IMAGE DECODING DEVICE, AND IMAGE ENCODING DEVICE

摘要

The purpose of the present invention is to achieve an image encoding device and an image decoding device with which reference pixel positions in inter-layer image prediction can be accurately executed, even in cases when the colour format is a colour format other than 4:2:0. This hierarchical moving image decoding device (1) is provided with: a parameter set decoding unit (12) which decodes an enlarged-reference-layer offset syntax encoded in chrominance pixel units; and a prediction-image generation unit (1442) which derives a scale on the basis of the enlarged-reference-layer offset, i.e. the product of the enlarged-reference-layer offset syntax and the luminance/chrominance/size ratio of an object layer picture, and generates a prediction image.