Feature encoding/decoding method and device based on inter-channel reference of encoding structure, recording medium in which bitstream is stored, and bitstream transmission method

A feature encoding method performed by a feature encoding apparatus, the feature encoding method comprising:

• determining a coding structure of a current channel in a feature map;
• obtaining a current block by splitting the current channel based on the coding structure;
• and
• encoding the current block,
• wherein the coding structure of the current channel is determined based on whether inter-channel reference referencing a coding structure of a previously encoded channel is applied to the current channel.

A method of transmitting a bitstream generated by a feature encoding method, the feature encoding method comprising:

• determining a coding structure of a current channel in a feature map;
• obtaining a current block by splitting the current channel based on the coding structure;
• and
• encoding the current block,
• wherein the coding structure of the current channel is determined based on whether inter-channel reference referencing a coding structure of a previously encoded channel is applied to the current channel.