IMAGE ENCODING APPARATUS, IMAGE DECODING APPARATUS, IMAGE ENCODING METHOD, IMAGE DECODING METHOD, AND COMPUTER READABLE MEDIUM

摘要

An image encoding apparatus includes an image transformation unit which transforms an input image signal with a first resolution to a second image signal with a second resolution lower than the first resolution, a region acquisition unit which acquires an attention region of an image indicated by the input image signal, a region information output unit which outputs first region information indicating the attention region, a first encoding unit which acquires a partial region signal corresponding to the attention region from the input image signal and encodes the partial region signal to a first encoded signal, a second encoding unit which encodes the second image signal to a second encoded signal, and an output unit which outputs the second encoded signal and the first encoded signal.

主权项

1. An image encoding apparatus comprising:
an image transformation unit to receive a first image signal, which indicates an image, with a first resolution, transform the first image signal to a second image signal with a second resolution lower than the first resolution, and output the second image signal; a region acquisition unit to acquire a part of a region of the image as a partial region; a region information output unit to output first region information indicating the partial region; a first encoding unit to receive the first image signal and the first region information output by the region information output unit, acquire a signal corresponding to the partial region indicated by the first region information from the first image signal as a partial region signal, encode a partial region difference signal which is a difference between the acquired partial region signal and a signal of a region corresponding to the partial region of the second image signal, and output the encoded partial region difference signal as a first encoded signal; a second encoding unit to receive the second image signal output by the image transformation unit, encode the second image signal, and output the encoded second image signal as a second encoded signal; and an output unit to output an encoded signal including the second encoded signal output by the second encoding unit and the first encoded signal output by the first encoding unit.