Patent ID: 11908112
Assignee: ROKU, INC.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 14:
15. A non-transitory computer-readable medium having instructions stored thereon that, when executed by at least one computing device, cause the at least one computing device to perform operations for dynamic tone mapping of video content, the operations comprising:
receiving histogram data associated with a first video signal representing a video program, wherein the first video signal has a first dynamic range and static metadata describing one or more brightness characteristics of the video program, wherein the histogram data comprises color values for a plurality of frames in the first video signal outputted by a display device;
determining a cumulative histogram for a scene in the video program based on the histogram data;
determining a near-brightest pixel for the scene in the video program based on the cumulative histogram, wherein the near-brightest pixel is a representative pixel value that defines a maximum target brightness value for proper display of the scene;
modifying a tone mapping curve based on the near-brightest pixel and characteristics of the display device to generate a modified tone mapping curve; and
converting the first video signal based on the modified tone mapping curve to generate a second video signal having a second dynamic range that is less than the first dynamic range.