Color gamut mapper for dynamic range conversion and methods for use therewith
AssigneeViXS Systems, Inc.
InventorsYing Liu, Xinghai Li, Jie Feng
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Abstract
In various embodiments, a color gamut mapper includes a gamut map selection generator configured to analyze color space signals and generate a gamut map selection signal in response thereto. A color gamut transformer is configured to process the color space signals via a selected one of a plurality of gamut maps to generate gamut mapped color space signals, wherein the selected one of the plurality of gamut maps is selected in response to the gamut map selection signal. Other embodiments are disclosed.
Claims20
A reconfigurable dynamic range converter comprising:
- a color space converter to receive a source video and convert source color space signals of the source video to non-linear color space signals;
- a reconfigurable linearizer to receive configuration data and convert the non-linear color space signals to linearized color space signals, the reconfigurable linearizer including at least one reconfigurable look-up table used for converting the non-linear color space signal that is reconfigured based on the configuration data for a particular conversion process identified in the configuration data;
- and
- a reconfigurable color volume transformer to receive the configuration data, dynamic color transform metadata and the linearized color space signals and generate adjusted linearized color space signals based on the dynamic color transform metadata, the reconfigurable color volume transformer including a reconfigurable tone mapper, the reconfigurable tone mapper having at least one reconfigurable look-up table, wherein the at least one reconfigurable look-up table of the tone mapper is reconfigured based on the configuration data for the particular conversion process.
A method for reconfiguring a dynamic range converter based on configuration data, comprising:
- receiving a video signal having the configuration data and dynamic color transform metadata related to the video signal, the configuration data indicating a particular conversion process;
- converting source color space signals of the video signal to non-linear color space signals;
- reconfiguring a look-up table of a reconfigurable linearizer based on the configuration data;converting the non-linear color space signals to linearized color space signals based on the look-up table of the reconfigurable linearizer;
- reconfiguring a look-up table of a tone mapper of a reconfigurable color volume transformer based on the configuration data;
- and generating adjusted linearized color space signals based on the dynamic color transform metadata and the reconfigured look-up table of the tone mapper.
Dependencies are inferred from the claim text.