blocks|key|1702466|text|是的，还有更优雅的方法。您可以将Mat转换为BufferedImage类型，然后使用swing加载它。将其转换为缓冲图像的代码为：|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1702467|++++Mat+image_tmp+=+your+image

++++MatOfByte+matOfByte+=+new+MatOfByte();

++++Highgui.imencode(".jpg",+image_tmp,+matOfByte);+

++++byte[]+byteArray+=+matOfByte.toArray();
++++BufferedImage+bufImage+=+null;

++++try+{

++++++++InputStream+in+=+new+ByteArrayInputStream(byteArray);
++++++++bufImage+=+ImageIO.read(in);
++++}+catch+(Exception+e)+{
++++++++e.printStackTrace();
++++}|code-block|syntax|javascript|1702468|然后你就可以在你的GUI对象中绘制它：|1702469|g.drawImage(bufImage+,+0,+0,+null);|1702470|其中g为Graphics类型|1702471|希望这能有所帮助。|1702472|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]]|$1|G|3|H|5|6|7|S|8|@]|9|@]|A|$]]|$1|I|3|J|5|D|7|T|8|@]|9|@]|A|$E|F]]|$1|K|3|L|5|6|7|U|8|@]|9|@]|A|$]]|$1|M|3|N|5|6|7|V|8|@]|9|@]|A|$]]|$1|O|3|-4|5|6|7|W|8|@]|9|@]|A|$]]]|P|$]]

Yes there is more elegant way to do it. You can concert Mat to BufferedImage type and then just Load it with swing. The code to convert it to Buffered image is:

<pre><code> Mat image_tmp = your image

 MatOfByte matOfByte = new MatOfByte();

 Highgui.imencode(".jpg", image_tmp, matOfByte); 

 byte[] byteArray = matOfByte.toArray();
 BufferedImage bufImage = null;

 try {

 InputStream in = new ByteArrayInputStream(byteArray);
 bufImage = ImageIO.read(in);
 } catch (Exception e) {
 e.printStackTrace();
 }
</code></pre>

And then you just can paint it in your GUI object:

<pre><code>g.drawImage(bufImage , 0, 0, null);
</code></pre>

where g is of type Graphics

Hope this helps.

blocks|key|1916075|text|这是一个现成的解决方案，用于在Java+OpenCV中等效的Imshow()，它简单易用。API将如下所示：|type|unstyled|depth|inlineStyleRanges|offset|length|style|CODE|entityRanges|data|1916076|Imshow+im+=+new+Imshow("Title");
im.showImage(matimage);|code-block|syntax|javascript|1916077|请访问此处https://github.com/master-atul/ImShow-Java-OpenCV|1916078|这是一个更好的解决方案，因为您不需要将图像存储到磁盘中并再次读取。因此，它减少了从磁盘读取的开销，因此速度更快。|1916079|entityMap|0|LINK|mutability|MUTABLE|url|https://github.com/master-atul/ImShow-Java-OpenCV^0|U|8|0|0|5|1D|0|0|0^^$0|@$1|2|3|4|5|6|7|W|8|@$9|X|A|Y|B|C]]|D|@]|E|$]]|$1|F|3|G|5|H|7|Z|8|@]|D|@]|E|$I|J]]|$1|K|3|L|5|6|7|10|8|@]|D|@$9|11|A|12|1|13]]|E|$]]|$1|M|3|N|5|6|7|14|8|@]|D|@]|E|$]]|$1|O|3|-4|5|6|7|15|8|@]|D|@]|E|$]]]|P|$Q|$5|R|S|T|E|$U|V]]]]

This is a readymade solution for <code>Imshow()</code> equivalent in Java OpenCV Its simple to use. API will look like:

<pre><code>Imshow im = new Imshow("Title");
im.showImage(matimage);
</code></pre>

Visit here <a href="https://github.com/master-atul/ImShow-Java-OpenCV" rel="nofollow">https://github.com/master-atul/ImShow-Java-OpenCV</a>

