The image watermark scheme based on Scale Invariant feature Transform (SIFT) feature is proposed for resisting geometric attacks.
提出一种利用尺度不变特征变换(SIFT)特征点实现对抗几何攻击的水印方案。
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。
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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