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:
Oct. 04, 1983
Filed:
Sep. 22, 1981
Reginald F McCoy, Gainesville, FL (US);
Other;
Abstract
Chroma-key system combining an image of a foreground subject located in front of a colored backing, with a background image, in which limitations on the permissible colors of the foreground subject are reduced; and in which the chrominance and luminance of areas having the backing color in the foreground image are suppressed to prevent their undesired appearance in the combined image; and in which transitions in the signal indicating presence of the backing color are sharpened while maintaining amplitude proportionality to compensate for bandwidth limitation of the chrominance signal from which this indicating signal derives; and in which transitions in the chrominance component of the foreground signal at boundaries between subject and backing are similarly sharpened; and in which the luminance component of fine detail located in front of the backing is combined with the backing color indicating signal to include such fine detail in the combined image.