NDLI: 2-DOF auto-calibration for a 3D endoscope system based on active stereo

Content Provider	IEEE Xplore Digital Library
Author	Furukawa, R. Masutani, R. Miyazaki, D. Baba, M. Hiura, S. Visentini-Scarzanella, M. Morinaga, H. Kawasaki, H. Sagawa, R.
Copyright Year	2015
Description	Author affiliation: Fac. of Inf. Sci., Hiroshima City Univ., Hiroshima, Japan (Furukawa, R.; Masutani, R.; Miyazaki, D.; Baba, M.; Hiura, S.) \|\| Natinal Inst. of Adv. Ind. Sci. & Technol., Tsukuba, Japan (Sagawa, R.) \|\| Fac. of Eng., Kagoshima Univ., Kagoshima, Japan (Visentini-Scarzanella, M.; Morinaga, H.; Kawasaki, H.)
Abstract	For endoscopic medical treatment, measuring the size and shape of lesions, such as tumors, is important. We are developing a 3D endoscope system to measure the shape and size of living tissues based on active stereo. In previous works, our group attached a pattern projector outside the endoscope head. Since this increased the diameter of the endoscope, the burden and the risks of the patients would increase. In this paper, we set the pattern projector inside the instrument channel of the endoscope instead of mounting it outside, so that it can be deployed whenever required. This does not increase the size of the endoscope and facilitates the measuring process. However, since the projector is not physically fixed to the endoscope anymore prior to the operation, we propose an “auto-calibration” technique where extrinsic parameters are calibrated intra-operatively from a point marker on the projector observed simultaneously on the target surface. In the experiment, we show that the external parameters were successfully calibrated to obtain 3D reconstructions properly with the overall systems. The accuracy of the auto-calibration was validated by confirming that the epipolar constraints were kept, and a 3D reconstruction of a human tissue was demonstrated.
Starting Page	7937
Ending Page	7941
File Size	1368415
Page Count	5
File Format	PDF
ISSN	1557170X
e-ISBN	9781424492718
DOI	10.1109/EMBC.2015.7320233
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2015-08-25
Publisher Place	Italy
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Endoscopes Three-dimensional displays Calibration Cameras Instruments Shape Image reconstruction
Content Type	Text
Resource Type	Article
Subject	Signal Processing Biomedical Engineering Health Informatics Computer Vision and Pattern Recognition

Sl.	Authority	Responsibilities	Communication Details
1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
3	National Digital Library of India Office, Indian Institute of Technology Kharagpur	The administrative and infrastructural headquarters of the project	Dr. B. Sutradhar bsutra@ndl.gov.in
4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
5	Website/Portal (Helpdesk)	Queries regarding NDLI and its services	support@ndl.gov.in
6	Contents and Copyright Issues	Queries related to content curation and copyright issues	content@ndl.gov.in
7	National Digital Library of India Club (NDLI Club)	Queries related to NDLI Club formation, support, user awareness program, seminar/symposium, collaboration, social media, promotion, and outreach	clubsupport@ndl.gov.in
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9	IDR Setup or Support	Queries related to establishment and support of Institutional Digital Repository (IDR) and IDR workshops	idr@ndl.gov.in

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