| 摘要 |
<P>PROBLEM TO BE SOLVED: To control a target encoding amount according to the degree of deterioration in picture quality caused by block distortion and visual statistic information on a picture. <P>SOLUTION: An encoding unit 105 performs encoding in units of blocks comprising a plurality of pixels to generate encoded data. An encoding amount detection unit 107 detects the amount of encoded data of the picture generated by the encoding unit 105. An encoding distortion detection unit 104 calculates, as a picture distortion amount, the amount of distortion in a block boundary position between a picture obtained by decoding the encoded data and the picture before the encoding. A statistic information calculation unit 101 calculates statistic information on properties affecting the distortion of the block boundary position when a picture of interest is encoded from the picture of interest. Then a first picture target encoding amount calculation unit 103 generates encoding parameters of a picture following the picture of interest on the basis of a sequence target encoding amount, the amount of the encoded data, the statistic information, and the picture distortion amount, and sets them to the encoding unit 105. <P>COPYRIGHT: (C)2009,JPO&INPIT |
