Method and apparatus for encoding/decoding a video using a motion compensation based on motion vector resolution information

An image encoding method performed by an encoding apparatus, the method comprising:

• deriving merge candidates of a current block;
• generating a merge candidate list of the current block based on the derived merge candidates;
• determining motion information of the current block based on the merge candidate list;
• generating a predicted block of the current block based on the motion information of the current block;
• generating information related to motion compensation;
• and
• encoding image information including the information related to the motion compensation,
• wherein the information related to the motion compensation includes motion vector resolution information,
• wherein the motion vector resolution information indicates a specific motion vector resolution among motion vector resolution candidates including an integer pel resolution, a ¼ pel resolution and a 1/16 pel resolution,
• wherein the motion vector resolution information is entropy encoded based on a context model, and
• wherein the motion vector resolution information is based on a truncated rice binarization.

A transmission method for image data, the method comprising:

• obtaining a bitstream of encoded image information, wherein the encoded image information is generated based on deriving merge candidates of a current block, generating a merge candidate list of the current block based on the derived merge candidates, determining motion information of the current block based on the merge candidate list, generating a predicted block of the current block based on the motion information of the current block, generating information related to motion compensation, and encoding image information including the information related to the motion compensation;
• and
• transmitting the image data comprising the bitstream,
• wherein the information related to the motion compensation includes motion vector resolution information,
• wherein the motion vector resolution information indicates a specific motion vector resolution among motion vector resolution candidates including an integer pel resolution, a ¼ pel resolution and a 1/16 pel resolution,
• wherein the motion vector resolution information is entropy encoded based on a context model, and
• wherein the motion vector resolution information is based on a truncated rice binarization.