blocks|key|1996311|text|RoboRealm编写了一个庞大的视觉列表软件。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1996312|这个老问题提到了很多库。|1996313|entityMap|0|LINK|mutability|MUTABLE|url|http://www.roborealm.com/links/vision_software.php|1|https://stackoverflow.com/questions/158756/what-is-the-best-image-manipulation-library/647637#647637^0|J|2|0|0|0|5|1|0^^$0|@$1|2|3|4|5|6|7|P|8|@]|9|@$A|Q|B|R|1|S]]|C|$]]|$1|D|3|E|5|6|7|T|8|@]|9|@$A|U|B|V|1|W]]|C|$]]|$1|F|3|-4|5|6|7|X|8|@]|9|@]|C|$]]]|G|$H|$5|I|J|K|C|$L|M]]|N|$5|I|J|K|C|$L|O]]]]

RoboRealm compiled a huge <a href="http://www.roborealm.com/links/vision_software.php" rel="nofollow noreferrer">list</a> of vision software.

<a href="https://stackoverflow.com/questions/158756/what-is-the-best-image-manipulation-library/647637#647637">This older question</a> mentions lots of libraries.

blocks|key|764476|text|您使用的是哪种语言？VLFeat对于C%2B%2B+(并积极维护)来说似乎是一种很好的语言，尽管我还没有真正使用它。我主要熟悉SIFT+--在维基百科文章底部列出了许多实现。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|764477|entityMap|0|LINK|mutability|MUTABLE|url|http://www.vlfeat.org/|1|http://en.wikipedia.org/wiki/Scale-invariant_feature_transform#Implementations^0|A|6|0|1V|6|1|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@$A|O|B|P|1|Q]|$A|R|B|S|1|T]]|C|$]]|$1|D|3|-4|5|6|7|U|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]|L|$5|G|H|I|C|$J|M]]]]

What language are you using? <a href="http://www.vlfeat.org/" rel="nofollow noreferrer">VLFeat</a> seems like a pretty good one for C++ (and actively maintained), though I haven't actually used it. I'm mainly familiar with SIFT - there's a number of implementations listed at the bottom of the <a href="http://en.wikipedia.org/wiki/Scale-invariant_feature_transform#Implementations" rel="nofollow noreferrer">Wikipedia article</a>.

blocks|key|764505|text|libCVD+http://savannah.nongnu.org/projects/libcvd|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|764506|剑桥视频动力学-图书馆的图像，视频捕捉，显示，计算机视觉等。与TooN的线性代数框架很好地集成。语言:+C%2B%2B|764507|这是积极开发的，并有许多有用的特性和算法，通常这些家伙使事情变得非常快。|764508|是LGPL。|764509|可以在Win、Linux和MacOS+X上编译它。|764510|还打算为Python提供这个端口，以便能够非常快地用Python和SciPy构建计算机视觉算法的原型(我不知道现在是在哪个阶段，但在Python会议上有一篇关于它的论文)。|764511|如果你想实时做任何事情，你应该认真考虑libCVD。|764512|例如，Georg的PTAM+(并行跟踪和映射)框架使用了这个库。|764513|entityMap|0|LINK|mutability|MUTABLE|url|http://savannah.nongnu.org/projects/libcvd^0|7|16|0|0|0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Z|8|@]|9|@$A|10|B|11|1|12]]|C|$]]|$1|D|3|E|5|6|7|13|8|@]|9|@]|C|$]]|$1|F|3|G|5|6|7|14|8|@]|9|@]|C|$]]|$1|H|3|I|5|6|7|15|8|@]|9|@]|C|$]]|$1|J|3|K|5|6|7|16|8|@]|9|@]|C|$]]|$1|L|3|M|5|6|7|17|8|@]|9|@]|C|$]]|$1|N|3|O|5|6|7|18|8|@]|9|@]|C|$]]|$1|P|3|Q|5|6|7|19|8|@]|9|@]|C|$]]|$1|R|3|-4|5|6|7|1A|8|@]|9|@]|C|$]]]|S|$T|$5|U|V|W|C|$X|Y]]]]

libCVD <a href="http://savannah.nongnu.org/projects/libcvd" rel="nofollow noreferrer">http://savannah.nongnu.org/projects/libcvd</a>

Cambridge Video Dynamics - Library for images, video capture, display, computer vision and more. Integrates well with TooN for a linear algebra framework. Language: C++

This is actively developed, and has a lot of useful features and algorithms, and generally those guys make things to work very fast.

It is LGPL.

It is possible to compile it on Win, Linux and MacOS X.

There is also an intention to provide port for Python with this one, to allow
to prototype Computer Vision algorithms with Python and SciPy very fast (i am not sure at which stage it is now, but there was a paper about it in a Python conference.)

