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• Using OpenCV on 32-bit XP

  14 novembre 2016, par Aleksandar Rakić

  Is it possible to run OpenCV version 3.0.0 on 32-bit XP ?

  I have successfully compiled code on Win 8.1 64-bit platform but it won’t run on the other computer.

  The code I run is below (it’s only for testing purposes)

  package opencvtest;
  
  
  
  import java.awt.Image;
  
  import java.awt.image.BufferedImage;
  
  import java.awt.image.DataBufferByte;
  
  import javax.swing.ImageIcon;
  
  import javax.swing.JFrame;
  
  import javax.swing.JLabel;
  
  import org.opencv.core.*;
  
  import org.opencv.videoio.VideoCapture;
  
  import org.opencv.videoio.Videoio;
  
  
  
  public class OpenCVtest {
  
  
  
  
  
    private JFrame frame;
  
    private JLabel imageLabel;
  
  
  
   public static void main(String[] args) {
  
      OpenCVtest app = new OpenCVtest();
  
      app.initGUI();
  
      app.runMainLoop(args);
  
    }
  
  
  
    private void initGUI() {
  
      frame = new JFrame("Camera Input Example");  
  
      frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);  
  
      frame.setSize(400,400);  
  
      imageLabel = new JLabel();
  
      frame.add(imageLabel);
  
      frame.setVisible(true);       
  
    }
  
  
  
    public static BufferedImage bufferedImage(Mat m) {
  
  
  
  
  
      int type = BufferedImage.TYPE_BYTE_GRAY;
  
      if (m.channels() > 1) {
  
          type = BufferedImage.TYPE_3BYTE_BGR;
  
      }
  
      BufferedImage image = new BufferedImage(m.cols(), m.rows(), type);
  
  
  
      m.get(0, 0, ((DataBufferByte)image.getRaster().getDataBuffer()).getData());
  
      return image;
  
  
  
    }
  
  
  
    private void runMainLoop(String[] args) {
  
      //ImageProcessor imageProcessor = new ImageProcessor();
  
      System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
  
      System.out.println("Welcome to OpenCV version " + Core.VERSION);
  
      Mat webcamMatImage = new Mat();
  
      System.out.println("Mat " + webcamMatImage);
  
      Image tempImage;
  
      VideoCapture capture = new VideoCapture("Highway.mp4");
  
      System.out.println("Capture " + capture);
  
      if(!capture.isOpened()){
  
          System.out.println(capture.open("D:\\AleksandarRakic\\Java Projects\\mavenproject1\\Highway.mp4")?"Otvorio":"Nije otvorio");
  
      }
  
      capture.set(Videoio.CAP_PROP_FRAME_WIDTH,320);
  
      capture.set(Videoio.CAP_PROP_FRAME_HEIGHT,240);
  
  
  
      if( capture.isOpened()){  
  
          while (true){  
  
              capture.read(webcamMatImage);
  
                  if( !webcamMatImage.empty() ){
  
                      int type = BufferedImage.TYPE_BYTE_GRAY;
  
                      if (webcamMatImage.channels() > 1) {
  
                          type = BufferedImage.TYPE_3BYTE_BGR;
  
                      }
  
                      BufferedImage image = new BufferedImage(webcamMatImage.cols(), webcamMatImage.rows(), type);
  
  
  
                      webcamMatImage.get(0, 0, ((DataBufferByte)image.getRaster().getDataBuffer()).getData());
  
  
  
                      tempImage= image;
  
                      ImageIcon imageIcon = new ImageIcon(tempImage, "Captured video");
  
                      imageLabel.setIcon(imageIcon);
  
                      frame.pack();  //this will resize the window to fit the image
  
                  }  
  
                  else{
  
                      System.out.println(" -- Frame not captured -- Break!");
  
                      break;  
  
                  }
  
          }
  
      }
  
      else{
  
          System.out.println("Couldn't open capture.");
  
      }
  
    }
  
  
  
  }

  When I run it on XP, VideoCapture constructor fails to open the video designated. From my understanding, opencv uses it’s own ffmpeg .dll as a codec. Is this true ?

