| 摘要 |
The present disclosure relates to a decoding device, a decoding method, a coding device, and a coding method capable of improving coding efficiency of an image layered for each gamut. A gamut conversion unit converts a gamut of a decoded image of a base layer into a gamut of an enhancement layer. An adaptive offset unit performs a filter process on a predetermined band of the decoded image of the base layer subjected to the gamut conversion. An addition unit decodes a coded image of the enhancement layer using the decoded image of the base layer subjected to the filter process to generate a decoded image of the enhancement layer. The present disclosure can be applied to, for example, the decoding device. |
