| US 7,538,824 B1 | ||
| Systems and methods for reducing noise during video deinterlacing | ||
| Sanjay R. Pillay, Austin, Tex. (US); Brian F. Bounds, Dripping Springs, Tex. (US); and William Lynn Gallagher, Austin, Tex. (US) | ||
| Assigned to Magnum Semiconductor, Inc., Fremont, Calif. (US) | ||
| Filed on Aug. 18, 2005, as Appl. No. 11/206,402. | ||
| Int. Cl. H04N 5/14 (2006.01); H04N 5/21 (2006.01); H04N 17/00 (2006.01) | ||
| U.S. Cl. 348—701 [348/452; 348/607] | 18 Claims |
| 1. A method of deinterlacing comprising:
generating, by motion adaptive deinterlacing, a deinterlaced display frame including a reference field of lines of display
pixels of a first parity and a generated field of lines of display pixels of a second parity, comprising:
interpolating between pixels of the reference field to generate pixels in the generated field in areas of the deinterlaced
frame having motion; and
weaving pixels from a following field of lines of the second parity to generate pixels in the generated field in areas of
the deinterlaced frame without motion;
generating a frame motion map including bits representing a presence of motion or an absence of motion at corresponding display
pixels of the reference and generated fields;
testing for noise at a selected display pixel of the reference field utilizing the frame motion map; and
in response to detecting noise at the selected display pixel of the reference field, replacing a pixel value corresponding
to the selected display pixel with a pixel value generated by interpolating between display pixel values corresponding to
neighboring display pixels in the generated field.
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