| 摘要 |
<p>The invention relates to an image coding apparatus which can improve the picture quality of an image. A quantization index arithmetic operation section 42 calculates, based on motion vector residuals of macro block and the sum total of the motion vector residual outputted from a motion vector residual buffer section 72, a weighted average of the motion vector residual. The quantization index arithmetic operation section 42 calculates, based on the value of activity of the macro block and the sum total of the activity outputted from an activity buffer section 73, a weighted average of the activity. The quantization index arithmetic operation section 42 calculates a quantization index based on the weighted average of the vector residual or the weighted average of the activity. The present invention can be applied to an image coding apparatus of the MPEG system. <IMAGE></p> |
