Patent Document ID: 20140105288
Application ID: 14109444
Patent Status: 0

Claim One:
1. An image decoding device for decoding encoded data so as to form a decoded image, comprising: a decoder configured to decode, from the encoded data, (i) an encode parameter including prediction mode information and (ii) prediction residual data; a first selector configured to select, from a prediction set group, one prediction set to be used with respect to each target block to be intra-predicted, the prediction set group including, as a plurality of prediction mode candidates, a plurality of prediction modes corresponding to respective direction predictions; a second selector configured to select one prediction mode from the plurality of prediction mode candidates included in the prediction set selected by the first selector; a predictor configured to form, on the basis of the prediction mode thus selected, a predicted image of the each target block to be intra-predicted; and an adder configured to form a decoded image of the each target block to be intra-predicted by adding the predicted image formed by the prediction section and the prediction residual data obtained by decoding the encoded data.