IP摄像头与OpenCv在Java [英] IP camera with OpenCv in Java
本文介绍了IP摄像头与OpenCv在Java的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！
问题描述
我正在尝试获取和显示来自IP摄像机的视频流。我在这里找到一些示例代码： http://answers.opencv.org/question/24012/reading-video-stream-from-ip-camera-in-opencv-java/
<但是它不为我工作。我的代码工作时，当我使用我的内部网络摄像头，但当我把相机切换到IP，它不工作。我不知道为什么。有人可以帮助我吗？
这是我的代码：
import java.awt.BorderLayout;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.highgui.VideoCapture;
import org.opencv.imgproc.Imgproc;
public class openCVTest
{
public openCVTest（）
{
// TODO自动生成的构造函数stub
}
/ **
* @param args
* @throws IOException
* /
public static void main（String [] args ）throws IOException
{
System.loadLibrary（Core.NATIVE_LIBRARY_NAME）;
// VideoCapture camera = new VideoCapture（http://192.168.0.7/image.jpg）;
VideoCapture camera = new VideoCapture（0）;
if（camera.isOpened（））
{
System.out.println（Video is captured）;
}
else
{
System.out.println（）;
}
videoCamera cam = new videoCamera（camera）;
JFrame frame = new JFrame（）;
frame.setDefaultCloseOperation（JFrame.EXIT_ON_CLOSE）;
frame.add（cam）;
frame.setSize（800,800）;
frame.setVisible（true）;
while（camera.isOpened（））
{
cam.repaint（）;
}
}
}
$ b b import java.awt.Graphics;
import java.awt.Point;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;
import java.util.ArrayList;
import javax.swing.JFrame;
import javax.swing.JPanel;
import org.opencv.core.Core;
import org.opencv.Core.Mat;
import org.opencv.core.MatOfRect;
import org.opencv.core.Rect;
import org.opencv.core.Scalar;
import org.opencv.highgui.VideoCapture;
import org.opencv.imgproc.Imgproc;
import org.opencv.objdetect.CascadeClassifier;
import org.opencv.core。*;
@SuppressWarnings（serial）
public class videoCamera extends JPanel
{
VideoCapture camera;
public videoCamera（VideoCapture cam）
{
camera = cam;
}
/ **
* @param args
* /
public static void main（String [] args）
{
// TODO自动生成方法存根
}
public BufferedImage Mat2BufferedImage（Mat m）
{
int type = BufferedImage.TYPE_BYTE_GRAY;
if（m.channels（）> 1）
{
type = BufferedImage.TYPE_3BYTE_BGR;
}
int bufferSize = m.channels（）* m.cols（）* m.rows（）;
byte [] b = new byte [bufferSize];
m.get（0，0，b）; //获取所有像素
BufferedImage img = new BufferedImage（m.cols（），m.rows（），type）;
final byte [] targetPixels =（（DataBufferByte）img.getRaster（）。getDataBuffer（））。getData（）;
System.arraycopy（b，0，targetPixels，0，b.length）;
return img;
}
public void paintComponent（Graphics g）
{
super.paintComponent（g）;
Mat mat = new Mat（）;
if（camera.read（mat））
{
System.out.print（IMAGE）;
}
BufferedImage image = Mat2BufferedImage（mat）;
// Mat gray = turnGray（mat）;
// MatOfRect objects = new MatOfRect（）;
// CascadeClassifier cas = new CascadeClassifier（）;
//cas.detectMultiScale(gray,objects）;
// Mat thresh = threash（gray）;
// BufferedImage image = Mat2BufferedImage（thresh）;
g.drawImage（image，10,10，image.getWidth（），image.getHeight（），null）;
}
public Mat turnGray（Mat img）
{
Mat mat1 = new Mat（）;
Imgproc.cvtColor（img，mat1，Imgproc.COLOR_RGB2GRAY）;
return mat1;
}
public Mat threash（Mat img）
{
Mat threshed = new Mat（）;
int SENSITIVITY_VALUE = 100;
Imgproc.threshold（img，threshed，SENSITIVITY_VALUE，255，Imgproc.THRESH_BINARY）;
return threshed;
}
}
帮助。我能够使用你说的话找到正确的IP地址（http://192.168.0.6/VIDEO.CGI）（是的，我知道7成了6 ，它的一个不同的相机），以获取我的浏览器中的视频。但是我仍然得到以下错误。
线程中的异常AWT-EventQueue-0java.lang.IllegalArgumentException：Width （0）和高度（0）必须> 0
at java.awt.image.SampleModel。< init>（未知源）
at java.awt.image.ComponentSampleModel。< init>（未知源）
