Method of moving a pixel a subpixel distance

Details Method of moving a pixel a subpixel distance Method of moving a pixel a subpixel distance

1995-03-09

1996-04-02

Herndon, Heather R.

395138, G06T 1300

Patent

active

055048498

ABSTRACT:
The invention relates to a method of moving a pixel a subpixel distance and is intended to be applied in picture coding methods to determine the value of a pixel located between the fixed pixels on the screen. The pixel value is calculated using a known motion vector and the pixel values located in the vicinity of the corresponding pixel in the previous picture. According to the invention at least 3.times.3 pixels from the previous picture are used and the pixel value is calculated as a sum of the previous pixel values weighted by coefficients depending of the motion vector. The coefficients are preferrably calculated as polynomials of the subpixel part of the motion vector.

REFERENCES:
patent: 4361853 (1982-11-01), Remy et al.
patent: 4578812 (1986-03-01), Yui
patent: 4653013 (1987-03-01), Collins et al.
patent: 5025405 (1991-06-01), Swanson
patent: 5054100 (1991-10-01), Tai

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