Image processing apparatus

Details Image processing apparatus Image processing apparatus

1996-09-13

1999-08-10

Boudreau, Leo H.

Image analysis

Color image processing

382300, G06K 900

Patent

active

059370858

ABSTRACT:
An image processing apparatus includes a color difference data interpolator for alternately calculating the interpolation data items of color difference signals Cb and Cr in a time-sharing process. The interpolator includes registers for storing therein data items sb and sr of input color difference data items ICb and ICr, selectors for selecting either one of the data items ICb, sb, ICr, and sr and respectively outputting data items t1 and t2, an internal ratio calculating section for receiving the data items t1 and t2 to conduct an operation of (3.times.t1+t2) and outputting internal ratio data D, and registers for storing color difference Cb data B supplied from the data D. Consequently, an image processing circuit for the interpolation to enlarge the picture size of video data in the compressed YCbCr data format is reduced in the hardware size.

REFERENCES:
patent: 4672424 (1987-06-01), Lechner

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