Patent ID: 11928844
Assignee: PANASONIC INTELLECTUAL PROPERTY CORPORATION OF AMERICA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G

Claim 7:
8. The three-dimensional data decoding method according to claim 7, further comprising:
obtaining, from the bitstream, attribute information of each of the three-dimensional points and an attribute information flag indicating whether the attribute information of each of the three-dimensional points was encoded based on (i) a first attribute information encoding method of performing entropy encoding after performing transform processing of transforming a value of the attribute information using a predetermined method and (ii) a second attribute information encoding method of performing entropy encoding without performing the transform processing; and
decoding the encoded attribute information of each of the three-dimensional points based on a decoding method compatible with one of the first attribute information encoding method and the second attribute information encoding method, based on the attribute information flag,
wherein the attribute information flag:
indicates that the encoded attribute information of each of the three-dimensional points was encoded based on the first attribute information encoding method when the total number of the three-dimensional points is greater than or equal to the predetermined number; and
indicates that the encoded attribute information of each of the three-dimensional points was encoded based on the second attribute information encoding method when the total number of the three-dimensional points is less than the predetermined number.