H - Electricity – 04 – N
Patent
H - Electricity
04
N
H04N 9/64 (2006.01) H04N 9/67 (2006.01) H04N 9/68 (2006.01)
Patent
CA 2417335
The values of the primary color space components of an image signal, such as the components of RGB video signal, are maintained within their allowed range by modifying the signal in a different color space, such as YUV space. Specifically, the U and V chrominance components are attenuated by an attenuation factor g while the luminance component Y is not modified. The value of g is the largest possible value less than 1 that will cause all primary color space components that would otherwise be outside the allowed range to be within that range. A high quality of the displayed image is maintained.
Les valeurs des éléments d'espace de couleurs primaires d'un signal d'image, comme les éléments d'un signal vidéo RGB, sont maintenues dans leur gamme autorisée en modifiant le signal dans un différent espace chromatique, comme l'espace YUV. Plus précisément, les éléments de chrominance U et V sont atténués par un facteur d'atténuation g, alors que l'élément de luminance Y n'est pas modifié. La valeur g est la plus grande valeur possible moins de 1 qui assurera la conformité de tous les éléments de l'espace de couleurs primaires qui autrement seraient à l'extérieur de la gamme autorisée. L'image affichée est de grande qualité.
Dumitras Adriana
Haskell Barin Geoffry
At & T. Corp.
Kirby Eades Gale Baker
LandOfFree
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