CPC H04N 19/103 (2014.11) [H04N 19/184 (2014.11); H04N 19/44 (2014.11); H04N 19/597 (2014.11)] | 4 Claims |
1. A three-dimensional data encoding method of encoding three-dimensional points, the three-dimensional data encoding method comprising:
(i) in a case in which a total number of second three-dimensional points available to calculate a predicted value of attribute information of a first three-dimensional point in one prediction mode selected from among two or more prediction modes is greater than a predetermined number corresponding to the one prediction mode selected, (a) calculating the predicted value according to the one prediction mode selected and (b) calculating a prediction residual that is a difference between the attribute information of the first three-dimensional point and the predicted value calculated;
(ii) in a case in which the total number is equal to or less than the predetermined number, not performing the calculation of the predicted value; and
generating a bitstream that includes the prediction residual.
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