The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 09, 2004
Filed:
Sep. 12, 1997
Stephen Brett, Sutton-at-Home, GB;
Pandora International Ltd., Northfleet, GB;
Abstract
The invention provides a method of digitally processing a sequence of video frames, in which an object is selected in a first frame; digital object data corresponding to the shape of the object is stored on a digital data storage mechanism, together with digital modification data corresponding to a desired modification of at least one appearance attribute of the object; the object is identified in a second frame of the sequence by means of the object data; and the appearance attribute of the object in the second frame is modified in accordance with the stored modification data. The invention also provides a method of analysing a sequence of video frames, in which a plurality of corresponding lines are sampled from a plurality of consecutive frames of the sequence; the content of the sampled lines is compared for corresponding lines in different frames; a measure of the difference in the content of the corresponding lines is calculated; a first signal is produced if the measure of difference exceeds a first predetermined threshold; and a second signal is produced, in the absence of the first signal, if the measure of difference exceeds a second predetermined threshold, lower than the first threshold.