Workflow for content creation and guided display management of EDR video

摘要

Video data with enhanced dynamic range (EDR) are color graded for a first and a second reference display with different dynamic range characteristics to generate a first color-graded output, a second color graded output, and associated first and second sets of metadata. The first color-graded output and the two sets of metadata are transmitted from an encoder to a decoder to be displayed on a target display which may be different than the second reference display. At the receiver, a decoder interpolates between the first and second set of metadata to generate a third set of metadata which drives the display management process for displaying the received video data onto the target display. The second set of metadata of metadata may be represented as delta metadata values from the first set of metadata values.

主权项

1. A method for guiding the display management of enhanced dynamic range (EDR) images in a video sequence, the method comprising, in a decoder:
receiving a first set of metadata for a first image color graded on a first reference video display; receiving a set of delta metadata for a second image color graded on a second reference video display, wherein the first and second images represent the same scene; generating a second set of metadata for the second image color graded on the second reference display, using the first set of metadata and the delta metadata; receiving image data for the first image; accessing a set of parameters for a target video display; interpolating a third set of metadata using the first set of metadata, the second set of metadata, and the parameters of the target display; and mapping the image data for the first image into the target display using the image data, the third set of metadata, and the parameters for the target display; wherein the method is performed by one or more computing devices.