Method of moving a pixel a subpixel distance
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United States of America Patent
Stats
-
Apr 2, 1996
Issued Date -
N/A
app pub date -
Mar 9, 1995
filing date -
Aug 15, 1990
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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