Correction of flicker associated with noninterlaced-to-interlace

Details Correction of flicker associated with noninterlaced-to-interlace Correction of flicker associated with noninterlaced-to-interlace

1996-03-25

1999-06-08

Lee, Michael

Television

Format conversion

Progressive to interlace

348447, 348910, H04N 701, H04N 1120

Patent

active

059108207

ABSTRACT:
A method and apparatus for correcting the flicker artifact associated with noninterlaced to interlaced video conversion includes a Set-Interpolative-Threshold comparator function whereby weighted line averaging is used only if the difference in luminance, or other color component, of vertically adjacent pixels in the noninterlaced video exceeds a user set threshold value. When the differential value in luminance, or other color component, is greater than the threshold value, and such line averaging is used, the negative effects of the line averaging, such as blurring and darkening of the resulting video frame, are at least partially corrected by aperture/inverse aperture correction.

REFERENCES:
patent: 4991021 (1991-02-01), Nikoh et al.
patent: 5136385 (1992-08-01), Campbell

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