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:
Jul. 25, 2006
Filed:
Dec. 19, 2002
Benoit Sevigny, Montreal, CA;
Benoit Sevigny, Montreal, CA;
Autodesk, Inc., San Rafael, CA (US);
Abstract
Apparatus is provided to color-suppress a source frame that is composed of a plurality of pixels, each pixel being represented by three components defining a position within a color space. The source frame, comprising a foreground image against a background of a substantially uniform backing color, is provided to a processing means via an input means. A distance value is defined that for any, pixel describes how close its color is to a specified color, and the processing means calculates a transformation that maximises the distance value of a selected background pixel. Then, for each pixel, the processing means calculates a transparency value that is a function of the distance value of the corresponding transformed pixel. The transparency value is used to calculate how much of the backing color should be subtracted. The foreground image can then be composited with a replacement background using the same transparency values.