1. A method for selecting a motion vector for a first image block of an image of an image sequence from a number of test vectors, to which respectively a significance measurement is assigned, wherein at least one of these test vectors is a motion vector of a second image block that is arranged temporally and/or spatially adjacent to the first image block, or a vector formed by modification of this motion vector, the method comprising the steps of: determining a distance measurement for each test vector, determining a modified distance measurement to each test vector depending on the distance measurement determined to the test vector and additionally at least on the significance measurement assigned to this test vector, selecting one of the test vectors as motion vector depending on the modified distance measurements, determining a new significance measurement of the test vector selected as motion vector depending on whether the selected motion vector meets at least one significance criterion, and assigning this new significance measurement as significance measurement to the motion vector for the selection of a motion vector for a third image block, wherein the motion vector of the first image block or a vector formed by modification of this motion vector is selected as test vector.