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US 8,576,244 B2Granted
Video signal generation apparatus and method minimizing crosstalk between luminance signal and color difference signal
AssigneeSamsung Electronics Co., Ltd.
InventorsSeo Young Choi, Ho Young Lee, Yun-Tae Kim, Du-Sik Park, Ji Young Hong
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Abstract
Provided is a video signal generation apparatus and method that may minimize crosstalk between a luminance signal and color difference signals. The video signal generation apparatus may generate the luminance signal using a nonlinear Y signal and then generate color difference signals using a nonlinear XYZ signal to maximize a de-correlation characteristic between the luminance signal and the color difference signals.
Claims34
An apparatus generating a video signal, comprising:
- a luminance signal generator to generate a luminance signal A using one of a nonlinear Y signal and a sum of a nonlinear XYZ signal;
- and
- a color difference signal generator to generate a color difference signal from the nonlinear XYZ signal to maximize a de-correlation characteristic in combinations of the luminance signal A and a Yellow-Blue color difference signal CYB, of the luminance signal A and a Red-Green color difference signal CRG, and of the Yellow-Blue color difference signal CYB and the Red-Green color difference signal CRG.
An apparatus generating a video signal, comprising:
- a linear luminance signal generator to generate a linear luminance signal using linear RGB signals with respect to an input image;
- a luminance signal converter to convert the linear luminance signal to a nonlinear luminance signal;
- an RGB signal converter to convert the linear RGB signals to nonlinear RGB signals;
- and
- a color difference signal generator to generate a color difference signal using one luminance signal from one of the linear luminance signal and the nonlinear luminance signal, and at least two signals from one of the linear RGB signals and the nonlinear RGB signals.
2 more elements
An apparatus processing a video signal, comprising:
- a luminance signal converter to convert a nonlinear luminance signal to a linear luminance signal;
- a nonlinear signal generator to generate at least two nonlinear signals in nonlinear RGB signals using a nonlinear color difference signal;
- an RGB signal converter to convert the at least two nonlinear signals in the nonlinear RGB signals to at least two linear signals in linear RGB signals;
- and
- a linear RGB signal generator to generate a complete set of linear RGB signals using the linear luminance signal and the at least two linear signals in the linear RGB signals.
2 more elements
A method of generating a video signal, comprising:
- generating, by at least one processing device, a luminance signal A using one of a nonlinear Y signal and a sum of a nonlinear XYZ signal;
- and
- generating, by the at least one processing device, a color difference signal from the nonlinear XYZ signal to maximize a de-correlation characteristic in combinations of the luminance signal A and a Yellow-Blue color difference signal CYB, of the luminance signal A and a Red-Green color difference signal CRG, and of the Yellow-Blue color difference signal CYB and the Red-Green color difference signal CRG.
A method of generating a video signal, comprising:
- generating, by at least one processing device, a linear luminance signal using linear RGB signals with respect to an input image;
- converting, by the at least one processing device, the linear luminance signal to a nonlinear luminance signal;
- converting, by the at least one processing device, the linear RGB signals to nonlinear RGB signals;
- and
- generating, by the at least one processing device, a color difference signal using one luminance signal from one of the linear luminance signal and the nonlinear luminance signal, and at least two signals from one of the linear RGB signals and the nonlinear RGB signals.
2 more elements
A method of processing a video signal, comprising:
- converting, by at least one processing device, a nonlinear luminance signal to a linear luminance signal;
- generating, by the at least one processing device, at least two nonlinear signals in nonlinear RGB signals using a nonlinear color difference signal;
- converting, by the at least one processing device, the at least two nonlinear signals in the nonlinear RGB signals to at least two linear signals in linear RGB signals;
- and
- generating, by the at least one processing device, the linear RGB signals using the linear luminance signal and the at least two linear signals in the linear RGB signals.
2 more elements
Dependencies are inferred from the claim text.