endoscopic procedures. Its use can increase the safety
and the field of application of neuroendoscopy. However, faster frame
rates will be required to create a smooth image for practical use
during surgery.},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
OBJECT:
Neuroendoscopy is used more and more frequently in neurosurgical procedures
and has become an important tool in the neurosurgical armamentarium.
However, the main restriction of neuroendoscopy is the limited field
of view. A better overview of the area of interest would increase
surgical safety and decrease procedure-related morbidity rates. In
the present study, the authors aimed to improve this restriction
by using and comparing two algorithms to create endoscopic panoramic
images, which increase the field of view during neuroendoscopic procedures.
METHODS:
Different endoscopic methods with or without a stand and with linear
or circular endoscope movements were performed in cadaveric ventricles.
Video of the endoscopy was used to create image mosaics of the lateral
ventricle with the help of the Kourogi or LogSearch (LS) algorithm.
In the LS algorithm, different template sizes were used. Three observers
graded the quality of the image mosaic in terms of usefulness in
surgery. The fastest frame rate was 3-4 frames/second.
RESULTS:
The LS algorithm with a larger template size showed significantly
better results for the creation of image mosaics than the Kourogi
algorithm in linear endoscopic movement with or without a stand.
In circular endoscopic movements, the results seemed to be better
with the LS algorithm but were not significantly different from those
obtained with the Kourogi algorithm. In summary, image quality in
the experimental paradigms was satisfying.
CONCLUSIONS:
Results in the study showed that the creation of image mosaics is
possible and reliable with the featured algorithms. Image mosaicking
is an applicable device for neuroendoscopy and can increase the field
of view during endoscopic procedures. Its use can increase the safety
and the field of application of neuroendoscopy. However, faster frame
rates will be required to create a smooth image for practical use
during surgery. |
2007
|
Konen, Wolfgang; Scholz, Martin; Tombrock, Stephan Robust registration procedures for endoscopic imaging Artikel Medical Image Analysis, 11 (6), S. 526-539, 2007. Links | BibTeX @article{KonSch07,
title = {Robust registration procedures for endoscopic imaging},
author = { Wolfgang Konen and Martin Scholz and Stephan Tombrock},
url = {http://www.gm.fh-koeln.de/~konen/Publikationen/KonenTombrockScholz2007-rev2.pdf},
doi = {10.1016/j.media.2007.04.006},
year = {2007},
date = {2007-12-01},
journal = {Medical Image Analysis},
volume = {11},
number = {6},
pages = {526-539},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Breiderhoff, Beate; Konen, Wolfgang; Scholz, Martin Ein automatisiertes Verfahren zum Image-Mosaicing bei endoskopischen Videoaufnahmen Forschungsbericht Cologne University of Applied Sciences 2007. Links | BibTeX @techreport{BreKon07,
title = {Ein automatisiertes Verfahren zum Image-Mosaicing bei endoskopischen Videoaufnahmen},
author = { Beate Breiderhoff and Wolfgang Konen and Martin Scholz},
url = {http://www.gm.fh-koeln.de/~konen/Publikationen/bvm2007_paper1_final.pdf},
year = {2007},
date = {2007-01-01},
institution = {Cologne University of Applied Sciences},
keywords = {},
pubstate = {published},
tppubtype = {techreport}
}
|
Konen, Wolfgang; Breiderhoff, Beate; Naderi, Martin Image Mosaicing in der medizinischen Endoskopie Forschungsbericht Cologne University of Applied Sciences 2007. Links | BibTeX @techreport{KonBre07a,
