Patent ID: 7349475
Filing Date: 2008-03-25
Classification: H04N

Abstract:
1. A motion vector detection method of detecting a motion vector between a m-th frame (m is an integer) and a (m+n)-th frame (n is an integer not less than i+1 and i is an integer not less than 1), the method comprising: extracting a first block from a motion vector search area of the m-th frame; extracting a plurality of second blocks in order of decreasing correlation with respect to the first block from a motion vector search area of the (m+n)-th frame; detecting a plurality of first motion vectors between the first block and the plurality of second blocks; extracting, from a (m+i)-th frame, a third block that is located in spatially the same position as that of the first block; computing a plurality of second motion vectors that are (n−1)/n times the first motion vectors; extracting, from the (m+n)-th frame, a plurality of fourth blocks corresponding to movement positions of the third block according to the second motion vectors; selecting, from the plurality of first motion vectors, an optimum motion vector corresponding to a maximum correlation of correlations among the third block and the fourth blocks; and outputting the selected optimum motion vector to generate an interpolation image.