Method and structure for performing motion estimation using redu

Details Method and structure for performing motion estimation using redu Method and structure for performing motion estimation using redu

1995-04-04

1998-01-27

Trammell, James P.

Boots, shoes, and leggings

348277, H04N 7015

Patent

active

057127999

ABSTRACT:
A method of approximating the pixel intensity values of a current block using the pixel intensity values of a search window, wherein the precision of the number of bits used to represent the pixel intensity values is reduced. The pixel intensity values of the pixels in the current block are averaged to determine a first average pixel intensity value. The pixel intensity values of the current block which have a pixel intensity value less than the first average pixel intensity value are averaged to determine a second average pixel intensity value. The pixel intensity values of the current block which have a pixel intensity value greater than the first average pixel intensity value are averaged to determine a third average pixel intensity value. The first, second and third average pixel intensity values are used to determine thresholded pixel intensity values for the current block pixels and the search window pixels, thereby creating a thresholded current block and a thresholded search window.

REFERENCES:
patent: 4396903 (1983-08-01), Habicht et al.
patent: 5400087 (1995-03-01), Uramoto et al.
patent: 5450504 (1995-09-01), Calia
Chan et al., "Motion Estimation Aarchitecture for Video Compression", IEEE Transactions on Consumer Electronics, vol. 39, No. 3, Aug. 1993, pp. 292-297, XP000396294.
Patent Abstracts of Japan vol. 12, No. 362 (E-663), 28 Sep. 1988 & JP,A,63 116584 (Matsushita Electric Ind Co Ltd), 20 May 1988.

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