Post-processing of interpolated images

Details Post-processing of interpolated images Post-processing of interpolated images

2006-11-14

2006-11-14

Ometz, David (Department: 2622)

Television

Format conversion

Line doublers type

C348S458000, C348S441000

Reexamination Certificate

active

07136107

ABSTRACT:
An image conversion unit (100) for converting an input image into an output image includes a first computing device (104) for computing a first weighted sum of a first group of pixel values, the first group of pixel values corresponding to pixels of the input image; a second computing device (102) for computing a second weighted sum of a second group of interpolated values, the second group of interpolated values being computed by interpolation for spatial locations which are not present at the sampling grid of the input image; a combining device (106) for computing a third sum by combining the first weighted sum and the second weighted sum; and a clipping device (108) for clipping the third sum between a minimum value and a maximum value, the minimum value and the maximum value being derived from pixel values of the input image.

REFERENCES:
patent: 4768092 (1988-08-01), Ishikawa
patent: 4985764 (1991-01-01), Sato
patent: 5093721 (1992-03-01), Rabii
patent: 5708474 (1998-01-01), Hong
patent: 6330032 (2001-12-01), Boehlke

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