| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To improve image quality even if an image with active motion is inputted. <P>SOLUTION: A quantization parameter control unit 11 sets a quantization parameter and generates threshold information Th1 and Th2. A generated code measuring part 12 encodes quantization data by the quantization parameter, and measures an amount of a generated code per 1 picture. A generated code amount monitor 13 monitors the amount of the code generated from the amount of the generated code and the buffer state information inputted from a VBV buffer 16, while outputting the coded data containing current occurrence information amounts. A resolution determination part 14 determines a next resolution process based on the occurrence information amount Th1 and Th2, and a current resolution process state. It outputs the coded data of normal code amount to the VBV buffer at a normal resolution, and outputs the coded data containing a conversion code amount to a resolution converter 15 at a low resolution. The resolution converter performs a reduction process of 1 picture of the coded data based on the conversion code amount. <P>COPYRIGHT: (C)2006,JPO&NCIPI</p> |