title = {Image Mosaicing in der medizinischen Endoskopie},
author = { Wolfgang Konen and Beate Breiderhoff and Martin Naderi},
url = {http://www.gm.fh-koeln.de/~konen/Publikationen/FBericht2007-Kg1.pdf},
year = {2007},
date = {2007-01-01},
institution = {Cologne University of Applied Sciences},
keywords = {},
pubstate = {published},
tppubtype = {techreport}
}
|
Konen, Wolfgang; Breiderhoff, Beate; Scholz, Martin Real-time image mosaic for endoscopic video sequences Konferenzbeitrag Horsch, Alexander ; ot, (Hrsg.): Bildverarbeitung für die Medizin (BVM2007, München), Springer-Verlag, Berlin, 2007. Links | BibTeX @inproceedings{KonBre07b,
title = {Real-time image mosaic for endoscopic video sequences},
author = { Wolfgang Konen and Beate Breiderhoff and Martin Scholz},
editor = {Horsch, Alexander and ot},
url = {http://www.gm.fh-koeln.de/~konen/Publikationen/bvm2007_paper2_final.pdf},
year = {2007},
date = {2007-01-01},
booktitle = {Bildverarbeitung für die Medizin (BVM2007, München)},
publisher = {Springer-Verlag, Berlin},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Konen, Wolfgang 3D-Navigation und Bildverarbeitung in der medizinischen Endoskopie Forschungsbericht Cologne University of Applied Sciences 2007. Links | BibTeX @techreport{Kone07b,
title = {3D-Navigation und Bildverarbeitung in der medizinischen Endoskopie},
author = { Wolfgang Konen},
url = {http://www.gm.fh-koeln.de/~konen/Publikationen/FBericht2007-Kg2.pdf},
year = {2007},
date = {2007-01-01},
institution = {Cologne University of Applied Sciences},
keywords = {},
pubstate = {published},
tppubtype = {techreport}
}
|
Konen, Wolfgang; Naderi, Martin; Scholz, Martin Endoscopic image mosaics for real-time color video sequences Konferenzbeitrag Lemke, H U (Hrsg.): Computer Assisted Radiology and Surgery (CARS2007, Berlin), Elsevier, Amsterdam, 2007. Links | BibTeX @inproceedings{KonNad07,
title = {Endoscopic image mosaics for real-time color video sequences},
author = { Wolfgang Konen and Martin Naderi and Martin Scholz},
editor = {Lemke, H.U.},
url = {http://www.gm.fh-koeln.de/~konen/Publikationen/CARS2007_EndoMosaic-paper.pdf},
year = {2007},
date = {2007-01-01},
booktitle = {Computer Assisted Radiology and Surgery (CARS2007, Berlin)},
publisher = {Elsevier, Amsterdam},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
2006
|
Konen, Wolfgang Optischer Fluss und Echtzeit-Videobearbeitung Forschungsbericht Cologne University of Applied Sciences 2006. Links | BibTeX @techreport{Kone06a,
title = {Optischer Fluss und Echtzeit-Videobearbeitung},
author = {Konen, Wolfgang},
url = {http://www.gm.fh-koeln.de/%7Ekonen/WPF-BV/TR-OpticalFlow-ImaMos.pdf},
year = {2006},
date = {2006-01-01},
institution = {Cologne University of Applied Sciences},
keywords = {},
pubstate = {published},
tppubtype = {techreport}
}
|
2005
|
Scholz, Martin ; Dick, S; Fricke, Britta ; Engelhardt, M; Tombrock, Stephan ; Pechlivanis, I; Harders, Albrecht ; Konen, Wolfgang Consideration of ergonomic aspects in the development of a new endoscopic navigation system Artikel British Journal of Neurosurgery, 19 (5), S. 402-408, 2005. BibTeX @article{SchDF05,
title = {Consideration of ergonomic aspects in the development of a new endoscopic navigation system},
author = {Scholz, Martin and Dick, S. and Fricke, Britta and Engelhardt, M. and Tombrock, Stephan and Pechlivanis, I. and Harders, Albrecht and Konen, Wolfgang},
year = {2005},
date = {2005-01-01},
journal = {British Journal of Neurosurgery},
volume = {19},
number = {5},
