06005639 is referenced by 22 patents and cites 11 patents.

The appropriate one of a list of possible motion vectors is applied to each region of a video image. An image value for that region is determined for each of four successive fields, for each of the possible motion vectors. The values for these four fields are compared and when the values are substantially the same for a given vector it is assumed that is the vector appropriate to that region. The vectors appropriate to regions of obscured or revealed background can also be assigned by comparing inter-field differences and determining regions where the inter-field differences are high for the central pair and one outer pair and low for the other outer pair of fields. To generate regions corresponding to obscured background only information from the earlier fields is used and to generate regions corresponding to revealed background only information from the later fields are used.

Title
Vector assignment for video image motion compensation
Application Number
969237
Publication Number
6005639
Application Date
August 25, 1997
Publication Date
December 21, 1999
Inventor
Michael Burl
London
GB
Graham Alexander Thomas
Tadworth
GB
Agent
Dike Bronstein Roberts & Cushman
Agent
George W Neuner
Assignee
BBC Broadcasting House
GB
IPC
H04N 7/32
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