This is a better solution as you don't store the image into disk and read again. Hence it reduces the overhead of reading from a disk and thus is faster.

blocks|key|1702628|text|使用@andriy的anwser。我想出了这个解决方案。我使用的是JFrame而不是图形。希望这能有所帮助。|type|unstyled|depth|inlineStyleRanges|entityRanges|data|1702629|public+void+imshow(Mat+src){
++++BufferedImage+bufImage+=+null;
++++try+{
++++++++MatOfByte+matOfByte+=+new+MatOfByte();
++++++++Highgui.imencode(".jpg",+src,+matOfByte);+
++++++++byte[]+byteArray+=+matOfByte.toArray();
++++++++InputStream+in+=+new+ByteArrayInputStream(byteArray);
++++++++bufImage+=+ImageIO.read(in);

++++++++JFrame+frame+=+new+JFrame("Image");
++++++++frame.getContentPane().setLayout(new+FlowLayout());
++++++++frame.getContentPane().add(new+JLabel(new+ImageIcon(bufImage)));
++++++++frame.pack();
++++++++frame.setVisible(true);
++++++++frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
++++}+catch+(Exception+e)+{
++++++++e.printStackTrace();
++++}
}|code-block|syntax|javascript|1702630|entityMap^0|0|0^^$0|@$1|2|3|4|5|6|7|I|8|@]|9|@]|A|$]]|$1|B|3|C|5|D|7|J|8|@]|9|@]|A|$E|F]]|$1|G|3|-4|5|6|7|K|8|@]|9|@]|A|$]]]|H|$]]

Using @andriy's anwser. I came up with this solution. I used JFrame instead of Graphics. Hope this helps.

<pre><code>public void imshow(Mat src){
 BufferedImage bufImage = null;
 try {
 MatOfByte matOfByte = new MatOfByte();
 Highgui.imencode(".jpg", src, matOfByte); 
 byte[] byteArray = matOfByte.toArray();
 InputStream in = new ByteArrayInputStream(byteArray);
 bufImage = ImageIO.read(in);

 JFrame frame = new JFrame("Image");
 frame.getContentPane().setLayout(new FlowLayout());
 frame.getContentPane().add(new JLabel(new ImageIcon(bufImage)));
 frame.pack();
 frame.setVisible(true);
 frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
 } catch (Exception e) {
 e.printStackTrace();
 }
}
</code></pre>

I'm developing an application using Java Opencv-2.4.4 and swing GUI. Problem is that I'm unable to find any solution, that shows efficient way how to print processed image (saved in Mat object) to java swing GUI. For this moment I'm using this clumsy solution: 

<pre><code>javax.swing.JLabel outputImage;
outputImage.setIcon(new javax.swing.ImageIcon("/home/username/Output.png"));

private void sliderStateChanged(javax.swing.event.ChangeEvent evt) { 
 .
 .
 Mat canny; // Here is saved what I want to plot
 String filename = "/home/username/Output.png";
 Highgui.imwrite(filename, canny); // write to disk
 outputImage.setIcon(new ImageIcon(ImageIO.read(new File(filename)))); //update Icon
 .
 .
}
</code></pre>

When user changes some values, inputs etc ., in GUI I have to overwrite Output.png on disk and update jLabel with new image from disk.

Is there any more elegant / efficient solution to this ? Is it posible to plot or convert Mat object directly to Canvas or Image or anything that is printable as image in swing ?

Opencv java - Load image to GUI

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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我正在使用Java Opencv-2.4.4和swing GUI开发一个应用程序。问题是我找不到任何解决方案，这显示了如何将处理过的图像(保存在Mat对象中)打印到java swing GUI的有效方法。现在我使用的是这个笨拙的解决方案：javax.swing.JLabel outputImage;outputImag...

问Opencv java -将图像加载到GUI
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