blocks|key|179228|text|在第二个示例中，您跳过了这一行|type|unstyled|depth|inlineStyleRanges|entityRanges|data|179229|+System.loadLibrary(Core.NATIVE_LIBRARY_NAME);|code-block|syntax|javascript|179230|所以opencv库没有加载，UnsatisfiedLinkError，等等。|179231|编辑|179232|感谢@Jishnu+Prathap突出了java.library路径问题，如果您在设置时遇到问题，您仍然可以尝试使用java包装器的绝对路径so/dll/dylib，如下所示：|179233|+System.load("/path+to/our/java_wrapper");|179234|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|R|8|@]|9|@]|A|$E|F]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|D|7|V|8|@]|9|@]|A|$E|F]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

in your second example , you skipped this line

<pre><code> System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
</code></pre>

so the opencv libs werent loaded, UnsatisfiedLinkError, etc...

[edit]:

thanks to @Jishnu Prathap for highlighting the java.library path issue, if you run into problems setting that, you can still try to use an absolute path to the java wrapper so/dll/dylib like:

<pre><code> System.load("/path to/our/java_wrapper");
</code></pre>

blocks|key|177398|text|在java.I中使用OpenCV时，我遇到了类似的错误。我做了两件事来解决这个问题。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|177399|177400|static{+System.loadLibrary(Core.NATIVE_LIBRARY_NAME);+}+|ordered-list-item|offset|length|style|CODE|177401|I将路径添加到OpenCV+dll或.so添加到javalibpath或path。由于某种原因，这实际上不起作用，我最终将OpenCV+dll放在了system32+folder.|BOLD|177402|中。|177403|entityMap^0|0|0|0|1J|0|1P|S|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|-4|5|6|7|R|8|@]|9|@]|A|$]]|$1|C|3|D|5|E|7|S|8|@$F|T|G|U|H|I]]|9|@]|A|$]]|$1|J|3|K|5|E|7|V|8|@$F|W|G|X|H|L]]|9|@]|A|$]]|$1|M|3|N|5|6|7|Y|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|Z|8|@]|9|@]|A|$]]]|P|$]]

I had a similar error while using OpenCV with java.I did 2 things to resolve it.

<ol>
<li><code>static{ System.loadLibrary(Core.NATIVE_LIBRARY_NAME); }</code> </li>
<li>I added the path to OpenCV dll or .so to javalibpath or path. which actually didnt work for some reason and i ended up putting the OpenCV dll in the system32 folder. </li>
</ol>

blocks|key|2784667|text|所以，我也遇到了这个问题，我按照你们所有人的建议做了，它在我的x64窗口中工作得很好，但在x86中却不能工作。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2784668|最后，我通过修改以下代码找到了解决方案：|2784669|VideoCapture+capture+=+new+VideoCapture(0);|code-block|syntax|javascript|2784670|为|2784671|++++VideoCapture+capture+=+new+VideoCapture();
++++capture.open("resources/vid.MP4");|2784672|我不知道这为什么会成功，但我希望它能帮助那些有同样问题的人。|2784673|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|F|7|S|8|@]|9|@]|A|$G|H]]|$1|I|3|J|5|6|7|T|8|@]|9|@]|A|$]]|$1|K|3|L|5|F|7|U|8|@]|9|@]|A|$G|H]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

So, I was having this problem too and I did what you all suggested, it worked fine in my x64 windows, but in a x86 couldn't make it work.

At last I found a solution by changing:

<pre><code>VideoCapture capture = new VideoCapture(0);
</code></pre>

for

<pre><code> VideoCapture capture = new VideoCapture();
 capture.open("resources/vid.MP4");
</code></pre>

I don't know why this worked but I hope it may help somebody with my same problem.

