Encoding device and encoding method, and decoding device and decoding method

An encoding method using an encoding device, the encoding method comprising:

• a setting step of setting first image specifying information specifying a first image of a viewpoint present in a first direction from a viewpoint of a current coding image and second image specifying information specifying a second image of a viewpoint present in a second direction opposite to the first direction in a first reference list in first order and setting the first image specifying information and the second image specifying information in a second reference list in second order that is different from the first order;
• and
• a coding step of generating coded data by coding the current coding image based on the first reference list and the second reference list set in the setting step of the first image specifying information and the second image specifying information.

A decoding device comprising:

• a setting unit that sets first image specifying information specifying a first image of a viewpoint present in a first direction from a viewpoint of a current decoding image and second image specifying information specifying a second image of a viewpoint present in a second direction opposite to the first direction in a first reference list in first order and sets the first image specifying information and the second image specifying information in a second reference list in second order that is different from the first order;
• and
• a decoding unit that decodes coded data of the current decoding image based on the first reference list and the second reference list set by the setting unit.

A decoding method using a decoding device, the decoding method comprising:

• a setting step of setting first image specifying information specifying a first image of a viewpoint present in a first direction from a viewpoint of a current decoding image and second image specifying information specifying a second image of a viewpoint present in a second direction opposite to the first direction in a first reference list in first order and setting the first image specifying information and the second image specifying information in a second reference list in second order that is different from the first order;
• and
• a decoding step of decoding coded data of the current decoding image based on the first reference list and the second reference list set in the setting step of the first image specifying information and the second image specifying information.