Patent ID: 11887285
Assignee: KONINKLIJKE PHILIPS N.V.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 8:
9. A high dynamic range video encoder circuit comprising:
a dynamic range optimizer circuit, wherein the dynamic range optimizer circuit comprises a luma mapper and a range stretcher,
wherein the luma mapper is arranged to apply a first luma mapping to an input pixel luma of a an input image yielding an intermediate pixel luma, and
wherein the range stretcher is arranged to map the intermediate pixel luma to a zero when the intermediate pixel luma is equal to an offset yielding a first luma,

a gain limiter,
wherein the gain limiter is arranged to apply a second mapping on the input luma yielding a second luma,
wherein the gain limiter is arranged to determine an output luma of a pixel by selecting the larger one of the first luma and the second luma.