| US 7,499,103 B2 | ||
| Method and apparatus for detecting frequency in digital video images | ||
| Laurence A. Thompson, Saratoga, Calif. (US); and Dale R. Adams, San Jose, Calif. (US) | ||
| Assigned to Silicon Image, Inc., Sunnyvale, Calif. (US) | ||
| Filed on Feb. 17, 2006, as Appl. No. 11/357,364. | ||
| Application 11/357364 is a continuation of application No. 10/251642, filed on Sep. 19, 2002, granted, now 7,027,099. | ||
| Application 10/251642 is a continuation of application No. 09/372713, filed on Aug. 11, 1999, granted, now 6,489,998. | ||
| Claims priority of provisional application 60/096144, filed on Aug. 11, 1999. | ||
| Prior Publication US 2006/0262217 A1, Nov. 23, 2006 | ||
| Int. Cl. H04N 7/01 (2006.01) | ||
| U.S. Cl. 348—448 | 13 Claims |
| 1. A deinterlacing processor comprising:
an input port adapted to receive an interlaced video stream and an output port adapted to communicate a deinterlaced video
stream having reduced motion artifacts to an external device;
said deinterlacing processor operable to perform a spatial frequency analysis upon a plurality of vertically aligned pixels
of a video frame having two adjacent video fields of said received interlaced video stream in order to generate a frequency
analysis result;
said deinterlacing processor using said frequency analysis result to detect a motion artifact and to determine a plurality
of motion artifact detection values of a motion artifact to reduce the visibility of the motion artifact in the video frame,
the plurality of motion artifact detection values including a determined ultimate detection value for each of the plurality
of motion artifact detection values which are each based upon a characteristic spatial frequency and a number of elements
equal to the plurality of vertically aligned pixels; and
said deinterlacing processor generating said deinterlaced video stream having reduced motion artifacts using said frequency
analysis result and said plurality of motion artifact detection values.
|