Image analysis – Image enhancement or restoration – Intensity – brightness – contrast – or shading correction
Reexamination Certificate
2004-12-06
2009-12-22
Mehta, Bhavesh M (Department: 2624)
Image analysis
Image enhancement or restoration
Intensity, brightness, contrast, or shading correction
C348S246000, C348S247000
Reexamination Certificate
active
07636494
ABSTRACT:
When charges Q (x, y) transferred from an image inputting device1are to be converted into first signal intensities S′ (x, y) and signal processing is to be performed for the first signal intensity S′ (x, y) of a particular pixel, a maximum value Smax, a minimum value Smin and an average value Save are calculated from signal intensities S′ (x−1, y) and S′ (x+1, y) at adjacent pixels. When S′ (x, y)>Smax×A is satisfied, it is determined that the signal intensity S (x, y) at the particular pixel=Save×C (where A and C are coefficients), whereas when S′ (x, y)<Smin×B is satisfied, it is determined that the signal intensity S (x, y)=Save×D (where B and D are coefficients), and processing is performed so as to obtain an appropriate intensity S (x, y). This makes it possible to accurately judge a defective pixel attributable to dirt adhering to a pixel array of the image inputting device, a crystal defect, etc., and compensate a defect in an image caused by the defective pixel.
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Chinese Office Action dated Aug. 18, 2006 with English translation.
Amended claims filed in response to the first office action in counterpart Chinese application No. 200410100269.3 with English translation.
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Dickinson Wright PLLC
Mehta Bhavesh M
Motsinger Sean
Panasonic Corporation
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