| 1. | This method embarked from the practical application characteristic , carried on first the rank arrangement to multiple roi , and filtered the high frequency component that the background region outside the roi thus reduced the jpeg2000 code operand , reduced the production symbol stream code time 该方法从实际应用的特点出发,对多个roi进行优先级别的排列,对roi外的背景区域进行高频分量滤除,从而减少了jpeg2000编码的运算量,减少了生成码流的编码时间。 |