Method and apparatus for multi view video encoding and decoding, and method for transmitting bitstream generated by the multi view video encoding method

A multi-view video decoding method, which is performed in a multi-view video decoding apparatus, the method comprising:

• acquiring a third bitstream, in which an atlas for the multi-view video is encoded, and a fourth bitstream in which packing information is encoded;
• generating the atlas by decoding the third bitstream;
• and
• generating the multi-view video based on the atlas and the packing information,
• wherein the atlas is divided based on a size of a packing tile, and
• wherein the size of the packing tile is determined based on a size of a basic view video of the multi-view video.

A multi-view video encoding apparatus comprising:

• a memory;
• and
• at least one processor,
• wherein the at least one processor is configured to:
• generate first bitstreams for each of a plurality of quantization parameters (QPs) different from each other by encoding an atlas divided into at least one sub-region in the quantization parameters,
• extract second bitstreams for the sub-region from the first bitstreams, and
• generate a third bitstream by merging, among the second bitstreams, second bitstreams with a predetermined bit rate,
• wherein the atlas is divided based on a size of a packing tile, and
• wherein the size of the packing tile is determined based on a size of a basic view video of the multi-view video.

A method for transmitting a bitstream generated by a multi-view video encoding method, the method comprising:

• generating first bitstreams for each of a plurality of quantization parameters (QPs) different from each other by encoding an atlas divided into at least one sub-region in the quantization parameters;
• extracting second bitstreams for the sub-region from the first bitstreams;
• and
• generating a third bitstream by merging, among the second bitstreams, second bitstreams with a predetermined bit rate,
• wherein the atlas is divided based on a size of a packing tile, and
• wherein the size of the packing tile is determined based on a size of a basic view video of the multi-view video.