Intelligent color remapping of video data
AssigneeMarvell International Ltd.
InventorsSujith Srinivasan, Nikhil Balram
Life of this patent
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Abstract
The color remapping system places axes on the Cb-Cr color plane to differentiate and isolate colors of interest. Each axis has a programmable position, hue change value and saturation change value. Input pixels from the video data stream are calibrated with respect to the axes and enhanced based upon the two neighboring axes adjacent to the input pixels. The system can be reconfigured in real time by repositioning the axes and changing their hue and saturation change values. The system is easy to program and reconfigure and provides visually pleasing enhancements to the digital video.
Claims12
A method for processing an input color component of an image frame, comprising:
- mapping an input pixel into a color plane;
- determining positions of a plurality of color enhancement axes in the color plane, wherein each of the color enhancement axes is associated with a change factor;
- identifying a region in the color plane corresponding to the color component, wherein identifying the region comprises selecting at least two color enhancement axes for the color component;
- calculating a change factor for the color component based on an interpolation between the change factors of the selected color enhancement axes associated with the identified region;
- and
- adjusting the color of the color component based on the change factor for the color component.
A system for processing a color component of an input pixel of an image frame, comprising:
- a calibration unit that is configured to determine a local hue and a local saturation value in response to programming information and an input YUV pixel and to map the pixel into a color plane;
- and
- a color processing unit that is configured to:
- determine positions of a plurality of enhancement axes in the color plane, wherein each of the color enhancement axes is associated with a change factor,
- identify a region in the color plane corresponding to the color component, wherein identifying the region comprises selecting at least two color enhancement axes for the color component,
- calculate a change factor for the color component based on an interpolation between the change factors of the selected color enhancement axes associated with the identified region, and
- adjust the color of the color component based on the change factor for the color component.
A system for processing an input color component of an image frame, comprising:
- means for mapping an input pixel into a color plane;
- means for determining positions of a plurality of color enhancement axes in the color plane, wherein each of the color enhancement axes is associated with a change factor;
- means for identifying a region in the color plane corresponding to the color component, wherein identifying the region comprises selecting color enhancement axes for the color component;
- means for calculating a change factor for the color component based on an interpolation between the change factors of the selected color enhancement axes associated with the identified region;
- and
- means for adjusting the color of the color component based on the change factor for the color component.
Dependencies are inferred from the claim text.