| 摘要 |
<p>PURPOSE:To improve the efficiency of quantization by dynamically varying a representative vector corresponding to a motion vector, thereby quantizing a vector in an adaptive manner, and appropriately selecting the representative value of the quantization of a vector. CONSTITUTION:A quantum controlling line 3 from a motion vector measuring circuit 1 to a vector quantizing circuit 2 is newly added to a conventional system. In case of an actual inter-motion-correcting-frame prediction encoding device, a motion is measured as a motion vector in about twenty-five stages of accuracy by adding the factors of direction and velocity. Corresponding to respective stages, vector quantizing circuits VQ1, VQ2...VQn are provided. In such a case, the (n) is 25. A prediction error signal is lead to one of the twenty-five pieces of the said circuits by means of a motion vector Vk. The difference of the titled system from a conventional one is that, since many streaks are included in a picture against a certain motion vector, many pieces of pattern pertinent to the said fact are included as representative vectors.</p> |