pages = {402-408},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Scholz, Martin ; Tombrock, Stephan ; Konen, Wolfgang ; Fricke, Britta ; others, Application of a newly developed visual navigation system in humans - first results Artikel Minimal Invasive Neurosurgery, 48 , S. 1-6, 2005. Links | BibTeX @article{SchTK05,
title = {Application of a newly developed visual navigation system in humans - first results},
author = {Scholz, Martin and Tombrock, Stephan and Konen, Wolfgang and Fricke, Britta and others},
url = {http://www.gm.fh-koeln.de/~konen/Publikationen/scholz-mins-2005.pdf},
year = {2005},
date = {2005-01-01},
journal = {Minimal Invasive Neurosurgery},
volume = {48},
pages = {1-6},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
2000
|
Scholz, Martin ; Fricke, Britta ; Tombrock, Stephan ; Hardenack, Markus ; Schmieder, Kirsten ; von Düring, Monika ; Konen, Wolfgang ; Harders, Albrecht Virtual image navigation: a new method to control intraoperative bleeding in neuroendoscopic surgery: Case Reports And Technical Notes Artikel Journal of Neurosurgery, 93 , S. 342-350, 2000. BibTeX @article{SchFT00a,
title = {Virtual image navigation: a new method to control intraoperative bleeding in neuroendoscopic surgery: Case Reports And Technical Notes},
author = {Scholz, Martin and Fricke, Britta and Tombrock, Stephan and Hardenack, Markus and Schmieder, Kirsten and von Düring, Monika and Konen, Wolfgang and Harders, Albrecht},
year = {2000},
date = {2000-01-01},
journal = {Journal of Neurosurgery},
volume = {93},
pages = {342-350},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Scholz, Martin ; Fricke, Britta ; Tombrock, Stephan ; Hardenack, Markus ; Schmieder, Kirsten ; von Düring, Monika ; Konen, Wolfgang ; Harders, Albrecht Virtual image navigation: a new method to control intraoperative bleeding in neuroendoscopic surgery Artikel Neurosurgical Focus, JNS Preview Article, 8 (6), S. 342-350, 2000. Links | BibTeX @article{SchFT00b,
title = {Virtual image navigation: a new method to control intraoperative bleeding in neuroendoscopic surgery},
author = {Scholz, Martin and Fricke, Britta and Tombrock, Stephan and Hardenack, Markus and Schmieder, Kirsten and von Düring, Monika and Konen, Wolfgang and Harders, Albrecht},
url = {http://www.gm.fh-koeln.de/~konen/Publikationen/JournNeurSurg2000.pdf},
year = {2000},
date = {2000-01-01},
journal = {Neurosurgical Focus, JNS Preview Article},
volume = {8},
number = {6},
pages = {342-350},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
1999
|
Scholz, Martin ; Hardenack, Markus ; Konen, Wolfgang ; Fricke, Britta ; von D"uring, Monika ; Heuser, Lothar ; Harders, Albrecht Navigation in neuroendoscopy Artikel Minimally Invasive Therapy & Allied Technologies, 8 (5), S. 309–316, 1999. BibTeX @article{SchHK999,
title = {Navigation in neuroendoscopy},
author = {Scholz, Martin and Hardenack, Markus and Konen, Wolfgang and Fricke, Britta and von D"uring, Monika and Heuser, Lothar and Harders, Albrecht},
year = {1999},
date = {1999-01-01},
journal = {Minimally Invasive Therapy & Allied Technologies},
volume = {8},
number = {5},
pages = {309--316},
publisher = {Informa UK Ltd UK},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
1998
|
Konen, Wolfgang ; Scholz, Martin ; Tombrock, Stephan The VN-project : Endoscopic image processing for neurosurgery Artikel Computer Aided Surgery, 3 (3), S. 144-148, 1998. Links | BibTeX @article{KonST98a,
title = {The VN-project : Endoscopic image processing for neurosurgery},
author = {Konen, Wolfgang and Scholz, Martin and Tombrock, Stephan},
url = {http://www.gm.fh-koeln.de/~konen/Publikationen/konen-CAS_Harder98.pdf},
year = {1998},
date = {1998-01-01},
journal = {Computer Aided Surgery},
volume = {3},
number = {3},
