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:
Dec. 23, 2008
Filed:
Jan. 26, 2006
Jing Wu, New South Wales, AU;
Alison Lennon, New South Wales, AU;
Jing Wu, New South Wales, AU;
Alison Lennon, New South Wales, AU;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method of extracting key frames from a video sequence, which video sequence includes MPEG compressed video data having block motion vectors. The method initially partially decompresses () the MPEG compressed video data to obtain block motion vectors and converts () the block motion vectors to forward block motion vectors. The method then generates () global motion signals and generates () dominant global direction clusters. The method then selects () potential key frames of the video sequence using the generated dominant global direction clusters. The method lastly decompresses () the selected key frames to obtain the extracted key frames.