Method for decoding immersive video and method for encoding immersive video

Abstract

A method of encoding an immersive video according to the present disclosure includes determining whether an input image is a first type, converting the input image into the first type when the input image is a second type different from the first type, encoding a converted image, and generating metadata for the encoded image.

1 . A method of encoding an immersive video, the method comprising:
 determining whether an input image is a first type;   converting the input image into the first type when the input image is a second type different from the first type;   encoding a converted image; and   generating metadata for the encoded image.   
     
     
         2 . The method of  claim 1 , wherein the metadata includes video type information for the encoded image. 
     
     
         3 . The method of  claim 1 , wherein:
 the encoded image is an image for a predetermined object, and   the metadata includes dynamic information representing a dynamic characteristic of the object.   
     
     
         4 . The method of  claim 3 , wherein the dynamic information indicates whether the object is in a static state or in a dynamic state within a predetermined period. 
     
     
         5 . The method of  claim 4 , wherein:
 the predetermined period is a service period of the encoded image, and   the metadata further includes duration information representing the service period.   
     
     
         6 . The method of  claim 4 , wherein:
 the predetermined period is represented in a unit of GOP (Group of Pictures), and   the dynamic information is encoded per the predetermined period within a service period of the encoded image.   
     
     
         7 . A method of decoding an immersive video, the method comprising:
 obtaining a plurality of bitstreams through demultiplexing;   decoding at least one of the plurality of bitstreams; and   rendering an immersive video based on a decoded image and decoded metadata,   wherein the metadata includes video type information representing whether the decoded image is a first type.   
     
     
         8 . The method of  claim 7 , wherein:
 the decoded image is an image for a predetermined object, and   the metadata includes dynamic information representing a dynamic characteristic of the object.   
     
     
         9 . The method of  claim 8 , wherein the dynamic information indicates whether the object is in a static state or in a dynamic state within a predetermined period. 
     
     
         10 . The method of  claim 9 , wherein:
 the predetermined period is a service period of the decoded image, and   the metadata further includes duration information representing the service period.   
     
     
         11 . The method of  claim 9 , wherein:
 the predetermined period is represented in a unit of GOP (Group of Pictures), and   the dynamic information is decoded per the predetermined period within a service period of the decoded image.   
     
     
         12 . The method of  claim 7 , wherein:
 each of the plurality of bitstreams includes data for a different object, and   the decoding is performed only for at least one bitstream corresponding to the object selected among a plurality of objects.