而图像编辑器将消耗并生成像素，对每个像素或每组像素应用规则从而锐化图像或形成某种风格。
And an image editor consumes and emits pixels, applying rules to each pixel or groups of pixels to, say, sharpen or stylize an image.
首先采用反锐化滤波器对血管造影图像进行对比度调整，然后通过频域高通滤波去除背景中的一致性成分。
We first employed the unsharp masking to adjust the contrast of angiograms, and then removed the consistent component of low frequency in frequency domain by high-pass filtering.
文章还提出了多种矢量水听器指向性锐化的方法，通过这些方法在低频形成恒定束宽窄指向性。
Several methods of sharp a narrow beamwidth is presented and used to form a narrow directivity.
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