Method for deriving motion vector, and electronic device

An electronic device, comprising a memory, a processor and a computer program stored in the memory and executable by the processor, wherein when the computer program is executed by the processor the processor is caused to implement a method for deriving motion vector, including following steps of:

• obtaining a space domain motion vector prediction and a time domain motion vector prediction of adjacent blocks of a coding unit in a predetermined direction;
• performing a filtering operation on the space domain motion vector and the time domain motion vector prediction to obtain the space domain motion vector prediction and the time domain motion vector prediction of the filtered adjacent blocks;
• determining, according to a predetermined inter-frame prediction mode, reference motion vectors of a current block in four side directions by using the space domain motion vector prediction and the time domain motion vector prediction of the filtered adjacent blocks and a coordinate position of the current block in the coding unit;
• and
• deriving motion vectors of the current block according to the reference motion vectors and the coordinate position of the current block in the coding unit.