Method and apparatus for converting an interlaced video frame se

Details Method and apparatus for converting an interlaced video frame se Method and apparatus for converting an interlaced video frame se

1995-03-27

1997-08-26

Metjahic, Safet

Television

Format conversion

Line doublers type

348451, 348448, H04N 701

Patent

active

056615256

ABSTRACT:
Method and apparatus are disclosed for deinterlacing of an interlaced video frame sequence using interpolation estimations, such as spatial and temporal interpolations. Interpolations requiring a less accurate estimation of missing pixel values in the frames being deinterlaced, such that an interpolation may be performed with a minimum of error, are performed before interpolations which require a more accurate estimation of missing pixel values for performing an interpolation, such that estimates of missing pixel values are obtained with a minimum of error. Interpolation estimations are weighted in combination for computing approximations of missing pixel values in accordance with the errors associated with the respective interpolations.

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patent: 5444493 (1995-08-01), Boie
Dubois, E. and Konrad, J., Motion Analysis and Image Sequence Processing, ch. "Estimation of 2-D Motion Fields from Image Sequences with Application to Motion-Compensated Processing," Boston, MA, Kluwer Academic Publishers, 1993, pp. 53-85.
Nguyen, A., and Dubois, E., "Spatio-Temporal Adaptive Interlaced-To-Progressive Conversion," Signal Processing of HDTV, Iv, Elsevier Science Publishers B.V., 1993, pp. 749-756.
Wang, F-M., et al., "Time-Recursive Deinterlacing for IDTV and Pyramid Coding," Signal Processing: Image Communication 2, Elsevier Science Publishers B.V., 1990, pp. 365-374.

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