The time that the beam remains on a given target pixel is called the dwell time.

离子束停留在一个指定点像素的时间叫做停留时间。

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According to the second-order difference of the consecutive pixels, the source pixel group is automatically selected to compute the corresponding target pixel gray value.

该算法以相邻像素的二阶差分为基础，自动选择与目标像素点相对应的源像素组进行插值运算。

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SUSAN algorithm is a new class of parallel boundary segmentation algorithm using the USAN principle, covered by the template target pixel to extract the statistical features.

SUSAN算法是一种新兴的并行边界类分割算法，采用USAN原理，通过对模板覆盖像素的统计来提取目标的特征。

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There are multiple ways to achieve this, depending on how your target audience, you can drop a pixel in your email with your birthday party invitation, put it on your social networking page that your friends visit, or in the special case of your husband, directly drop the pixel on the computer he uses the most (given you have access).

FORBES: How to Get That Diamond Ring on Your Anniversary! : Using First Party Data with Social Media for Display Ads.