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Motion detection using field-difference measurements

  • US 6,104,755 A
  • Filed: 09/12/1997
  • Issued: 08/15/2000
  • Est. Priority Date: 09/13/1996
  • Status: Expired due to Term
First Claim
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1. A method of converting interlaced video data to progressive scanned data said method comprising:

  • receiving a series of fields of said interlaced video data;

    calculating a field-difference motion value for a missing pixel by;

    determining a prior-field average value equal to the average of same-pixel same-row prior-field image data and same-pixel two-rows-adjacent prior-field image data of said received interlaced video data; and

    determining the absolute value of the difference between same-pixel adjacent-row same-field image data and said prior-field average value data of said received interlaced video data; and

    selecting a proscan algorithm based on said field-difference motion value.

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