Image encoding/decoding apparatus and method

An image encoding method comprising:

• predicting a motion vector of a current block within a current picture using any one or any combination of motion vector information of an adjacent block of the current block, motion vector information of a reference block corresponding to the current block within a reference picture, and motion vector information of an adjacent block of the reference block corresponding to the current block within the reference picture;
• scaling the motion vector information of the adjacent block of the current block using a distance from a reference picture referred to by the adjacent block of the current block to the current picture and a distance from a reference picture of the current block to the current picture in response to the reference picture referred to by the adjacent block of the current block being different from the reference picture of the current block;
• and
• determining differential motion vector information of the current block based on the predicted motion vector of the current block and a motion vector of the current block,
• wherein a location of the reference block within the reference picture corresponds to a location of the current block within the current picture.

A non-transitory computer-readable medium storing a bitstream, wherein the bitstream is generated by an image encoding method, the method comprising:

• predicting a motion vector of a current block within a current picture using any one or any combination of motion vector information of an adjacent block of the current block, motion vector information of a reference block corresponding to the current block within a reference picture, and motion vector information of an adjacent block of the reference block corresponding to the current block within the reference picture;
• scaling the motion vector information of the adjacent block of the current block using a distance from a reference picture referred to by the adjacent block of the current block to the current picture and a distance from a reference picture of the current block to the current picture in response to the reference picture referred to by the adjacent block of the current block being different from the reference picture of the current block;
• and
• determining differential motion vector information of the current block based on the predicted motion vector of the current block and a motion vector of the current block,
• wherein a location of the reference block within the reference picture corresponds to a location of the current block within the current picture.