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Optimization-method-for-the-efficient-production-of-images

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Optimization method for the efficient production of images

Details

Inventors: Politis, George;
Assignee: Canon Information Systems Research Australia Pty Ltd (); Canon Kabushiki Kaisha ()
Primary Examiner: Nguyen; Phu K.
Assistant Examiner:
Attorney, Agent or Firm: Fitzpatrick, Cella, Harper & Scinto

A system, method and language for compositing or creating images in which the images typically comprise a plurality of graphical elements each including color and opacity information. The system utilizes operators having the graphical elements as operands in which the operators combine the operands according to a function defined by the operators, the colour information, and the opacity information, to produce new graphical elements. The system includes interpreting the language by parsing and executing a sequence of statements and forming an expression tree the nodes of which comprise the graphical elements. Instructions are then derived from the tree. Bounding box methods are used for locating active areas of graphical elements from the nodes. Manipulation of the expression tree is used to reduce the expected execution time of the compositing commands.

DETAILED DESCRIPTION It is an object of the present invention to provide a more effective means for the creation of image which is more efficient in the creation of at least one class of images.
In accordance with one aspect of the present invention there is provided a method of producing an image formed from a series of statements and from multiple graphical elements, said method comprising the steps of: determining an expression tree from a series of statements for the construction of said image by parsing and executing said series of statements one or more of which include operations which are used to create said expression tree, for each node in said tree, constructing a bounding box of the areas of the locations of which graphical elements of said node and its descendant nodes of the expression tree are active in the production of said image.

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