at java。 （未知源）
at java.awt.image.Raster.createInterleavedRaster（未知源）
at java.awt.image.Raster.createInterleavedRaster（未知源）
在java.awt.image.Raster.createInterleavedRaster（未知源）
在java.awt.image.Raster.createInterleavedSampleModel。
at java.awt.image.Raster.createInterleavedRaster（未知源）
at java.awt.image.ComponentColorModel.createCompatibleWritableRaster（未知源）
at java.awt.image.BufferedImage。 ; init>（unknown Source）
at videoCamera.Mat2BufferedImage（videoCamera.java:54）
at videoCamera.paintComponent（videoCamera.java:74）
at javax.swing.JComponent.paint未知源）
at javax.swing.JComponent.paintChildren（未知源）
at javax.swing.JComponent.paint（未知源）
at javax.swing.JComponent.paintChildren ）
at javax.swing.JComponent.paint（未知源）
at javax.swing.JLayeredPane.paint（未知源）
at javax.swing.JComponent.paintChildren（Unknown Source）
at javax.swing.JComponent.paintToOffscreen（未知源）
at javax.swing.BufferStrategyPaintManager.paint（未知源）
at javax.swing.RepaintManager.paint（未知源）
在javax.swing.JComponent.paint（未知源）
在java.awt.GraphicsCallback $ PaintCallback.run（未知源）
在sun.awt.SunGraphicsCallback.runOneComponent（未知来源）
at sun.awt.SunGraphicsCallback.runComponents（未知源）
at java.awt.Container.paint（未知源）
at java.awt.Window.paint（未知源）
at javax.swing.RepaintManager $ 3.run（未知源）
at javax.swing.RepaintManager $ 3.run（未知源）
at java.security.AccessController.doPrivileged（Native方法）
at java.security.ProtectionDomain $ 1.doIntersectionPrivilege（未知源）
at javax.swing.RepaintManager.paintDirtyRegions（未知源）
at javax.swing.RepaintManager.paintDirtyRegions（未知源）
at javax .swing.RepaintManager.prePaintDirtyRegions（未知源）
at javax.swing.RepaintManager.access $ 1100（未知源）
at javax.swing.RepaintManager $ ProcessingRunnable.run（未知源）
at java.awt.event.InvocationEvent.dispatch（未知源）
at java.awt.EventQueue.dispatchEventImpl（未知源）
at java.awt.EventQueue.access $ 200（未知源）
在java.awt.EventQueue $ 3.run（未知源）
在java.awt.EventQueue $ 3.run（未知源）
在java.security.AccessController.doPrivileged（本地方法）
java.security.ProtectionDomain $ 1.doIntersectionPrivilege（未知源）
at java.awt.EventQueue.dispatchEvent（未知源）
at java.awt.EventDispatchThread.pumpOneEventForFilters（未知源）
at java.awt.EventDispatchThread.pumpEventsForFilter（未知源）
at java.awt.EventDispatchThread.pumpEventsForHierarchy（未知源）
at java.awt.EventDispatchThread.pumpEvents（未知源）
在java。 awt.EventDispatchThread.pumpEvents（未知源）
at java.awt.EventDispatchThread.run（未知源）
$ b b
我认为这是因为VideoCapture没有正确抓取帧。
这是我要使用的相机
http://www.trendnet.com/products/proddetail.asp?prod=150_TV-IP100W-N
.jpg 是指单个图片文件，而 .mjpg 可以访问视频流。重要的是定义IP和用于连接的端口。
根据您拥有的设备和相机网络界面中定义的设置，网址会有所不同：
VideoCapture camera = new VideoCapture（http://192.168.0.7:8080/?dummy=param.mjpg）;
VideoCapture camera = new VideoCapture（http://192.168.0.7:8080/mjpeg.cgi）;
VideoCapture camera = new VideoCapture（http://192.168.0.7:8080/mjpg/mjpeg.cgi）;
VideoCapture camera = new VideoCapture（http://192.168.0.7:8080/video.mjpeg）;
VideoCapture camera = new VideoCapture（http://192.168.0.7:8080/video.cgi?.m JPG）;
当您通过浏览器访问有效的URL时，应显示视频流。找到有效的地址后，只需将其传递给 VideoCapture 构造函数即可。在这个例子中，我展示了如何通过HTTP访问流，但也支持RTSP协议。
I am trying to get and display an video stream from a IP camera. I found some sample code here:http://answers.opencv.org/question/24012/reading-video-stream-from-ip-camera-in-opencv-java/
But it is not working for me. my code works when I use my internal webcam, but when I switch the camera to the IP, it does not work. I have no idea why. Can someone please help me? Here is my code:
