Abstract
Calibration for calculating the external parameter of camera-projector system is important, to make high-precision 3-D measurement by 3-D endoscope using the grid active stereo. In this paper, we propose a new calibration method with a sphere calibration object in a geometrically flexible camera-projector system, and we examine the validity of the proposed method. As the result of comparing using conventional calibration with a plane calibration object, it is clarified that the proposed method resolves the scaling imprecision, that is a problem of the conventional method. Thus, the proposed method has higher potential of measurement accuracy. In addition, it is the advantage of the proposed method that precision estimation of calibration parameters with a low number of input images is possible.
| Original language | English |
|---|---|
| Pages (from-to) | 97-107 |
| Number of pages | 11 |
| Journal | Transactions of Japanese Society for Medical and Biological Engineering |
| Volume | 52 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Jan 1 2014 |
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All Science Journal Classification (ASJC) codes
- Biomedical Engineering
Cite this
Proposal of calibration method for 3-D digestive endoscope using grid active stereo. / Aoki, Hirooki; Furukawa, Ryo; Nishitani, Ishin; Aoyama, Masahito; Hiura, Shinsaku; Kominami, Yoko; Matsuo, Taiji; Yoshida, Shigeto; Tanaka, Shinji; Sagawa, Ryusuke; Kawasaki, Hiroshi.
In: Transactions of Japanese Society for Medical and Biological Engineering, Vol. 52, No. 2, 01.01.2014, p. 97-107.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Proposal of calibration method for 3-D digestive endoscope using grid active stereo
AU - Aoki, Hirooki
AU - Furukawa, Ryo
AU - Nishitani, Ishin
AU - Aoyama, Masahito
AU - Hiura, Shinsaku
AU - Kominami, Yoko
AU - Matsuo, Taiji
AU - Yoshida, Shigeto
AU - Tanaka, Shinji
AU - Sagawa, Ryusuke
AU - Kawasaki, Hiroshi
PY - 2014/1/1
Y1 - 2014/1/1
N2 - Calibration for calculating the external parameter of camera-projector system is important, to make high-precision 3-D measurement by 3-D endoscope using the grid active stereo. In this paper, we propose a new calibration method with a sphere calibration object in a geometrically flexible camera-projector system, and we examine the validity of the proposed method. As the result of comparing using conventional calibration with a plane calibration object, it is clarified that the proposed method resolves the scaling imprecision, that is a problem of the conventional method. Thus, the proposed method has higher potential of measurement accuracy. In addition, it is the advantage of the proposed method that precision estimation of calibration parameters with a low number of input images is possible.
AB - Calibration for calculating the external parameter of camera-projector system is important, to make high-precision 3-D measurement by 3-D endoscope using the grid active stereo. In this paper, we propose a new calibration method with a sphere calibration object in a geometrically flexible camera-projector system, and we examine the validity of the proposed method. As the result of comparing using conventional calibration with a plane calibration object, it is clarified that the proposed method resolves the scaling imprecision, that is a problem of the conventional method. Thus, the proposed method has higher potential of measurement accuracy. In addition, it is the advantage of the proposed method that precision estimation of calibration parameters with a low number of input images is possible.
UR - http://www.scopus.com/inward/record.url?scp=84940302288&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84940302288&partnerID=8YFLogxK
U2 - 10.11239/jsmbe.52.97
DO - 10.11239/jsmbe.52.97
M3 - Article
AN - SCOPUS:84940302288
VL - 52
SP - 97
EP - 107
JO - BME = Bio medical engineering / henshu, Nihon ME Gakkai
JF - BME = Bio medical engineering / henshu, Nihon ME Gakkai
SN - 1347-443X
IS - 2
ER -