Television – Camera – system and detail – Optics
Reexamination Certificate
2007-10-23
2007-10-23
Srivastava, Vivek (Department: 2622)
Television
Camera, system and detail
Optics
Reexamination Certificate
active
10798211
ABSTRACT:
Defective pixels in a CMOS array give rise to spot noise that diminishes the integrity of the resulting image. Because CMOS arrays and digital logic can be fabricated on the same integrated circuit using the same processing technology and relatively inexpensive and fast circuit can be employed to digitally filter the pixel data stream and to identify pixels having values that do not fall in the range defined by the immediately neighboring pixels and the deviate from the neighboring pixels by more than a threshold amount. Such conditions would indicate that the deviation is caused by a defective pixel rather than by desired image data. The threshold amount can be preprogrammed or can be provided by a user or can be dynamically set using feedback indicating image quality. The filter would also provide a solution for other sensors such as CCD, although a single chip solution would likely not be possible.
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Chen Zhiliang Julian
Clynes Steven Derek
Dierschke Eugene G.
Liu Anli
Brady III W. James
Henn Timothy J
Kempler William B
Srivastava Vivek
Telecky , Jr. Frederick J.
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