Pulse or digital communications – Bandwidth reduction or expansion – Television or motion video signal
Reexamination Certificate
2003-12-05
2009-12-29
Rao, Andy S (Department: 2621)
Pulse or digital communications
Bandwidth reduction or expansion
Television or motion video signal
C375S240160, C375S240270
Reexamination Certificate
active
07639741
ABSTRACT:
A method and apparatus for temporally filtering a video sequence using motion compensation in which motion information captures the motion of objects is disclosed. Pixels from a current frame are aligned with matching pixels from previous and/or future frames according to the motion of the surrounding object of arbitrary shape. A weighted average of the corresponding pixels is taken for each pixel in the current frame to produce a filtered version of the current frame. The weights may be adjusted to compensate for similarities between the frames and for blur transitions near object boundaries. A lighting offset may also be used to prevent erroneous lighting shifts during filtering.
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Holt Gary R.
Ratner Edward R.
Altera Corporation
Okamoto & Benedicto LLP
Rao Andy S
Werner David N.
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