Image processing device and image processing method

An image processing method, comprising:

• an encoding step of encoding, by an image processing device, for a pair of opposite surfaces among a plurality of surfaces of a model for an omnidirectional image, a first composite image obtained by combining the omnidirectional image of a first surface of a first resolution and the omnidirectional image of a second surface of a second resolution lower than the first resolution and a second composite image obtained by combining the omnidirectional image of the second surface of the first resolution and the omnidirectional image of the first surface of the second resolution.

An image processing device, comprising:

• a decoding unit configured to decode, for a pair of opposite surfaces among a plurality of surfaces of a model for an omnidirectional image, an encoded stream obtained by combining the omnidirectional image of a first resolution of a surface corresponding to a line-of-sight direction of a user out of an encoded stream of a first composite image obtained by combining the omnidirectional image of a first surface of the first resolution and the omnidirectional image of a second surface of a second resolution lower than the first resolution and an encoded stream of a second composite image obtained by combining the omnidirectional image of the second surface of the first resolution and the omnidirectional image of the first surface of the second resolution.

An image processing method, comprising:

• a decoding step of decoding, by an image processing device, for a pair of opposite surfaces among a plurality of surfaces of a model for an omnidirectional image, an encoded stream obtained by combining the omnidirectional image of a first resolution of a surface corresponding to a line-of-sight direction of a user out of an encoded stream of a first composite image obtained by combining the omnidirectional image of a first surface of the first resolution and the omnidirectional image of a second surface of a second resolution lower than the first resolution and an encoded stream of a second composite image obtained by combining the omnidirectional image of the second surface of the first resolution and the omnidirectional image of the first surface of the second resolution.