By using the high frequency emphasis filtering instead of the high pass filtering, the image enhancement effectiveness is obviously improved.

该方法通过用高频加强滤波代替原算法的高通滤波，使增强效果得到了显著提高。

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Meanwhile, the modern emphasis on high-frequency trading (computers swapping shares with each other every millisecond) hardly contributes to shareholder engagement.

ECONOMIST: Why equity markets have forgotten their function