ENCODING DEVICE, DECODING DEVICE, AND IMAGE PROCESSING DEVICE

摘要

According to an embodiment, an encoding device includes a determination unit, a first palette generator, a first assignment unit, an encoder, and a first reference generator. The determination unit is configured to determine an additional palette that holds a color not included in a reference palette among colors included in a predetermined operation unit of an input image. The first palette generator is configured to generate a palette for encoding including a color included in the additional palette and a color included in the reference palette. The first assignment unit is configured to assign, to each pixel in the operation unit, an index indicating a color in the palette for encoding corresponding to a color of the pixel. The encoder is configured to encode the index and information on the additional palette. The first reference generator is configured to generate the reference palette from the palette for encoding.

主权项

1. An encoding device comprising:
a determination unit configured to determine an additional palette that holds a color not included in a first reference palette among colors included in a predetermined operation unit of an input image; a first palette generator configured to generate a palette for encoding including a color included in the additional palette and a color included in the first reference palette; a first assignment unit configured to assign, to each pixel in the operation unit, an index indicating a color in the palette for encoding corresponding to a color of the pixel; an encoder configured to encode the index and information on the additional palette; and a first reference generator configured to generate the first reference palette from the palette for encoding.