Patent ID: 9693075
Date: 2017-06-27
CPC Classifications: H04N

Claim:
1. A picture decoding device with a motion compensation prediction comprising: a candidate list construction unit configured to select a plurality of blocks each having one or two pieces of motion information containing at least information about a motion vector and information about a reference picture from a plurality of neighboring decoded blocks of a decoding target block and to construct a candidate list containing candidates of the motion information used for the motion compensation prediction from the motion information of the selected blocks; a first motion information deriving unit configured to derive from a first candidate contained in the candidates first motion information in a first direction; a second motion information deriving unit configured to derive from a second candidate different from the first candidate contained in the candidates second information in a second direction different from the first direction; and a selected candidate generator configured to generate a first new candidate of the motion information by combining the first motion information and the second motion information, wherein the first motion information deriving unit further derives from the second candidate third motion information in the first direction, the second motion information deriving unit further derives from the first candidate fourth motion information in the second direction, the selected candidate generator generates a second new candidate of the motion information by combining the third motion information and the fourth motion information, and the candidate list construction unit constructs the candidate list including at least one new candidate generated by the selected candidate generator such that the number of the candidates does not exceed a set maximum number.