IMAGE ENCODING METHOD, IMAGE DECODING METHOD, IMAGE ENCODING DEVICE, IMAGE DECODING DEVICE, IMAGE ENCODING PROGRAM, AND IMAGE DECODING PROGRAM

摘要

An image-encoding device uses a region having similar image signals in a block in each encoding target block as an object, and performs set-up by associating a pixel value representing the object with an object identifier as an object pixel value. An object map generation unit generates an object map indicating that each pixel in the block belongs to which object, using object identifiers. By use of the object map generation unit, a predicted image that is used by a predicted image generation unit to predict an encoding target block is generated. An object map encoding-unit compares an object map used when encoding a reference region that has been encoded and encodes an object map.