US 12,394,444 B2
Computing dynamic metadata for editing HDR content
Robin Atkins, Vancouver (CA)
Assigned to Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
Appl. No. 17/928,926
Filed by Dolby Laboratories Licensing Corporation, San Francisco, CA (US)
PCT Filed Jun. 2, 2021, PCT No. PCT/US2021/035402
§ 371(c)(1), (2) Date Nov. 30, 2022,
PCT Pub. No. WO2021/247670, PCT Pub. Date Dec. 9, 2021.
Claims priority of provisional application 63/034,006, filed on Jun. 3, 2020.
Claims priority of application No. 20178044 (EP), filed on Jun. 3, 2020.
Prior Publication US 2023/0230617 A1, Jul. 20, 2023
Int. Cl. G11B 27/031 (2006.01); G06T 5/70 (2024.01); H04N 7/01 (2006.01)
CPC G11B 27/031 (2013.01) [G06T 5/70 (2024.01); H04N 7/01 (2013.01); G06T 2207/10016 (2013.01)] 15 Claims
OG exemplary drawing
 
1. A method of editing video content, comprising:
receiving input video data in a first format;
converting the input video data to a predetermined format different than the first format of the input video data with respect to dynamic range, thereby to generate converted video data; and
generating a plurality of initial metadata values for a frame of the converted video data, wherein generating the plurality of initial metadata values comprises:
setting a first metadata value equal to a first fixed value wherein the first fixed value is a minimum allowable luminance value of the first format,
calculating a second metadata value equal to an average luminance value of the frame of the converted video data, and
setting a third metadata value equal to a second fixed value, wherein the second fixed value is a maximum allowable luminance value of the first format,
wherein the first metadata value, the second metadata value, and the third metadata value include information used by a decoder to render a decoded image on a display.