Title:
LIVING BODY OBSERVATION EQUIPMENT
Document Type and Number:
WIPO Patent Application WO/2007/099681
Kind Code:
A1
Abstract:
White light from a lamp (11) is turned into a wideband frame sequential illumination light of R, G or B through the R, G, B filters of a rotary filter (14), and the mucous membrane of a living body in a body cavity is irradiated with the illumination light through an electronic endoscope (2), and imaged sequentially by a CCD (25). Output signal from the CCD (25) is switched sequentially by a selector in a filter circuit (36) and separated into a signal component corresponding to the spatial frequency component of the structure of a mucous membrane of a living body by slew for the R signal, BPF for the G signal and HPF for the B signal. Image signal of an image for making the structure of a mucous membrane of a living body identifiable easily is generated by the separation.
Inventors:
YAMAZAKI KENJI (JP)
GONO KAZUHIRO
GONO KAZUHIRO
Application Number:
PCT/JP2006/324681
Publication Date:
September 07, 2007
Filing Date:
December 11, 2006
Export Citation:
Assignee:
OLYMPUS MEDICAL SYSTEMS CORP (JP)
YAMAZAKI KENJI (JP)
GONO KAZUHIRO
YAMAZAKI KENJI (JP)
GONO KAZUHIRO
International Classes:
A61B1/00; A61B1/04; G06T1/00; G06T5/20; H04N9/04
Foreign References:
| JP2004202217A | 2004-07-22 | |||
| JP2003093336A | 2003-04-02 | |||
| JP2002034893A | 2002-02-05 | |||
| JP2002034908A | 2002-02-05 | |||
| JP2000148987A | 2000-05-30 | |||
| JPH08313823A | 1996-11-29 | |||
| JPH03105483A | 1991-05-02 | |||
| JP2005141659A | 2005-06-02 | |||
| EP1576920A1 | 2005-09-21 | |||
| JPH04183430A | 1992-06-30 | |||
| JP2005293214A | 2005-10-20 | |||
| US20030139650A1 | 2003-07-24 | |||
| JP2006058711A | 2006-03-02 |
Other References:
See also references of EP 1992270A4
Attorney, Agent or Firm:
ITOH, Susumu (4-4 Nishishinjuku 7-chome, Shinjuku-k, Tokyo 23, JP)
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