Title:
IMAGE PROCESSOR FOR ENDOSCOPE
Document Type and Number:
Japanese Patent JP3271838
Kind Code:
B2
Abstract:
PURPOSE: To improve the quality of picture of an observation image in a laser treatment by reducing or removing smear in the laser treatment.
CONSTITUTION: A signal calculated with a mean calculation circuit 18 is cleared of a halation part H to extract a smear component exceeding a specified level, namely, of a high luminance with a high luminance part calculation circuit 21 and a slight correction, that is, a correction to expand the bottoms of a low level of amplification and extraction components is performed with a signal expansion circuit 22 and an LPF23. Moreover, the smear component is removed from an original image with a subtraction circuit 26. Here, a control circuit 26 works to operate the subtraction circuit 26 at a position where an output of a smear level calculation circuit 24, that is, a high luminance smear part, not the halation part H is detected and only when a laser is turned ON. In other words, this prevents malfunctioning caused by halation or others.
Inventors:
Kazunari Nakamura
Keiichi Hiyama
Keiichi Hiyama
Application Number:
JP26015393A
Publication Date:
April 08, 2002
Filing Date:
October 18, 1993
Export Citation:
Assignee:
Olympus Optical Co., Ltd.
International Classes:
G02B23/26; A61B1/04; H04N5/213; H04N5/335; H04N5/359; H04N5/372; H04N5/378; H04N5/225; (IPC1-7): A61B1/04; G02B23/26; H04N5/213; H04N5/335
Domestic Patent References:
| JP62286431A | ||||
| JP3241981A | ||||
| JP3270582A |
Attorney, Agent or Firm:
Susumu Ito
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