Image signal decoding apparatus

An image signal decoding apparatus for decoding a transmitted image information signal into an original image signal, comprising:

• decision means for dividing a picture image signal comprising a plurality of image signals into a plurality of blocks each comprising a plurality of image signals, receiving a block characteristic information signal and a coded information signal on a block unit basis, said block characteristic information signal representing the characteristic of a block and said coded information signal being obtained by high-efficiency coding of a plurality of image signals constituting each of said plurality of divided blocks in accordance with said block characteristic information signal, and deciding if the image signals of the block can be decoded or not in accordance with said received block characteristic information signal and coded information signal of the block;
• motion decision means for deciding if there is motion of picture image represented by the image signals of the block, in accordance with said block characteristic information signal among said block characteristic information signal and coded information signal received on the block unit basis;
• and
• interpolation means for selecting, in accordance with the decision result provided by said motion decision means, either the image signals in another block included in the same picture image as that in which the block which was decided by said decision means as being incapable of being decoded into original image signals is included, or the image signals of another block which is included in a picture image distinct from that in which said block decided as being incapable of being decoded is included, and is located in a position corresponding to said block decided as incapable of being decoded and interpolating said selected image signals as interpolation image signals.