| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To further efficiently execute encoding processing for a moving image which is high in image quality improvement effect. <P>SOLUTION: A code amount (Q<SB>ref</SB>) to be assigned to an I frame is determined corresponding to the number of skip macro blocks in a preceding prescribed frame in an image processor 1. Accordingly, high image quality of the I frame can be realized by increasing the code amount of the I frame with higher importance. As a result, the image quality of the succeeding P frame referring to the I frame can be improved. Further, a quantization parameter Q is appropriately corrected corresponding to the dispersion of quantization noise. Therefore, a proper quantization parameter Q is set corresponding to the encoding state of the moving image. The degradation of the image quality is suppressed while realizing the reduction of the code amount. In this way, the encoding processing for the moving image is more efficiently executed with high image quality improvement effect. <P>COPYRIGHT: (C)2005,JPO&NCIPI</p> |
