| 摘要 |
<p>Determining whether AC component prediction is effective or not based on the sum of absolute values of unpredicted AC components ( SIGMA mS0) before calculating prediction error S in the AC components. If SIGMA mS0 is smaller than a predetermined threshold &thetas;1, it is determined that the prediction will be ineffective. In this case, the unpredicted AC components are encoded directly without calculating the prediction error S. <IMAGE></p> |
