| 摘要 |
PROBLEM TO BE SOLVED: To provide a motion vector detector by which a motion vector in the unit of macro blocks and a motion vector in the unit of sub-blocks are obtained with a simpler configuration. SOLUTION: This detector is provided with a plurality of sub-block summing circuits 102a-102d that sum difference absolute values of each picture element obtained by a difference absolute value calculation circuit 101 for each sub- block, a macro block summing circuit 103 that sums the result of sum further, a minimum value decision/motion vector generating circuit 104 to obtain a motion vector based on the calculation result by any summing means, and a control circuit 107 that controls which calculation result is to be used. The difference absolute value for each picture element calculated by the difference absolute value calculation circuit 101 is used to obtain a motion vector in the unit of macro blocks and a motion vector in the unit of sub-blocks so as to eliminate the need for providing separately the difference absolute value calculation circuit 101 to obtain both the motion vectors. |
