Title:
ENDOSCOPE SYSTEM, PROCESSOR DEVICE FOR ENDOSCOPE SYSTEM, AND IMAGE PROCESSING METHOD
Document Type and Number:
WIPO Patent Application WO/2013/111623
Kind Code:
A1
Abstract:
In the present invention, a plurality of types of blood vessels at different depths can be reliably distinguished even if the ratio between a blue component of illuminating light and a green component of said illuminating light has changed. A subject is simultaneously exposed to white light (BB) and narrowband blue light (BN). The ratio between the intensity of the white light (BB) and the narrowband blue light (BN) is set by an intensity-ratio setting unit (37a). The subject is imaged using a color CCD (44), yielding a blue signal (B), a green signal (G), and a red signal (R). A base image is generated from said signals (B, G, and R), and a B/G image is generated from the B/G ratio, i.e. the ratio of the blue signal (B) to the green signal (G). Pixels representing B/G ratios less than or equal to a mucous-membrane/superficial-blood-vessel boundary value (Ls) are extracted from the B/G image, yielding an image containing extracted superficial blood vessels, and pixels representing B/G ratios greater than or equal to a mucous-membrane/mid-depth-blood-vessel boundary value (Ld) are extracted, yielding an image containing extracted mid-depth blood vessels. Said boundary values (Ls and Ld) differ depending on the intensity ratio set by the intensity-ratio setting unit (37a).
Inventors:
KAKU TOSHIHIKO (JP)
IIDA TAKAYUKI (JP)
IIDA TAKAYUKI (JP)
Application Number:
PCT/JP2013/050361
Publication Date:
August 01, 2013
Filing Date:
January 11, 2013
Export Citation:
Assignee:
FUJIFILM CORP (JP)
International Classes:
A61B1/04; A61B1/00; A61B1/06
Domestic Patent References:
| WO2010143692A1 | 2010-12-16 |
Foreign References:
| JP2011036361A | 2011-02-24 | |||
| JP2011010998A | 2011-01-20 | |||
| JP2010094152A | 2010-04-30 | |||
| JP2002095635A | 2002-04-02 | |||
| JP2011218135A | 2011-11-04 | |||
| JP2011135983A | 2011-07-14 |
Other References:
See also references of EP 2807973A4
Attorney, Agent or Firm:
ODAHARA Shuichi et al. (JP)
Shuichi Odawara (JP)
Shuichi Odawara (JP)
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Claims: