METHOD FOR FINDING MOTION VECTOR

摘要

A method and apparatus for determining a motion vector in coding a moving picture, including determining a searching point having a minimum sum of absolute difference (SAD). A first predictive motion vector is determined by performing a N search on the basis of a predetermined pixel, determining a searching point having a minimum SAD as a second predictive motion vector by performing a 1 $\frac{N}{2^n}$ search on the basis of a predetermined pixel and determining a motion vector by comparing the first predictive motion vector and second predictive motion vector. This improves definition quality of moving pictures, since the motion vector can be determined rapidly and precisely.