| 摘要 |
<p>PROBLEM TO BE SOLVED: To encode, convert, decode, or reproduce hierarchical encoded data which is high in degree of freedom of setting of a region of interest, and easily converted into hierarchical encoded data corresponding to the region of interest.SOLUTION: A hierarchical image decoder is configured to decode encoded data of a higher layer included in hierarchically encoded data to restore an encoded picture of the higher layer, and includes a layer position decoding part which decodes layer position information. The layer position information includes layer group information for determining that a layer decoded picture is a partial region of a common screen, and in-screen layer position information for specifying which partial area of the common screen the layer decoded picture is.</p> |
