US 6,983,020 B2
Method and apparatus for fast block motion detection
Bernd O. Christiansen, Goleta, Calif. (US)
Assigned to Citrix Online LLC, Santa Barbara, Calif. (US)
Filed on Mar. 25, 2002, as Appl. No. 10/107,981.
Prior Publication US 2003/0179951 A1, Sep. 25, 2003
Int. Cl. H04N 7/12 (2006.01)
U.S. Cl. 375—240.16 41 Claims
OG exemplary drawing
 
29. A system comprising:
an encoder configured to
correlate one or more instances of one or more features in a first image to instances of the same features in a reference image,
determine a first region, which occurs in both the first image and the reference image but possibly displaced between the first image and the reference image, based on the correlation of features in the first image to instances of the same features in the reference image; and
a decoder configured to
receive information from the encoder, and
update a second image by employing a copy of the reference image to reconstruct the first region.