import java.awt.BorderLayout;
import java.awt.Image;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;
import java.io.File;
import java.io.IOException;
import javax.imageio.ImageIO;
import javax.swing.ImageIcon;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.highgui.VideoCapture;
import org.opencv.imgproc.Imgproc;
public class openCVTest
{
public openCVTest()
{
// TODO Auto-generated constructor stub
}
/**
* @param args
* @throws IOException
*/
public static void main(String[] args) throws IOException
{
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
//VideoCapture camera = new VideoCapture("http://192.168.0.7/image.jpg");
VideoCapture camera = new VideoCapture(0);
if (camera.isOpened())
{
System.out.println("Video is captured");
}
else
{
System.out.println("");
}
videoCamera cam = new videoCamera(camera);
JFrame frame = new JFrame();
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
frame.add(cam);
frame.setSize(800,800);
frame.setVisible(true);
while(camera.isOpened())
{
cam.repaint();
}
}
}
import java.awt.Graphics;
import java.awt.Point;
import java.awt.image.BufferedImage;
import java.awt.image.DataBufferByte;
import java.util.ArrayList;
import javax.swing.JFrame;
import javax.swing.JPanel;
import org.opencv.core.Core;
import org.opencv.core.Mat;
import org.opencv.core.MatOfRect;
import org.opencv.core.Rect;
import org.opencv.core.Scalar;
import org.opencv.highgui.VideoCapture;
import org.opencv.imgproc.Imgproc;
import org.opencv.objdetect.CascadeClassifier;
import org.opencv.core.*;
@SuppressWarnings("serial")
public class videoCamera extends JPanel
{
VideoCapture camera;
public videoCamera(VideoCapture cam)
{
camera = cam;
}
/**
* @param args
*/
public static void main(String[] args)
{
// TODO Auto-generated method stub
}
public BufferedImage Mat2BufferedImage(Mat m)
{
int type = BufferedImage.TYPE_BYTE_GRAY;
if (m.channels() > 1)
{
type = BufferedImage.TYPE_3BYTE_BGR;
}
int bufferSize = m.channels() * m.cols() * m.rows();
byte[] b = new byte[bufferSize];
m.get(0, 0, b); // get all the pixels
BufferedImage img = new BufferedImage(m.cols(), m.rows(), type);
final byte[] targetPixels = ((DataBufferByte) img.getRaster().getDataBuffer()).getData();
System.arraycopy(b, 0, targetPixels, 0, b.length);
return img;
}
public void paintComponent(Graphics g)
{
super.paintComponent(g);
Mat mat = new Mat();
if( camera.read(mat))
{
System.out.print("IMAGE");
}
BufferedImage image = Mat2BufferedImage(mat);
//Mat gray = turnGray(mat);
//MatOfRect objects = new MatOfRect();
//CascadeClassifier cas = new CascadeClassifier();
//cas.detectMultiScale(gray,objects);
//Mat thresh = threash( gray);
//BufferedImage image = Mat2BufferedImage(thresh);
g.drawImage(image,10,10,image.getWidth(),image.getHeight(), null);
}
public Mat turnGray( Mat img)
{
Mat mat1 = new Mat();
Imgproc.cvtColor(img, mat1, Imgproc.COLOR_RGB2GRAY);
return mat1;
}
public Mat threash(Mat img)
{
Mat threshed = new Mat();
int SENSITIVITY_VALUE = 100;
Imgproc.threshold(img, threshed, SENSITIVITY_VALUE,255,Imgproc.THRESH_BINARY);
return threshed;
}
}
Thank you for the help. I was able to use what you said to find the proper IP address (http://192.168.0.6/VIDEO.CGI) (yes, I know the 7 became a 6, its a different camera) to get a video in my browser. but I am still get the following error.
