| US 7,598,961 B2 | ||
| method and apparatus for converting from a source color space to a target color space | ||
| Michael Francis Higgins, Cazadaro, Calif. (US) | ||
| Assigned to Samsung Electronics Co., Ltd., Suwon-si, Gyeonggi-do (Korea, Republic of) | ||
| Filed on Oct. 21, 2003, as Appl. No. 10/691,396. | ||
| Prior Publication US 2005/0083352 A1, Apr. 21, 2005 | ||
| Int. Cl. G09G 5/02 (2006.01) | ||
| U.S. Cl. 345—589 [345/590; 345/591; 345/604; 345/690] | 23 Claims |
| 1. A machine-implemented method that defines an image displayed by a display device having M color sources each respectively
outputting a respective one of M unique primary colors, where the display device thereby has a displayable color space that
is definable as a polygon disposed within a rectangular gamut space where the displayable color space has M>N primary color
points defining vertices of the polygon such that substantially any color point on linear boundaries of the polygon or in
an interior of the polygon can be displayed by the M color sources of the display device, where M and N are each a whole number
greater than 2 and N defines primary colors of a source color space from which sourced color points are to be rendered by
use of the M>N color sources of the display device, said machine-implemented method converting the sourced color points into
target color data signals that define said image displayed by the display device and said method comprising:
(a) first identifying for each sourced color point, a corresponding one of a plurality of hypothetical triangular regions
as the region inside of which, or on whose boundaries the sourced color point lies, where said hypothetical triangular regions
populate the displayable color space polygon and each of the hypothetical regions has a first vertex at a predefined and common
interior point inside the polygon and each hypothetical region respectively has two spaced apart points on the boundary of
the polygon as respective second and third vertices of the triangular region;
(b) in response to said first identifying, second identifying a corresponding one of a prespecified plurality of conversion
matrices that respectively correspond to the plurality of hypothetical regions, where the identified conversion matrix corresponds
to the first identified hypothetical triangular region; and
(c) using the identified conversion matrix to convert the sourced color point into a corresponding target color data signal
that defines said image displayed by the display device.
|