这是比较两个图像（位图），以检查它们是否相同或有效的方法呢？

Which is the efficient way to compare two images (Bitmaps), to check if they are the same or not?

我一直在努力，记录了我和我读过，我需要重新大小两个图像左右16x16px，但我没有得到预期的结果。

I've tried to document me and I've read that I need to re-size both images to around 16x16px, but I don't get the expected result.

我试图用.Equals比较调整大小的图像：

I've tried to compare the resized images using .Equals:

    If img1.Equals(img2) then 
        msgbox("are equals!")
    End if

我见过的 AForge 图片库，但我无法找到任何方法中比较形象。

I've seen AForge image library but I can't found any method inside to compare Images.

有没有办法使用.NET类或第三方库没有硬codeA像素每个像素的图像比较器做一个有效的图像比较？如果不是，函数的任何一个例子来比较图像？

Is there way to do an efficient Image comparison using .NET classes or 3rd party libs without hardcode a pixel-per-pixel image comparer? If not, any example of a function to compare images?

推荐答案

您需要仔细考虑您的要求，什么平等的手段。如果你正在做一个直接的像素的像素比较，那么你可以找到无数的.NET图像类来帮助这个（我不是一个.NET专家，但尝试此处Image比较的图像之间的相似性的发现率）

You need to think carefully about your requirements and what equal means. If you are doing a direct pixel by pixel comparison, then you can find numerous .net image classes to help with this (I am not a .net expert but try here Image Comparison for find percentage of similarity between images )

当然，实现一个简单的直接图像的区别是相当容易的。你甚至可以允许有区别和其中的细微差别;门槛，这在上面的教程SO回答讨论。顺便说一下这个答案还提到SIFT，这是我没有意识到我已经提过之后。 SIFT是根据你的要求的好工具。

Of course implementing a simple direct image difference is fairly easy. You could even allow for slight differences with difference < threshold, which the tutorial in the above SO answer discusses. Incidentally this answer also mentions SIFT, which I did not realize until after I had mentioned it. SIFT is a good tool depending on your requirements.

在SIFT第三方工具是一个伟大的方式来比较，可以有细微变化的图像，但可能需要进行系统调用，因为我不知道，如果他们提供了一个.NET接口。权威网站SIFT实现： http://www.cs.ubc.ca/~罗威/关键点/

The SIFT 3rd party tool is a great way to compare images that can have slight variations, but you might have to make a system call as I am not sure if they provide a .net interface. The definitive website for SIFT implementation is: http://www.cs.ubc.ca/~lowe/keypoints/

我发现这个在互联网上： HTTP：//www.nowozin .NET /塞巴斯蒂安/ TU-柏林-2006 / libsift / 号称是C＃实现。

I did find this on the internet: http://www.nowozin.net/sebastian/tu-berlin-2006/libsift/ which claims to be a c# implementation.