你对肖像照中的软失焦背景处理是对的，大多数情形下这是突出主体，并避免多余背景干扰的好方法。

You're right about the soft blurry backgrounds in portraits - in most cases they are a great way to highlight your main subject and get rid of any distractions in the background.

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结果表明，随着距离的增大，背景杂光的影响变得非常严重，而减背景处理可以相当有效地使这种影响大大减小。

It is shown that the effect of the background on the fluorescence signal increases obviously as the probe distance and can be remitted unambiguously by the background subtraction treatment.

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首先，针对复杂多变的背景，提出了基于帧间差分和背景建模的背景处理算法，达到了抑制背景、增强目标的效果。

Firstly, a background processing algorithm based on inter-frame difference and background modeling is proposed, which has achieved effects of background suppression and target enhancement.

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So just as we had to escape things with backslashes in an awkward way, same deal with percent in this context.

所以就像我们采用笨拙的方式来用反斜杠来避免一些东西,在这个背景下对百分号做相同的处理。

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