Mark M Vojkovich

7796191, Sep 14, 2010

Sep 21, 2005

11/232484

Mark M. Vojkovich - Sunnyvale CA, US

NVIDIA Corporation - Santa Clara CA

H04N 7/01
H04N 11/20
H04N 5/14
H04N 9/64
G06K 9/40
G06K 9/48

348448, 348452, 348699, 348701, 382199, 382266

One embodiment of an edge-preserving vertical interpolation system constructs a de-interlaced video frame on a pixel-by-pixel basis using an edge-preserving vertical interpolation technique. Pixels within a pixel window centered about a selected pixel determine the direction of an intensity gradient associated with the selected pixel. A first pixel is constructed by interpolating between pixels that are perpendicular to the direction of the intensity gradient and a confidence factor is computed that indicates the likelihood that there is only one edge within the pixel window. A second pixel is constructed using a non-edge-preserving vertical interpolation technique. Interpolating between the first pixel and the second pixel based on the confidence factor generates a pixel in the de-interlaced video frame corresponding to the selected pixel. Unlike prior art techniques, the present invention does not attempt to correlate between pixel features and is therefore more robust to noisy pixel data than prior art techniques.

7787048, Aug 31, 2010

Sep 8, 2005

11/222893

Mark M. Vojkovich - Sunnyvale CA, US
Hassane S. Azar - San Francisco CA, US

NVIDIA Corporation - Santa Clara CA

H04N 7/01
H04N 11/20

348452, 348448

One embodiment of a motion-adaptive video de-interlacing system includes a motion estimator and a pixel interpolator. The motion estimator determines the magnitude of motion associated with each pixel within a de-interlaced video frame. In some instances, as determined by the motion values, the pixel interpolator produces final pixel values by blending between pixel values produced through different de-interlacing methods optimized for different levels of pixel motion. The present invention advantageously produces de-interlaced video frames having relatively better picture quality than those produced using prior art techniques, especially for small pixel motions.

20150229879, Aug 13, 2015

Feb 13, 2014

14/179825

- Santa Clara CA, US
Mark Vojkovich - Santa Clara CA, US

NVIDIA CORPORATION - Santa Clara CA

H04N 7/01

A system and method of producing a frame of a video image from an interlaced field. In one embodiment, the method includes: (1) creating an equal-intensity trace from present samples in the field, (2) recognizing an equal-intensity path in the equal-intensity trace, (3) at least partially straightening the equal-intensity path and (4) using the equal-intensity path to determine an intensity value for a missing sample in the frame.