.NET中的非仿射图像转换 [英] Non-Affine image transformations in .NET

问题描述

有没有.NET类库中的任何类，方法或者一般的算法都可以执行非仿射转换？ （即不仅仅涉及旋转，缩放，平移和剪切的转换）

例如：

alt text http://i43.tinypic.com/2qlcyup.jpg

alt text http：// www.last100.com/wp-content/uploads/2008/01/iphone-maps.jpg

---

是否有另一个术语用于非仿射转换？

解决方案

您发布的所有示例图像都可以通过四边形失真完成。虽然我无法确定四倍变形将覆盖所有非仿射变换。

继承人是C＃中不太好的实现的链接...它起作用，但速度很慢。对维基百科进行各种不同的优化可用于这些计算

http://www.vcskicks.com/image-distortion.html

--eil

Are there any classes, methods in the .NET library, or any algorithms in general, to perform non-affine transformations? (i.e. transformations that involve more than just rotation, scale, translation and shear)

e.g.:

alt text http://i43.tinypic.com/2qlcyup.jpg

alt text http://www.last100.com/wp-content/uploads/2008/01/iphone-maps.jpg

---

Is there another term for non-affine transformations?

解决方案

All of the example images you posted can be done with a Quadrilateral Distortion. Though I cant say for certain that a quad distort will cover ALL non affine transforms.

Heres a link to a not so good implementation of it in C#... it works, but is slow. Poke around Wikipedia for the many different optimizations available for these kinds of calculations

http://www.vcskicks.com/image-distortion.html

-Neil

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