blocks|key|2997177|text|适用于使用opencv3.x的普通用户的：|type|unstyled|depth|inlineStyleRanges|offset|length|style|BOLD|entityRanges|data|2997178|HighGUI模块在Java+for+opencv+3.0及更高版本中不再存在。|2997179|import+org.opencv.videoio.VideoCapture;|code-block|syntax|javascript|2997180|而不是|2997181|import+org.opencv.highgui.VideoCapture;|2997182|videoio包括VideoCapture、VideoWriter。|2997183|类似地：|2997184|imgcodecs包括imread/imwrite和friends|2997185|示例：|2997186|Highgui.imread(fileName)|2997187|-->|2997188|+Imgcodecs.imread(fileName)|2997189|entityMap^0|K|1|0|0|0|0|0|0|0|0|0|3|0|0|0|0^^$0|@$1|2|3|4|5|6|7|16|8|@$9|17|A|18|B|C]]|D|@]|E|$]]|$1|F|3|G|5|6|7|19|8|@]|D|@]|E|$]]|$1|H|3|I|5|J|7|1A|8|@]|D|@]|E|$K|L]]|$1|M|3|N|5|6|7|1B|8|@]|D|@]|E|$]]|$1|O|3|P|5|J|7|1C|8|@]|D|@]|E|$K|L]]|$1|Q|3|R|5|6|7|1D|8|@]|D|@]|E|$]]|$1|S|3|T|5|6|7|1E|8|@]|D|@]|E|$]]|$1|U|3|V|5|6|7|1F|8|@]|D|@]|E|$]]|$1|W|3|X|5|6|7|1G|8|@$9|1H|A|1I|B|C]]|D|@]|E|$]]|$1|Y|3|Z|5|J|7|1J|8|@]|D|@]|E|$K|L]]|$1|10|3|11|5|6|7|1K|8|@]|D|@]|E|$]]|$1|12|3|13|5|J|7|1L|8|@]|D|@]|E|$K|L]]|$1|14|3|-4|5|6|7|1M|8|@]|D|@]|E|$]]]|15|$]]

For general users using opencv3.x:

HighGUI module does not exist anymore in Java for opencv 3.0 and above.

<pre><code>import org.opencv.videoio.VideoCapture;
</code></pre>

instead of 

<pre><code>import org.opencv.highgui.VideoCapture;
</code></pre>

videoio includes VideoCapture, VideoWriter.

Similarly:

imgcodecs includes imread/imwrite and friends

Example:

<pre><code>Highgui.imread(fileName)
</code></pre>

-->

<pre><code> Imgcodecs.imread(fileName)
</code></pre>

blocks|key|2784703|text|尝试下面的代码|type|unstyled|depth|inlineStyleRanges|entityRanges|data|2784704|导入org.opencv.core.CvType；导入org.opencv.core.Mat；|2784705|导入nu.pattern.OpenCV；|2784706|公共类OpencvMain+{|2784707|public+static+void+main(+String[]+args+)
+++{

++++++OpenCV.loadLocally();
++++++Mat+mat+=+Mat.eye(+3,+3,+CvType.CV_8UC1+);
++++++System.out.println(+"mat+=+"+%2B+mat.dump()+);
+++}|code-block|syntax|javascript|2784708|}|2784709|entityMap^0|0|0|0|0|0|0^^$0|@$1|2|3|4|5|6|7|Q|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|R|8|@]|9|@]|A|$]]|$1|D|3|E|5|6|7|S|8|@]|9|@]|A|$]]|$1|F|3|G|5|6|7|T|8|@]|9|@]|A|$]]|$1|H|3|I|5|J|7|U|8|@]|9|@]|A|$K|L]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Try the below code 

import org.opencv.core.CvType;
import org.opencv.core.Mat;

import nu.pattern.OpenCV;

public class OpencvMain {

<pre><code>public static void main( String[] args )
 {

 OpenCV.loadLocally();
 Mat mat = Mat.eye( 3, 3, CvType.CV_8UC1 );
 System.out.println( "mat = " + mat.dump() );
 }
</code></pre>

