Television – Format conversion – Line doublers type
Patent
1994-06-30
1996-05-28
Kostak, Victor R.
Television
Format conversion
Line doublers type
348448, H04N 701
Patent
active
055216447
ABSTRACT:
A hybrid deinterlace mechanism employs motion detection as a precursor to select the value for each missing pixel of a deinterlaced frame, which is generated by using four consecutive fields to produce a motion detection map that is subsequently coupled to a deinterlacer, together with a selected two of the four consecutive fields. These two selected fields and the motion map are sufficient for the deinterlacer to completely characterize the resulting deinterlaced frame. The deinterlacer switches between vertical interpolation and merging based upon motion. Motion is detected by applying a logic OR operation to respective even and odd field binary motion detection signals. In the absence of motion, the pixel values of an odd field and its immediately succeeding even field are merged. On the other hand, if motion is detected, vertical interpolation is carried out for the even field, by a linear combination of immediately adjacent pixels, respectively above and below the pixel of interest.
REFERENCES:
patent: 5260786 (1993-11-01), Kawashima et al.
patent: 5410356 (1995-04-01), Kikuchi et al.
Patti Andrew J.
Sezan M. Ibrahim
Eastman Kodak Company
Kostak Victor R.
Miller John W.
Watkins Peyton C.
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