Component video accumulation effect
AssigneeThe Grass Valley Group, Inc.
InventorsDaniel J. Chaplin, Paul M. Trethewey, Christopher R. Hansen, R. Barry Angell
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Abstract
A method for accumulating component video signals non-additively adds the luminance components to produce an accumulated luminance component, and additively adds the chrominance components to produce an accumulated chrominance component. The accumulated chrominance component may be clipped to limit chrominance values in an overlap area to legal color values. The intentional overlap of the component video signals produces an accumulation special effect in the overlap area.
Claims7
A method for accumulating component video signals, each having a luminance component and a chrominance component, comprising the steps of:
- non-additively mixing the luminance components of the component video signals to produce an accumulated luminance component;
- and
- additively mixing the chrominance components of the component video signals to produce an accumulated chrominance component.
An apparatus for accumulating component video signals each having a luminance component and a chrominance component comprising:
- means for non-additively mixing the luminance components of the component video signals to produce an accumulated luminance component;
- and
- means for additively mixing the chrominance components of the component video signals to produce an accumulated chrominance component.
A method for producing an accumulation special effect from a plurality of component video signals, each having a luminance component and a chrominance component, comprising the steps of:
- intentionally overlapping the component video signals to produce an overlap area;
- non-additively mixing the luminance components to form an accumulated luminance component;
- additively mixing the chrominance components to form an accumulated chrominance component:
- whereby the accumulation special effect occurs in the overlap area where the luminance values reflect the luminance components having the highest luminance values and the chrominance values are a mix of the chrominance values from the chrominance components.
Dependencies are inferred from the claim text.