Bildbewegungsvektornachweisgerät

摘要

In a motion vector detecting apparatus, an input video signal is subsampled by a subsampling circuit, sampled data are Fourier-transformed by a discrete Fourier transform circuit to frequency area data, data for the previous frame, which is stored by a memory, data of the current frequency area are divided by a divider, a quotient is then inverse Fourier-transformed by an inverse discrete Fourier transform means and reflected to the real-time area, and, using the information from this real-time area, a first judging circuit determines whether there are any motion vectors, and if there are determines the magnitude and direction of the vectors.