Motion search apparatus for determining motion vector in accordance with motion vector of macro block neighboring object macro block

摘要

A search MB determination unit determines whether or not an object macro block is a macro block on which a motion search is carried out. A motion vector determination unit selects an optimal vector of a macro block determined not to carry out a motion search by the search MB determination unit from among neighboring macro blocks. Accordingly, it becomes possible, in comparison with a motion search apparatus that carries out a motion search on every macro block, to eliminate the amount of data to be operated required for the motion search while preventing image quality deterioration.