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:
Nov. 09, 2004
Filed:
Sep. 05, 2002
Martin Paul Tlaskal, Elizabeth Bay, AU;
Timothy Merrick Long, Lindfield, AU;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A method and apparatus for creating an image is disclosed. The image is formed by rendering at least a plurality of graphical objects to be composited according to a compositing expression. Each object has a predetermined outline. The method comprises the following steps. Firstly, dividing a space in which the outlines are defined into a plurality of mutually exclusive regions wherein each of the regions is defined by a region outline substantially following at least one of the predetermined outlines or parts thereof. Secondly, examining each of the regions to determine those objects which contribute to the regions. Thirdly, modifying the compositing expression on the basis of the contribution of each of the objects within the region to form an optimised compositing expression for each region. Fourthly, compositing the image using each of the optimised compositing expressions.