}

blocks|key|177434|text|为了解决这个问题，我在网上尝试了很多教程，只有一个对我有帮助。在这种方法中有两个不同的步骤，|type|unstyled|depth|inlineStyleRanges|entityRanges|data|177435|首先，将java项目从Opencv+SDK导入到Android+studio中时，确保取消选中导入对话框中显示的所有复选框。|offset|length|style|BOLD|177436|其次，确保导入OpenCV.mk文件，该文件位于SDK的本机/jdk中。|177437|在这之后，System.loadLibrary()似乎返回了true，这让我松了一口气，因为我花了几个小时才弄明白这一点|177438|以下是帮助我使用https://medium.com/@rdeep/android-opencv-integration-without-opencv-manager-c259ef14e73b的教程的链接|177439|entityMap|0|LINK|mutability|MUTABLE|url|https://medium.com/@rdeep/android-opencv-integration-without-opencv-manager-c259ef14e73b^0|0|17|I|0|7|9|0|0|8|2G|0|0^^$0|@$1|2|3|4|5|6|7|V|8|@]|9|@]|A|$]]|$1|B|3|C|5|6|7|W|8|@$D|X|E|Y|F|G]]|9|@]|A|$]]|$1|H|3|I|5|6|7|Z|8|@$D|10|E|11|F|G]]|9|@]|A|$]]|$1|J|3|K|5|6|7|12|8|@]|9|@]|A|$]]|$1|L|3|M|5|6|7|13|8|@]|9|@$D|14|E|15|1|16]]|A|$]]|$1|N|3|-4|5|6|7|17|8|@]|9|@]|A|$]]]|O|$P|$5|Q|R|S|A|$T|U]]]]

I tried a lot of tutorials online for the resolution, only one of them have helped me.
There are two steps that are different in this method,
Firstly, while importing the java project from Opencv SDK into the Android studio, make sure to uncheck all the checkboxes presented in the import dialog.
Secondly, make sure you import the OpenCV.mk file that is in the native/jdk of the SDK..
The System.loadLibrary() seems to return true after this, which was a huge relief for me as it took me several hours to figure this out
Here's the link to the tutorial that helped me
<a href="https://medium.com/@rdeep/android-opencv-integration-without-opencv-manager-c259ef14e73b" rel="nofollow noreferrer">https://medium.com/@rdeep/android-opencv-integration-without-opencv-manager-c259ef14e73b</a>

I need capture a video stream from my USB webcam, for this i use Opencv 2.4.6 for developing in Java. I follow the steps listed in <a href="http://docs.opencv.org/doc/tutorials/introduction/desktop_java/java_dev_intro.html#java-project-in-eclipse">here</a>

I add the "C:\opencv\build\java\x64" dir to my System PATH and include the "opencv-246.jar" file into my libraries on ECLIPSE. When y run the explame 

<pre><code>import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;

public class Main {
 public static void main(String[] args) {
 System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
 Mat m = Mat.eye(3, 3, CvType.CV_8UC1);
 System.out.println("m = " + m.dump());
 }
}
</code></pre>

i get 

<pre><code>m = [1, 0, 0;
 0, 1, 0;
 0, 0, 1]
</code></pre>

OK =)

but when i run 

<pre><code>import org.opencv.highgui.VideoCapture;

public class Main {
 public static void main(String[] args) {
 VideoCapture vc = new VideoCapture(0);
 if(vc.isOpened()){
 System.out.println("Works!");
 }
 }
}
</code></pre>

i get 

<pre><code>Exception in thread "main" java.lang.UnsatisfiedLinkError: org.opencv.highgui.VideoCapture.n_VideoCapture(I)J
 at org.opencv.highgui.VideoCapture.n_VideoCapture(Native Method)
 at org.opencv.highgui.VideoCapture.&lt;init&gt;(VideoCapture.java:113)
 at Main.main(Main.java:5)
</code></pre>

i add all the routes containes in:

<blockquote>
 C:\opencv\build\x64\vc10
</blockquote>

one by one,but doesn`t work.

Finally i create a variable called OPENCV_DIR with C:\opencv\build\x64\vc10 but still getting UnsatisfiedLinkError.

PLEASE HELP ME!

OpenCV + Java = UnsatisfiedLinkError

Android

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Java

我需要从我的USB摄像头捕获视频流，为此，我使用Opencv 2.4.6进行Java开发。我遵循中列出的步骤我将"C:\opencv\build\java\x64“目录添加到我的系统路径中，并在ECLIPSE上将"opencv-246.jar”文件包含到我的库中。当你运行explame时import org.openc...

问OpenCV + Java = UnsatisfiedLinkError
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