Method and apparatus for sharpening an image
AssigneeSilverbrook Research Pty Ltd
InventorsSimon Robert Walmsley, Paul Lapstun
Life of this patent
Estimating the term…
Abstract
A method and apparatus for sharpening an image. An initial luminance channel is extracted from a data set that includes at least one color plane indicative of the image. The initial luminance channel is in a color space different to that of the at least one color plane. The initial luminance channel is sharpened to form a revised luminance channel, and a portion of the revised luminance channel added to at least one of the color planes of the data set to sharpen the image.
Claims13
A method for sharpening an image, the method including the steps of:
- receiving a data set including at least one color plane indicative of the image;
- extracting an initial luminance channel from the data set, the initial luminance channel being in a color space different to that of the at least one color plane;
- sharpening the initial luminance channel to form a revised luminance channel;
- and
- adding a portion of the revised luminance channel to at least one of the color planes of the data set to sharpen the image.
An apparatus for sharpening an image, the apparatus including:
- an input for receiving a data set including at least one color plane indicative of the image;
- extraction means configured to extract an initial luminance channel from the data set, the initial luminance channel being in a color space different to that of the at least one color plane;
- sharpening means configured to sharpen the initial luminance channel to form a revised luminance channel;
- and
- processing means configured to add a proportion of the revised luminance channel to at least one of the color planes of the data set.
Dependencies are inferred from the claim text.