提出并构建了八方向平滑和增强滤波器。
The eight-direction smoothing and enhancing filter are also proposed.
在第一次滤波的基础上计算频率场，最后针对每个分块区域进行自适应增强滤波。
The frequency field is calculated on the basis of first filter result. The adaptive filter is carried out to every block at last.
如谷物，一个个几个滤波器的照明和颜色的运用增强。
Few filters like grain, vignette lighting and color enhancement was applied.
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