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. 29, 2005
Filed:
Mar. 12, 2002
Geoffrey M. Park, Toronto, CA;
Geoffrey M. Park, Toronto, CA;
Sonic Solutions, Inc., Novato, CA (US);
Abstract
A method for chroma key masking including for a given pixel color, calculating a quadratic function of the pixel color coordinates based on a prescribed chroma key color, the quadratic function corresponding to an ellipsoid in a color space, generating a substantially transparent mask value for the given pixel color, if the quadratic function is less than a prescribed lower threshold, generating a substantially opaque mask value for the given pixel color, if the quadratic function is greater than a prescribed upper threshold, and generating a partially transparent mask value for the given pixel color, based on the value of the quadratic function, if the quadratic function is between the prescribed lower threshold and the prescribed upper threshold. A system is also described and claimed.