pages = {144-148},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Konen, Wolfgang ; Scholz, Martin ; Tombrock, Stephan Bildverarbeitung in der Neuroendoskopie Konferenzbeitrag 1. Bochumer Workshop : Bildgeführtes Operieren Quo vadis ? Perspektiven in der Neurochirurgie, 14.3.98, 1998. BibTeX @inproceedings{KonST98b,
title = {Bildverarbeitung in der Neuroendoskopie},
author = {Konen, Wolfgang and Scholz, Martin and Tombrock, Stephan},
year = {1998},
date = {1998-01-01},
booktitle = {1. Bochumer Workshop : Bildgeführtes Operieren Quo vadis ? Perspektiven in der Neurochirurgie, 14.3.98},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Scholz, Martin ; Konen, Wolfgang ; Tombrock, Stephan ; Fricke, Britta ; Adams, L; von Düring, Monika ; others, Development of an endoscopic navigation system based on digital image processing Artikel Computer Aided Surgery, 2 (6), S. 1-6, 1998. BibTeX @article{SchKT98e,
title = {Development of an endoscopic navigation system based on digital image processing},
author = {Scholz, Martin and Konen, Wolfgang and Tombrock, Stephan and Fricke, Britta and Adams, L. and von Düring, Monika and others},
year = {1998},
date = {1998-01-01},
journal = {Computer Aided Surgery},
volume = {2},
number = {6},
pages = {1-6},
keywords = {},
pubstate = {published},
tppubtype = {article}
}
|
Scholz, Martin ; Konen, Wolfgang ; Tombrock, Stephan ; Fricke, Britta ; von Düring, Monika ; Harders, Albrecht Das VN-Projekt : Entwicklung eines visuell geführten endoskopischen Navigationssystems Konferenzbeitrag 1. Bochumer Workshop : Bildgeführtes Operieren Quo vadis ? Perspektiven in der Neurochirurgie, 14.3.98, 1998. BibTeX @inproceedings{SchKT98a,
title = {Das VN-Projekt : Entwicklung eines visuell geführten endoskopischen Navigationssystems},
author = {Scholz, Martin and Konen, Wolfgang and Tombrock, Stephan and Fricke, Britta and von Düring, Monika and Harders, Albrecht},
year = {1998},
date = {1998-01-01},
booktitle = {1. Bochumer Workshop : Bildgeführtes Operieren Quo vadis ? Perspektiven in der Neurochirurgie, 14.3.98},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Scholz, Martin ; Konen, Wolfgang ; Tombrock, Stephan ; Hardenack, Markus ; Fricke, Britta ; von Düring, Monika ; Harders, Albrecht Development of a visual guided navigation system for neuroendoscopy Konferenzbeitrag 49. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie,13.6.98, 1998. BibTeX @inproceedings{SchKT98d,
title = {Development of a visual guided navigation system for neuroendoscopy},
author = {Scholz, Martin and Konen, Wolfgang and Tombrock, Stephan and Hardenack, Markus and Fricke, Britta and von Düring, Monika and Harders, Albrecht},
year = {1998},
date = {1998-01-01},
booktitle = {49. Jahrestagung der Deutschen Gesellschaft für Neurochirurgie,13.6.98},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Scholz, Martin ; Konen, Wolfgang ; Tombrock, Stephan ; Harders, Albrecht ; others, Digital image processing in neuroendoscopy : the development of a new navigation system Konferenzbeitrag 1. Congress of Endoscopic Assisted Microsurgery. Joint Meeting of the German and Japanese Societies of Neuroendoscopy. 10.6.98, Frankfurt., 1998. BibTeX @inproceedings{SchKT98b,
title = {Digital image processing in neuroendoscopy : the development of a new navigation system},
author = {Scholz, Martin and Konen, Wolfgang and Tombrock, Stephan and Harders, Albrecht and others},
year = {1998},
date = {1998-01-01},