If you are trying to do anything in real-time you should seriously consider libCVD.

For example, 
PTAM (Parallel Tracking And Mapping) framework by Georg Klein uses this library.

blocks|key|765384|text|我的大学与IceWing合作，这是一种视觉任务的快速原型，用于添加任务，利用这些任务建立链，并有一个图形用户界面来查看结果等等。在比勒费尔德开发的所有机器人中，该库被广泛用于与视觉相关的任务。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|765385|您可以找到库这里|offset|length|765386|entityMap|0|LINK|mutability|MUTABLE|url|http://icewing.sourceforge.net/^0|0|6|2|0|0^^$0|@$1|2|3|4|5|6|7|N|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|O|8|@]|9|@$D|P|E|Q|1|R]]|A|$]]|$1|F|3|-4|5|6|7|S|8|@]|9|@]|A|$]]]|G|$H|$5|I|J|K|A|$L|M]]]]

My university works with IceWing a rapid prototyping for vision tasks that is used to add tasks make chains out of them and have a GUI for seeing the results etc. 
The library is widely used for vision related tasks in all the robots that are developed in Bielefeld

You can find the library <a href="http://icewing.sourceforge.net/" rel="nofollow noreferrer">here</a>

blocks|key|462333|text|如果您正在编写C%2B%2B程序，您可以查看CImg。虽然它可能不是最优化的库，但我发现它是用户友好的。它不强制您部署额外的dll，这也是很好的。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|462334|entityMap|0|LINK|mutability|MUTABLE|url|http://cimg.sourceforge.net/^0|I|4|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

If you are programing C++ you could check out <a href="http://cimg.sourceforge.net/" rel="nofollow noreferrer">CImg</a>. While it may not be the most optimized library out there I have found it to be user friendly. It's also neat that it does not force you to deploy additional dlls.

blocks|key|1996338|text|如果您只需要运动检测，您可以逃脱运动。|type|unstyled|depth|inlineStyleRanges|entityRanges|offset|length|data|1996339|entityMap|0|LINK|mutability|MUTABLE|url|http://www.lavrsen.dk/twiki/bin/view/Motion/WebHome^0|G|2|0|0^^$0|@$1|2|3|4|5|6|7|L|8|@]|9|@$A|M|B|N|1|O]]|C|$]]|$1|D|3|-4|5|6|7|P|8|@]|9|@]|C|$]]]|E|$F|$5|G|H|I|C|$J|K]]]]

If you need only motion detection, you could get away with <a href="http://www.lavrsen.dk/twiki/bin/view/Motion/WebHome" rel="nofollow noreferrer">Motion</a>

Which free/open source machine/computer vision libraries do exist?

<h1>Summary of answers</h1>

<h2>Libraries</h2>

<ul>
<li><a href="http://sourceforge.net/projects/opencvlibrary/" rel="nofollow noreferrer">OpenCV</a> 

<ul>
<li><a href="http://simplecv.org/" rel="nofollow noreferrer">SimpleCV</a></li>
</ul></li>
<li><a href="http://vxl.sourceforge.net/" rel="nofollow noreferrer">VxL</a></li>
<li><a href="http://www.vlfeat.org/" rel="nofollow noreferrer">VLFeat</a></li>
<li><a href="http://savannah.nongnu.org/projects/libcvd" rel="nofollow noreferrer">LibCVD</a></li>
<li><a href="http://icewing.sourceforge.net/" rel="nofollow noreferrer">iceWing</a></li>
<li><a href="http://cimg.sourceforge.net/" rel="nofollow noreferrer">CImg</a></li>
<li><a href="http://www.lavrsen.dk/foswiki/bin/view/Motion/WebHome" rel="nofollow noreferrer">Motion</a></li>
<li><a href="http://libccv.org/" rel="nofollow noreferrer">ccv</a></li>
</ul>

<h2>Other</h2>

<ul>
<li><a href="http://www.roborealm.com/links/vision_software.php" rel="nofollow noreferrer">RoboRealm Vision Software Applications</a></li>
<li><a href="http://en.wikipedia.org/wiki/Scale-invariant_feature_transform#External_links" rel="nofollow noreferrer">Wikipedia: List of SIFT implementations</a></li>
<li><a href="https://stackoverflow.com/questions/158756/what-is-the-best-image-manipulation-library/">Stack Overflow: What is the best image manipulation library</a></li>
</ul>

Open source machine vision libraries

翻译质量差，导致语言生硬或混乱。

没有提供实际的解决方法或示例。

解答不清晰，无法理解或解决问题。

页面排版不美观，阅读体验差。

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