This process of image processing of some geometric transformation, filtering, time-domain transform both airspace source, is a very good program, in the hope that useful to everybody!

这个程序对图像处理中的一些几何变换，滤波，空域时域变换都有源码，是个很好的程序，希望对大家有用！

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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。

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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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