Exception in thread "AWT-EventQueue-0" java.lang.IllegalArgumentException: Width (0) and height (0) must be > 0
at java.awt.image.SampleModel.<init>(Unknown Source)
at java.awt.image.ComponentSampleModel.<init>(Unknown Source)
at java.awt.image.PixelInterleavedSampleModel.<init>(Unknown Source)
at java.awt.image.Raster.createInterleavedRaster(Unknown Source)
at java.awt.image.Raster.createInterleavedRaster(Unknown Source)
at java.awt.image.Raster.createInterleavedRaster(Unknown Source)
at java.awt.image.ComponentColorModel.createCompatibleWritableRaster(Unknown Source)
at java.awt.image.BufferedImage.<init>(Unknown Source)
at videoCamera.Mat2BufferedImage(videoCamera.java:54)
at videoCamera.paintComponent(videoCamera.java:74)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintChildren(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JComponent.paintChildren(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at javax.swing.JLayeredPane.paint(Unknown Source)
at javax.swing.JComponent.paintChildren(Unknown Source)
at javax.swing.JComponent.paintToOffscreen(Unknown Source)
at javax.swing.BufferStrategyPaintManager.paint(Unknown Source)
at javax.swing.RepaintManager.paint(Unknown Source)
at javax.swing.JComponent.paint(Unknown Source)
at java.awt.GraphicsCallback$PaintCallback.run(Unknown Source)
at sun.awt.SunGraphicsCallback.runOneComponent(Unknown Source)
at sun.awt.SunGraphicsCallback.runComponents(Unknown Source)
at java.awt.Container.paint(Unknown Source)
at java.awt.Window.paint(Unknown Source)
at javax.swing.RepaintManager$3.run(Unknown Source)
at javax.swing.RepaintManager$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.paintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.prePaintDirtyRegions(Unknown Source)
at javax.swing.RepaintManager.access$1100(Unknown Source)
at javax.swing.RepaintManager$ProcessingRunnable.run(Unknown Source)
at java.awt.event.InvocationEvent.dispatch(Unknown Source)
at java.awt.EventQueue.dispatchEventImpl(Unknown Source)
at java.awt.EventQueue.access$200(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.awt.EventQueue$3.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.security.ProtectionDomain$1.doIntersectionPrivilege(Unknown Source)
at java.awt.EventQueue.dispatchEvent(Unknown Source)
at java.awt.EventDispatchThread.pumpOneEventForFilters(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForFilter(Unknown Source)
at java.awt.EventDispatchThread.pumpEventsForHierarchy(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.pumpEvents(Unknown Source)
at java.awt.EventDispatchThread.run(Unknown Source)
I think it is because VideoCapture is not grabbing the frame correctly.
This is the camera I am trying to use http://www.trendnet.com/products/proddetail.asp?prod=150_TV-IP100W-N
解决方案
.jpg refers to a single image file, while .mjpg gives access to the video stream. It's important to define the IP and the PORT used to connect.
Depending on the device you have and the settings defined in the web interface of the camera, the URL is going to be different:
VideoCapture camera = new VideoCapture("http://192.168.0.7:8080/?dummy=param.mjpg");
VideoCapture camera = new VideoCapture("http://192.168.0.7:8080/mjpeg.cgi");
VideoCapture camera = new VideoCapture("http://192.168.0.7:8080/mjpg/mjpeg.cgi");
VideoCapture camera = new VideoCapture("http://192.168.0.7:8080/video.mjpeg");
VideoCapture camera = new VideoCapture("http://192.168.0.7:8080/video.cgi?.mjpg");
When you access a valid URL via browser it should display the video stream. Once you find the address that works, simply pass it to VideoCapture constructor. In this examples I showed how to access the stream via HTTP, but the RTSP protocol is also supported.
这篇关于IP摄像头与OpenCv在Java的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！
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