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US 2016/0080716 A1Published application
Graphics Blending for High Dynamic Range Video
AssigneeDolby Laboratories Licensing Corporation
InventorsRobin Atkins, Eldon Lee Rivers
Life of this patent
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Abstract
A method and system for merging graphics and high dynamic range video data is disclosed. In a video receiver, if needed, video and graphics are translated first into the IPT-PQ color space. A display management process uses metadata to map the input video data and the graphics from their own color volume space into a target blending color volume space by taking into consideration the color volume space of the target display.
Claims14
In a video receiver, a method for blending graphics data, the method comprising:
- receiving input graphics data at a graphics dynamic range;
- receiving an input video signal at a video dynamic range, wherein the video dynamic range is higher than the graphics dynamic range;
- determining a target display dynamic range;
- determining a relationship between the target display dynamic range and the graphics dynamic range or between the target display dynamic range and the video dynamic range, wherein upon determining that the target display dynamic range is higher than the graphics dynamic range but lower than the video dynamic range:
- applying a receiver display management process to the input graphics data to generate mapped graphics data, wherein the display management process maps the input graphics data from the target display dynamic range to the video dynamic range;
- blending the mapped graphics data with the input video signal to generate a composite video signal at the video dynamic range;
- and
- outputting the composite video signal.
5 more elements
Dependencies are inferred from the claim text.