Natural luminance transient enhancement
AssigneeKoninklijke Philips Electronics N.V.
InventorErwin B. Bellers
Life of this patent
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Abstract
A method and apparatus for enhancing an edge transient contained in a video signal include identifying the edge transient and the edge center of the edge transient in the video signal; selecting a side of the edge transient, relative to an edge center thereof, to enhance; and adding an edge change signal to the video signal to asymmetrically enhance the selected edge transient.
Claims18
A method of enhancing an edge transient contained in a video signal, the method comprising:
- identifying the edge transient in the video signal;
- asymmetrically enhancing the edge transient of the video signal.
An apparatus for enhancing an edge transient contained in a video signal, the apparatus comprising:
- means for identifying the edge transient in the video signal;
- means for asymmetrically enhancing the edge transient of the video signal.
A video signal having an enhanced edge transient produced by the steps comprising:
- identifying the edge transient in the video signal;
- asymmetrically enhancing the edge transient of the video signal.
A video signal comprising:
- an edge transient;
- an edge center defined by the edge transient;
- a first edge side portion;
- and
- a second edge side portion;
- wherein one of the first and second edge side portions is steepened and the other one of the first and second side edge portions is not steepened.
A video signal comprising:
- an edge transient;
- an edge center defined by the edge transient;
- a first edge side portion;
- and
- a second edge side portion;
- wherein one of the first and second edge side portions is steepened and the other one of the first and second side edge portions is steepened differently than the one of the first and second edge side portions.
A video signal comprising:
- an edge transient;
- an edge center defined by the edge transient;
- a first edge side portion;
- and
- a second edge side portion;
- wherein the first and second edge side portions are asymmetrically steepened.
Dependencies are inferred from the claim text.