Step one is to pick up the control point set which determines the geometric position of images, and then to derive a geometric transform for registering one image to another from those points.

交互式数字图象的配准与镶嵌主要由二个步骤来完成：第一步是由人在显示屏幕上选择确定图像几何位置的控制点集，然后由此确定一幅图像几何变换使两幅图像在几何位置上配准。

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At one point at an elevation of about 5500 feet above sea level the students pick up dozens of marine fossils.

学生们在海拔约5500英尺高度的地方，采集到了几十种海底化石。

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Those games saw a previously strident Arsenal pick up only one point.

那些比赛阿森纳仅拿到一分。

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Let me just pick up on one point that Senator Kerry made -- I think people in Minnesota, and I think it will be this way with people around the country, and I think this is what Senator Lugar has been trying to say all along.

CNN: Senators Make Remarks After S.F.R.C. Meeting

So just to pick up on one point of perhaps disagreement, I would say that the thing that we need to be focused on, and I hope we will spend some serious time talking about it tonight is, what are the dynamics at work in this world?

CENTERFORSECURITYPOLICY: Gaffney debates on Hugh Hewitt show

The ideal picture would be one in which consumer demand neatly slackens just at the point that exports and investment pick up.

ECONOMIST: Consumer debt