Image processing device and method

Abstract

The present disclosure relates to an image processing device and a method that enable easier encoding and decoding of a wider variety of images. The image processing device includes a setting unit that sets a parameter indicating a setting state of a coding tool required in specifying an extended profile that is an extension of a profile specified in a coding standard for performing encoding on each unit having a recursive hierarchical structure and an encoding unit that generates an encoded stream by encoding an image in accordance with the parameter set by the setting unit. The present disclosure can be applied to image processing devices that encode image data, for example.

1 . An image processing device, comprising
 an encoding unit configured to:
 encode an image based on a profile that supports a bit depth of up to 16 bits as opposed to a coding standard in which each coding unit, of the image, having a recursive hierarchical structure is encoded; and 
 generate an encoded stream based on the encoded image. 
   
     
     
         2 . The image processing device according to  claim 1 , wherein the encoding unit is further configured to encode the image based on the profile that supports an intra-coding coding tool. 
     
     
         3 . The image processing device according to  claim 2 , wherein the encoding unit is further configured to encode the image based on the profile that supports a 4:0:0 format. 
     
     
         4 . The image processing device according to  claim 3 , wherein
 the coding standard supports a plurality of profiles having chrominance formats of 4:2:0, 4:2:2, and 4:4:4, and   the plurality of profiles includes the profile.   
     
     
         5 . The image processing device according to  claim 2 , wherein
 the profile is identified based on general_intra_constraint_flag, and   the profile supports the intra-coding coding tool.   
     
     
         6 . The image processing device according to  claim 1 , wherein the profile that has a supported bit depth is identified based on at least one of:
 general_max_8bit_constraint_flag,   general_max_10bit_constraint_flag, and   general_max_12bit_constraint_flag.   
     
     
         7 . The image processing device according to  claim 4 , wherein the plurality of profiles, having supported chrominance formats, is identified based on at least one of:
 general_max_monochrome_constraint_flag,   general_max_420chroma_constraint_flag, and   general_max_422chroma_constraint_flag.   
     
     
         8 . The image processing device according to  claim 1 , wherein the coding standard is high efficiency video coding (HEVC) Range Extension, which is an extended standard of HEVC/H.265. 
     
     
         9 . An image processing method, comprising
 encoding an image based on a profile that supports a bit depth of up to 16 bits as opposed to a coding standard in which each coding unit, of the image, having a recursive hierarchical structure is encoded; and   generating an encoded stream based on the encoded image.   
     
     
         10 . An image processing device, comprising:
 a decoding unit configured to decode an encoded stream based on a profile that supports a bit depth of up to 16 bits as opposed to a coding standard, wherein
 the encoded stream corresponds to an image, 
 in the coding standard,
 each coding unit, of the image, having a recursive hierarchical structure is encoded, and 
 
 the encoded stream has been encoded based on the profile. 
   
     
     
         11 . The image processing device according to  claim 10 , wherein the decoding unit is further configured to decode the encoded stream based on the profile that supports an intra-coding coding tool. 
     
     
         12 . The image processing device according to  claim 11 , wherein the decoding unit is further configured to decode the encoded stream based on the profile that supports a 4:0:0 format. 
     
     
         13 . The image processing device according to  claim 12 , wherein
 the coding standard supports a plurality of profiles having chrominance formats of 4:2:0, 4:2:2, and 4:4:4, and   the plurality of profiles includes the profile.   
     
     
         14 . The image processing device according to  claim 11 , wherein the profile that supports the intra-coding coding tool is identified based on general_intra_constraint_flag. 
     
     
         15 . The image processing device according to  claim 10 , wherein the profile, having a supported bit depth, is identified based on at least one of:
 general_max_8bit_constraint_flag,   general_max_10bit_constraint_flag, and   general_max_12bit_constraint_flag.   
     
     
         16 . The image processing device according to  claim 13 , wherein the plurality of profiles, having supported chrominance formats, is identified based on at least one of:
 general_max_monochrome_constraint_flag,   general_max_420chroma_constraint_flag, and   general_max_422chroma_constraint_flag.   
     
     
         17 . The image processing device according to  claim 10 , wherein the coding standard is high efficiency video coding (HEVC) Range Extension, which is an extended standard of HEVC/H.265. 
     
     
         18 . An image processing method, comprising:
 decoding an encoded stream based on a profile supporting a bit depth of up to 16 bits as opposed to a coding standard, wherein
 the encoded stream corresponds to an image, 
 in the coding standard,
 each coding unit, of the image, having a recursive hierarchical structure is encoded, and 
 
 the encoded stream has been encoded based on the profile.