Title:
CCD撮像装置のスミア低減
Document Type and Number:
Japanese Patent JP2006528444
Kind Code:
A
Abstract:
Vertical and horizontal smear in images produced by a CCD imager can be compensated for by detecting the boundaries of the smear and substituting data from an alternative part of the image, or interpolated data within those boundaries. Vertical, or frame transfer, smear can also be compensated for by producing an error signal from charge accumulated during frame transfer and corresponding to one or more masked rows of the CCD imager. This error signal can be subtracted from the line signals corresponding to each row of the CCD images receiving radiation during image acquisitions. The CCD imager includes a multiplication register. The dynamic range of the imager may be extended by varying the gain of the multiplication register, for example on a line-by-line or frame-by-frame basis.
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Inventors:
Hazelwood Michael John
Hatton Samuel Harrison
Weatherup Clifford Robert
Hatton Samuel Harrison
Weatherup Clifford Robert
Application Number:
JP2006520892A
Publication Date:
December 14, 2006
Filing Date:
July 21, 2004
Export Citation:
Assignee:
E2V Technologies (UK) Limited
International Classes:
G06T5/00; H01L27/148; H04N5/14; H04N5/359; H04N5/372; H04N5/3725; H04N5/374
Domestic Patent References:
| JPH10304256A | 1998-11-13 | |||
| JPH0856310A | 1996-02-27 |
Foreign References:
| US4490744A | 1984-12-25 |
Attorney, Agent or Firm:
Sadao Kumakura
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda
Fumiaki Otsuka
Takaki Nishijima
Hiroyuki Suda