Patent ID: 11928796
Assignee: INTERDIGITAL PATENT HOLDINGS, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 4:
5. A device comprising:
a processor configured to:
derive a pair of scaled chroma components by performing a chroma correction based on a chroma correction function for correcting chroma components representing the chroma of an input image according to a first component representing a mapping of a luminance component of said input image used for reducing or increasing the dynamic range of said luminance component, and a reconstructed component representing an inverse mapping of said first component;
obtain at least one correction factor according to said at least one of the pair of scaled chroma components;
wherein the at least one correction factor is a result of dividing at least one of the pair of scaled chroma components by a value; and
encode in a bitstream data comprising information representative of at least the pair of scaled chroma components and metadata used to convey an information data representative of said chroma correction function and said at least one correction factor.