Patent Number: 6,295,091

Title: Method and apparatus for de-interlacing video fields for superior edge preservation

Abstract: Methods of interpolating missing pixels between interlaced scan lines is disclosed. A first method interpolates a desired pixel by selecting the median pixel from a first pixel above and to the left of the desired pixel, a second pixel above the desired pixel, a third pixel above and to the right of the desired pixel, a fourth pixel below and to the left of the desired pixel, a fifth pixel below the desired pixel, a sixth pixel below and to the right of the desired pixel, and a seventh pixel from the previous video field having same position of the desired pixel. A second method of interpolating a desired pixel between scan lines first selects a minimal variance direction between: a first direction comprising a first pixel above and to the left of the desired pixel and a second pixel below and to the right of the desired pixel, a second direction comprising a third pixel above the desired pixel and a fourth pixel below the desired pixel, and a third direction comprising a fifth pixel above and to the right of the desired pixel and a sixth pixel below and to the left of the desired pixel. Then the second method selects the two pixels comprising the minimal variance direction as a minimal variance above pixel and a minimal variance below pixel. Finally, the second method selects the median pixel of the minimal variance above pixel, the minimal variance below pixel, and a pixel from the previous video field having same position of the desired pixel.

Inventors: Huang; Samson (Cupertino, CA)

Assignee: Intel Corporation

International Classification: H04N 5/44 (20060101); H04N 007/01 (); H04N 011/20 ()

Expiration Date: 09/25/2018