METHOD FOR ENCODING AND DECODING MOVING VECTOR, ENCODER AND DECODER FOR MOVING VECTOR, AND RECORDING MEDIUM STORED WITH ENCODING AND DECODING PROGRAMS FOR MOVING VECTOR

摘要

Moving vector encoding and decoding methods reducing the amount of codes generated by a moving vector; moving vector encoder and decoder; and a recording medium stored with moving vector encoding and decoding programs. The moving vector of a block to be encoded is detected (step S1), a predicted error vector is calculated (step S2), the length component of the moving vector is calculated (step S3), converted to a variable length code (step S4), the length component is checked (step S5), the directional component is calculated when the length component is not 0 (step S6) and the encoding table of directional component is switched depending on the length component and the directional component is encoded (step S7).