  If not, is it using the codec I have from K-Lite cp ?

  Finally, could anything else be wrong ?

  My %path% variable contains the locations to opencv_ffmpeg300.dll and openvc_java300.dll on WinXP. I also added the following to NetBeans run parameter

  -Djava.library.path="C :\opencv\build\x86\vc12\bin ;C :\opencv\build\java\x86"

• Call for Speakers : Share Your Voice at MatomoCamp 2025 !

  10 juillet, par Alex Carmona

  MatomoCamp is back for its 2025 edition — and the Call for Speakers is now open until July 31st !

  As proud sponsors of this unique, community-driven event, we’re excited to invite experts, enthusiasts, and curious minds to contribute to MatomoCamp 2025, the annual online gathering dedicated to web analytics, open source, digital privacy, and of course — Matomo. MatomoCamp is the premier free online conference for the Matomo Analytics community in Europe, sponsored by Matomo Analytics. Taking place online on Wednesday 26 November 2025 from 9:30 AM to 5:30 PM CET, this event brings together professionals passionate about ethical analytics, data privacy, and building a better web.

  Whether you’re a long-time user, developer, marketer, researcher, or just someone with a fresh perspective on ethical analytics, your voice belongs at MatomoCamp. Last year, we welcomed over 1,000 attendees from around the world. This year, we’re aiming even higher with an expanded programme designed to serve everyone from analytics beginners to enterprise architects.

  What is MatomoCamp ?

  MatomoCamp is a free, fully online event bringing together the global Matomo community. Across two days of talks, panels, demos, and workshops, participants explore :

  • Web analytics & measurement
  • Digital marketing & SEO
  • Open source projects & collaboration
  • Privacy-first data strategies
  • Case studies, experiments, and more

  With sessions in English, French, German, and beyond, MatomoCamp aims to make digital analytics more accessible, ethical, and transparent for everyone.

  MatomoCamp returns this November 2025 with an exciting new vision. For the first time, we’re expanding beyond purely technical content to welcome speakers from all backgrounds who can contribute insights on analytics, privacy, marketing, and the ethical web. Whether you’re a developer, marketer, analyst, or privacy advocate, we want to hear from you.

  Who can apply ?

  Anyone ! We’re looking for people from all backgrounds who want to share :

  • A practical tip or use case with Matomo
  • Insights into digital analytics, privacy, or open source
  • A success (or failure !) story from your own journey
  • A workshop or hands-on demonstration
  • A bold opinion on the future of web data
  • A behind-the-scenes look at your work or research

  You don’t have to be a professional speaker. We welcome first-time speakers, underrepresented voices, and community members who want to share something valuable — no matter how niche or broad.

  What makes a great talk ?

  There’s no one right formula. But here’s what works well :

  • Real-world experience
  • Specific, actionable insights
  • A clear structure (15–45 minutes)
  • Something you care deeply about
  • A story only you can tell

  And remember — this isn’t just about Matomo. Topics that touch on ethical analytics, open source values, or digital sovereignty are more than welcome.

  Key info

  • Where : Online (free & open to all)
  • When : November 2025 (exact dates to be announced)
  • Languages : English, French, German (other languages welcome !)
  • Deadline to apply : July 31, 2025
  • Submit your talk here

  Why does this matter ?

  At Matomo, we believe that data should empower, not exploit. MatomoCamp is more than just an event — it’s a celebration of what’s possible when communities come together to build a better digital future.

  As sponsors, we’re proud to support this independent, open source event. But more importantly, we want to amplify your voice — because every perspective shared brings us closer to a more ethical, transparent, and inclusive analytics ecosystem.

  Have a story to share ?

  Don’t overthink it. If it matters to you, it will matter to someone else. Apply to speak before July 31st and join us at MatomoCamp 2025 !

  Submit your session here !

  Let’s build the future of analytics — together.

  

• Anomalie #2025 : Surlignage intempestif

  20 septembre 2011, par tetue -

  Ceinture et bretelles : la classe pas_surlignable est passée par défaut sur toutes les balises de la dist depuis Changeset 50225 (c’est inutile, du coup ?)