IMAGE DECODING METHOD, IMAGE ENCODING METHOD, IMAGE DECODING DEVICE, IMAGE ENCODING DEVICE, AND IMAGE ENCODING/DECODING DEVICE.

摘要

　An image decoding method according to one embodiment of the present invention comprises a context control step (S204) in which a context to be used for a block to be processed is determined from a plurality of contexts. In the context control step (S204), if the signal classification of a control parameter is a second type, the context is determined using a condition whereby the control parameter of an upper block is not employed (S207). The second type is: "merge_flag"; "ref_idx_l0" or "ref_idx_l1"; "inter_pred_flag"; "mvd_l0" or "mvd_l1"; "no_residual_data_flag"; "intra_chroma_pred_mode"; and "cbf_luma", "cbf_cb", or "cbf_cr".