Scalable systems for controlling color management comprising varying levels of metadata

Abstract

Several embodiments of scalable image processing systems and methods are disclosed herein whereby color management processing of source image data to be displayed on a target display is changed according to varying levels of metadata.

1 . (canceled) 
     
     
         2 . A method for processing image data through metadata associated with the image data, said method comprising:
 receiving the image data as a bitstream at a destination device;   decoding the image data;   determining, by the destination device, if a first set of metadata associated with the image data is received, wherein the first set of metadata includes a representation of parameters of a reference display; and   determining, by the destination device, if a second set of metadata for video content characteristics of the image data is received, the second set of metadata including at least a maximum luminance level of the image data,   wherein the first set of metadata includes:
 a. a white point, represented as x, y chromaticity coordinates for the reference display, 
 b. three primaries, each represented as x, y chromaticity coordinates for the reference display, 
 c. a minimum luminance level for the reference display, and 
 d. a maximum luminance level for the reference display, and 
   wherein determining if the second set of metadata is received is independent of determining if the first set of metadata is received.   
     
     
         3 . The method of  claim 2 , wherein the first set of metadata and the second set of metadata are received in the bitstream. 
     
     
         4 . The method of  claim 3 , wherein the first set of metadata and the second set of metadata are separately partitioned in the bitstream. 
     
     
         5 . The method of  claim 2 , further comprising receiving, by the destination device, metadata characterizing ambient light conditions. 
     
     
         6 . An apparatus comprising:
 at least one non-transitory memory; and   a bitstream stored on the at least one non-transitory memory, the bitstream including a first set of metadata and a second set of metadata, wherein the first set of metadata and the second set of metadata are separately partitioned in the bitstream;   wherein the first set of metadata includes at least:
 a. a white point, represented as x, y chromaticity coordinates for a reference display, 
 b. three primaries, each represented as x, y chromaticity coordinates for the reference display, 
 c. a minimum luminance level for the reference display, and 
 d. a maximum luminance level for the reference display; 
   wherein the second set of metadata includes at least a maximum luminance level of the image data.