Title:
ENDOSCOPE SYSTEM
Document Type and Number:
WIPO Patent Application WO/2018/229831
Kind Code:
A1
Abstract:
This endoscope system (1) is provided with: a lighting unit (4) for illuminating a subject (A) with illumination light (L) having an intensity distribution that is spatially non-uniform and includes a bright portion and a dark portion in a luminous flux cross-section perpendicular to the optical axis; an imaging unit (6) which acquires an illuminated image of the subject (A) illuminated with the illumination light (L); and a separation processing unit (7) which produces two separated images from the illuminated image. The separation processing unit (7) produces the two separated images on the basis of at least two intensity values among pixel intensity values in the illuminated image, wherein the pixel intensity values respectively correspond to a bright portion, a dark portion, and a portion having an intensity between those of the bright portion and the dark portion.
Inventors:
SHINJI SHO (JP)
MATSUMOTO KOJI (JP)
OKA TETSUHIRO (JP)
URUSHIBATA KENJI (JP)
KUBO HIROYUKI (JP)
MATSUMOTO KOJI (JP)
OKA TETSUHIRO (JP)
URUSHIBATA KENJI (JP)
KUBO HIROYUKI (JP)
Application Number:
PCT/JP2017/021661
Publication Date:
December 20, 2018
Filing Date:
June 12, 2017
Export Citation:
Assignee:
OLYMPUS CORP (JP)
International Classes:
A61B1/045
Domestic Patent References:
| WO2011081141A1 | 2011-07-07 |
Foreign References:
| JP2016209466A | 2016-12-15 | |||
| JP2016049370A | 2016-04-11 |
Other References:
NAYAR K. SHREE ET AL: "Fast separation of direct and global components of a scene using high frequency illumination", ACM TRANSACTIONS ON GRAPHICS (TOG), vol. 25, no. 3, 1 July 2006 (2006-07-01), pages 935 - 944, XP058328192, DOI: 10.1145/1141911.1141977
KEN'ICHIRO TANAKA ET AL.: "Heiko koshuha shomei ni okeru shuhasu no tekioteki sentaku", INFORMATION PROCESSING SOCIETY OF JAPAN MIRU2013 EXTENDED ABSTRACT, no. ss2-33, 22 July 2013 (2013-07-22)
TSUYOSHI TAKATANI ET AL.: "Decomposition of reflected and scattered lights by multiple weighted measurements", IPSJ SIG NOTES (CD-ROM) ROMBUNNO CVIM-177 (NO.12), vol. 2011, no. 1, 15 June 2011 (2011-06-15), pages 3 - 5, ISSN: 2186-2583
KEN'ICHIRO TANAKA ET AL.: "Heiko koshuha shomei ni okeru shuhasu no tekioteki sentaku", INFORMATION PROCESSING SOCIETY OF JAPAN MIRU2013 EXTENDED ABSTRACT, no. ss2-33, 22 July 2013 (2013-07-22)
TSUYOSHI TAKATANI ET AL.: "Decomposition of reflected and scattered lights by multiple weighted measurements", IPSJ SIG NOTES (CD-ROM) ROMBUNNO CVIM-177 (NO.12), vol. 2011, no. 1, 15 June 2011 (2011-06-15), pages 3 - 5, ISSN: 2186-2583
Attorney, Agent or Firm:
UEDA, Kunio et al. (JP)
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