IMAGE DECODING DEVICE, IMAGE DECODING METHOD, AND IMAGE ENCODING DEVICE

摘要

PROBLEM TO BE SOLVED: To provide an efficient encoding/decoding process that reduces a code amount when using asymmetric partition and takes advantage of the properties of the asymmetric partition.SOLUTION: In an image decoding device, a PU information decoding unit is provided with a motion compensation parameter derivation unit that derives a motion compensation parameter that indicates a prediction scheme namely either unidirectional or bidirectional prediction. If the size of prediction units is less than or equal to a prescribed size, the motion compensation parameter derivation unit switches prediction schemes and derives the motion compensation parameter.SELECTED DRAWING: Figure 12