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。
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。
Those games saw a previously strident Arsenal pick up only one point.
那些比赛阿森纳仅拿到一分。
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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