| 摘要 |
<p>A video coding apparatus (10) carries out a compression coding of input video data based on a result of predicting a motion vector predicted between frames of the video data. A quantization parameter control unit (18) comprised in the apparatus calculates a ratio of an accumulation value, in a small block, of a prediction error of a brightness component to an accumulation value, in the small block, of a prediction error of a color difference component at the time that a motion vector detection/compensation unit (11) carries out a motion compensation based on a prediction result of the motion vector for the small block designated in a frame of the above video data as a prediction accuracy indicator of the foregoing motion vector, and carries out a control of a quantization unit (14) executing a quantization of image data of the small block based on the prediction accuracy indicator.</p> |
