Image analysis – Image enhancement or restoration – Focus measuring or adjusting
Reexamination Certificate
2008-03-25
2008-03-25
Couso, Yon J. (Department: 2624)
Image analysis
Image enhancement or restoration
Focus measuring or adjusting
C396S087000, C348S335000
Reexamination Certificate
active
10858468
ABSTRACT:
A calibrating apparatus for a zoom lens comprising: a first image-acquiring section60for acquiring a first image-for-calibration by photographing an area, in which reference marks for calibration are positioned, with a photographic device-to-be-calibrated19whose focal length is set to a first focal length; a second image-acquiring section62for acquiring a second image-for-calibration by photographing the area, in which the reference marks for calibration are positioned, with the photographic device-to-be-calibrated19whose focal length is set to a second focal length; a correction coefficient calculating section64for calculating a calibration correction coefficient for the first and second focal lengths, with the use of the photographed reference marks in the first and second image-for-calibrations: and a reference mark inferring section66for inferring a positional relationship of the photographed reference marks for calibration in the second image-for-calibration, with the use of the photographed reference marks for calibration in the first image-for-calibration.
REFERENCES:
patent: 6618559 (2003-09-01), Hofer
patent: 2005/0007477 (2005-01-01), Ahiska
patent: 2005/0122400 (2005-06-01), Kochi et al.
patent: 9-329418 (1997-12-01), None
Kochi Nobuo
Noma Takayuki
Otani Hitoshi
Couso Yon J.
Foley & Lardner LLP
Topcon Corporation
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