Information processing device and method

Abstract

The present disclosure relates to an information processing device and method for adaptively supplying data of partial images. The information processing device includes: a partial image information generation unit configured to generate partial image information which is information regarding each partial image which is a part of an entire image; and a metadata generation unit configured to generate metadata to be used for supply of a bit stream of the entire image and supply of a bit stream of the partial image using the partial image information generated by the partial image information generation unit. For example, the present disclosure can be applied to an information processing device that performs a process for adaptively supplying image data.

1 . An information processing device comprising:
 circuitry configured to
 acquire partial image information which is information regarding each partial image which is a part of an entire image, 
 select the partial image information corresponding to respective partial images of a plurality of partial images in mutually different sub-representations (Sub-Representation), and 
 acquire metadata, to be used for selection of a bit stream of the entire image and selection of a bit stream of the partial image including the partial image information regarding the respective partial images in mutually different sub-representations (Sub-Representation) belonging to one representation (Representation) belonging to one adaptation set (AdaptationSet) of the metadata, 
   wherein the partial image information includes positional information indicating a position of the partial image in the entire image, and selection of the bit stream of a desired partial image is made based upon the positional information.   
     
     
         2 . The information processing device according to  claim 1 ,
 wherein the positional information indicates a position of an upper left of the partial image.   
     
     
         3 . The information processing device according to  claim 1 ,
 wherein the partial image information regarding the plurality of partial images is stored in mutually different adaptation sets (AdaptationSet) of the metadata and the bit streams of the respective partial images are assigned to the mutually different adaptation sets.   
     
     
         4 . The information processing device according to  claim 1 ,
 wherein the partial image information regarding the plurality of partial images is stored in mutually different adaptation sets (AdaptationSet) of the metadata and a plurality of files for which one bit stream including the respective partial images is divided for each partial image are assigned to the mutually different adaptation sets.   
     
     
         5 . The information processing device according to  claim 1 ,
 wherein the circuitry is further configured to acquire information indicating that information regarding the bit stream is present under the sub-representation (Sub-Representation).   
     
     
         6 . The information processing device according to  claim 1 ,
 wherein each of the bit streams of the plurality of partial images is stored in a TRACK of one MP4 file.   
     
     
         7 . The information processing device according to  claim 7 ,
 wherein the circuitry is further configured to acquire information indicating a location of data of the one MP4 file.   
     
     
         8 . The information processing device according to  claim 1 ,
 wherein the partial image information includes information regarding a size of the entire image.   
     
     
         9 . The information processing device according to  claim 1 ,
 wherein the partial image information includes group identification information identifying a group to which the respective partial images belong and which is configured to be displayed as one image.   
     
     
         10 . The information processing device according to  claim 1 ,
 wherein the partial image is a tile (Tile) in high efficiency video coding (HEVC).   
     
     
         11 . The information processing device according to  claim 1 ,
 wherein the partial image information includes a view type (viewtype) indicating whether an image is the partial image.   
     
     
         12 . The information processing device according to  claim 1 ,
 wherein the circuitry is further configured to initiate reproduction of image data of at least one of the entire image or the partial image according to the selection of the bit stream.   
     
     
         13 . The information processing device according to  claim 1 ,
 wherein the circuitry is further configured to acquire image data of each partial image from image data of the entire image.   
     
     
         14 . The information processing device according to  claim 1 ,
 wherein the partial image information includes information indicating the number of partial images forming the entire image, identification information indicating that sizes of the partial images are equal, and information indicating a position and a size of each partial image when the sizes of the partial images are not equal.   
     
     
         15 . An information processing method comprising:
 acquiring partial image information which is information regarding each partial image which is a part of an entire image;   selecting the partial image information corresponding to respective partial images of a plurality of partial images in mutually different sub-representations (Sub-Representation); and   acquiring metadata, to be used for selection of a bit stream of the entire image and selection of a bit stream of the partial image including the partial image information regarding the respective partial images in mutually different sub-representations (Sub-Representation) belonging to one representation (Representation) belonging to one adaptation set (AdaptationSet) of the metadata,   wherein the partial image information includes positional information indicating a position of the partial image in the entire image, and selection of the bit stream of a desired partial image is made based upon the positional information.   
     
     
         16 . A non-transitory computer-readable storage medium having embodied there on a program, which when executed by a computer, causes the computer to execute a method, the method comprising:
 acquiring partial image information which is information regarding each partial image which is a part of an entire image;   selecting the partial image information corresponding to respective partial images of a plurality of partial images in mutually different sub-representations (Sub-Representation); and   acquiring metadata, to be used for selection of a bit stream of the entire image and selection of a bit stream of the partial image including the partial image information regarding the respective partial images in mutually different sub-representations (Sub-Representation) belonging to one representation (Representation) belonging to one adaptation set (AdaptationSet) of the metadata,   wherein the partial image information includes positional information indicating a position of the partial image in the entire image, and selection of the bit stream of a desired partial image is made based upon the positional information.