booktitle = {1. Congress of Endoscopic Assisted Microsurgery. Joint Meeting of the German and Japanese Societies of Neuroendoscopy. 10.6.98, Frankfurt.},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Scholz, Martin ; Konen, Wolfgang ; Tombrock, Stephan ; Harders, Albrecht ; others, Digitale Bildverarbeitung in der endoskopischen Neurochirurgie Konferenzbeitrag Aachener Workshop "Navigierte Hirnchirurgie", 4.-5.9.1998, 1998. BibTeX @inproceedings{SchKT98c,
title = {Digitale Bildverarbeitung in der endoskopischen Neurochirurgie},
author = {Scholz, Martin and Konen, Wolfgang and Tombrock, Stephan and Harders, Albrecht and others},
year = {1998},
date = {1998-01-01},
booktitle = {Aachener Workshop "Navigierte Hirnchirurgie", 4.-5.9.1998},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Scholz, Martin ; Konen, Wolfgang ; Tombrock, Stephan ; Schwarz, Andreas ; Fricke, Britta ; von Düring, Monika ; Harders, Albrecht Computergestützte endoskopische Neuronavigation Konferenzbeitrag Fuzzy Neuroinitiative NRW, Neue Produkte und Anwendungen, S. 85-92, 1998. BibTeX @inproceedings{SchKT98f,
title = {Computergestützte endoskopische Neuronavigation},
author = {Scholz, Martin and Konen, Wolfgang and Tombrock, Stephan and Schwarz, Andreas and Fricke, Britta and von Düring, Monika and Harders, Albrecht},
year = {1998},
date = {1998-01-01},
booktitle = {Fuzzy Neuroinitiative NRW, Neue Produkte und Anwendungen},
pages = {85-92},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Scholz, Martin ; Neumann, D; Wildförster, Ulrich ; Fricke, Britta ; Konen, Wolfgang ; others, Variations of topographic anatomy at the floor of the third ventricle Konferenzbeitrag 1. Congress of Endoscopic Assisted Microsurgery. Joint Meeting of the German and Japanese Societies of Neuroendoscopy. 10.6.98, Frankfurt, 1998. BibTeX @inproceedings{SchNW98,
title = {Variations of topographic anatomy at the floor of the third ventricle},
author = {Scholz, Martin and Neumann, D. and Wildförster, Ulrich and Fricke, Britta and Konen, Wolfgang and others},
year = {1998},
date = {1998-01-01},
booktitle = {1. Congress of Endoscopic Assisted Microsurgery. Joint Meeting of the German and Japanese Societies of Neuroendoscopy. 10.6.98, Frankfurt},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
Scholz, Martin ; Tombrock, Stephan ; Fricke, Britta ; Wildförster, Ulrich ; Konen, Wolfgang ; von Düring, Monika ; Harders, Albrecht Computergestützte neuroendoskopische Koagulation: Blutstillung bei Bildverlust Konferenzbeitrag 5. Tag der Biomedizinischen Technik an der Ruhr-Universität Bochum, 1998. BibTeX @inproceedings{SchTF98,
title = {Computergestützte neuroendoskopische Koagulation: Blutstillung bei Bildverlust},
author = {Scholz, Martin and Tombrock, Stephan and Fricke, Britta and Wildförster, Ulrich and Konen, Wolfgang and von Düring, Monika and Harders, Albrecht},
year = {1998},
date = {1998-01-01},
booktitle = {5. Tag der Biomedizinischen Technik an der Ruhr-Universität Bochum},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
1997
|
Konen, Wolfgang ; Scholz, Martin ; Tombrock, Stephan ; Tölg, Sebastian ; Brauckmann, Michael ; Adams, Lukas An image-based navigation support system for neuroendoscopic surgery Konferenzbeitrag Symposium Bildverarbeitung, Technische Akademie Esslingen 1997. Links | BibTeX @inproceedings{KonST+97bv_ess,
title = {An image-based navigation support system for neuroendoscopic surgery},
author = {Konen, Wolfgang and Scholz, Martin and Tombrock, Stephan and Tölg, Sebastian and Brauckmann, Michael and Adams, Lukas},
url = {http://www.gm.fh-koeln.de/~konen/Publikationen/konen+bv_ess97.pdf},
year = {1997},
date = {1997-01-01},
booktitle = {Symposium Bildverarbeitung},
volume = {5},
organization = {Technische Akademie Esslingen},
keywords = {},
pubstate = {published},
tppubtype = {inproceedings}
}
|
