Method and imaging apparatus for correcting defective pixel of solid-state image sensor, and method for creating pixel information
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United States of America Patent
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Nov 27, 2007
Grant Date -
Jul 29, 2004
app pub date -
Jan 15, 2004
filing date -
Jan 17, 2003
priority date (Note) -
Expired
status (Latency Note)
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Abstract
In a solid-state image sensor in which a large number of pixel cells each comprised of a combination of a main photosensitive pixel having a relatively large area and a subsidiary photosensitive pixel having a relatively small area are arranged, if the subsidiary photosensitive pixel has a defect for any pixel cell, division photometry data during AE processing is read, and the defective pixel is replaced with a value obtained by dividing the output value of the main photosensitive pixel at the same position by a sensitivity ratio only for a section for which it is determined that the main photosensitive pixel is not saturated. Thus, the pixel value of a defective pixel can be accurately corrected without causing a reduction in resolution sensitivity compared to a conventional method of correcting a defective pixel using surrounding pixel information.
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