透视图像畸变 [英] Perspective Image Distortion

问题描述

我的工作中的应用目前要求为视角图像畸变的功能。基本上我想要做的就是让用户将图像加载到应用程序并调整其​​基于4角点，他们可以指定透视图的属性。

The application I am working on currently requires functionality for Perspective Image Distortion. Basically what I want to do is to allow users to load an image into the application and adjust its perspective view properties based on 4 corner points that they can specify.

我看了一下ImageMagic。它有一定的扭曲与角度探讨调节功能，但非常缓慢，一定的投入是给不正确的输出。

I had a look at ImageMagic. It has some distort functions with perpective adjustment but is very slow and some certain inputs are giving incorrect outputs.

任何你们使用的任何其他库或算法。我编码在C＃。

Any of you guys used any other library or algorithm. I am coding in C#.

任何指针将是非常美联社preciated。

Any pointers would be much appreciated.

感谢

推荐答案

这似乎正是你（我）正在寻找： <一href="http://www.$c$cproject.com/KB/graphics/YLScsFreeTransform.aspx">http://www.$c$cproject.com/KB/graphics/YLScsFreeTransform.aspx

This seems to be exactly what you (and I) were looking for: http://www.codeproject.com/KB/graphics/YLScsFreeTransform.aspx

这将拍摄图像，并使用您提供4 X / Y坐标扭曲了。

It will take an image and distort it using 4 X/Y coordinates you provide.

快速，免费，简单code。经过测试，它精美的作品。只需从该链接下载code，然后用FreeTransform.cs是这样的：

Fast, free, simple code. Tested and it works beautifully. Simply download the code from the link, then use FreeTransform.cs like this:

using (System.Drawing.Bitmap sourceImg = new System.Drawing.Bitmap(@"c:\image.jpg")) 
{ 
    YLScsDrawing.Imaging.Filters.FreeTransform filter = new YLScsDrawing.Imaging.Filters.FreeTransform(); 
    filter.Bitmap = sourceImg;
    // assign FourCorners (the four X/Y coords) of the new perspective shape
    filter.FourCorners = new System.Drawing.PointF[] { new System.Drawing.PointF(0, 0), new System.Drawing.PointF(300, 50), new System.Drawing.PointF(300, 411), new System.Drawing.PointF(0, 461)}; 
    filter.IsBilinearInterpolation = true; // optional for higher quality
    using (System.Drawing.Bitmap perspectiveImg = filter.Bitmap) 
    {
        // perspectiveImg contains your completed image. save the image or do whatever.
    } 
} 

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