IMAGE DECODING DEVICE, IMAGE CODING DEVICE, AND CODED DATA

摘要

An image decoding device which can extract an independent layer without rewriting of syntax and cause a non-scalable decoder to reproduce the extracted is realized. An image decoding device (1) includes a NAL-unit header decoding unit (211) that decodes a layer ID of an SPS, a dependency layer information decoding unit (2101) that decodes dependency layer information, and a profile level information decoding unit (2102) that decodes profile level information from a VPS. The decoding unit (2102) decodes the profile level information also from the SPS in a case where, it is determined that a layer indicated by the layer ID is an independent layer, based on the dependency layer information.

主权项

1. An image decoding device which decodes image data subjected to scalable coding, the device comprising:
circuitry that decodes a first flag in a unit of a layer; and decodes slice_pic_order_cnt_lsb as one type of POC information, wherein the circuitry decodes the slice_pic_order_cnt_lsb from a slice header in a case where the first flag indicates a first value and a layer ID is greater than 0, or in a case where a NAL unit type does not indicate an IDR picture, and does not decode the slice_pic_order_cnt_lsb in other cases.