Interlaced-to-progressive conversion apparatus and method using

Details Interlaced-to-progressive conversion apparatus and method using Interlaced-to-progressive conversion apparatus and method using

1997-01-22

1999-08-24

Harvey, David E.

Television

Format conversion

Line doublers type

348452, H04N 701

Patent

active

059430990

ABSTRACT:
An interlaced-to-progressive conversion device includes a spatial interpolator for spatially interpolating an input interlaced image signal and outputting a spatially interpolated signal; a temporal interpolator for temporally interpolating the input interlaced image signal and outputting a temporally interpolated signal; a correlator for detecting a motion correlation, a vertical correlation, and a temporal-vertical correlation by using a predetermined number of sample data in a current field, a previous field and a next field; and a selector for comparing the motion correlation, the vertical correlation, and the temporal-vertical correlation with respective predetermined constants and selecting between one of the spatially interpolated signal and the temporally interpolated signal according to the results of the comparisons. The interlaced-to-progressive conversion device enhances the reliability of information of the motion and efficiently reduces an artifact by temporally or spatially interpolating an interlaced image signal using motion and spatial correlations.

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