使用Opencv Java跟踪彩色球
这是我第一次使用opencv。我选择它是因为我有使用JAVA编码的经验。但是在尝试解决编码问题时遇到了一些困难。
- 我的第一个问题：
- 我的第二个问题：
我想从一个框架中捕捉颜色，这样当我用鼠标点击时它会给我RGB颜色，我可以转换为HSV并发送到我的“inRange方法”，我可以跟踪我从框架中选择的任何颜色。 它不起作用。它给我的颜色与我选择的颜色无关。
我想从我的物体中检测轮廓并检测其位置或与相机的距离，但我不确定如何。
这是我的代码：
package application;
import java.awt.event.MouseEvent;
import java.awt.image.BufferedImage;
import java.io.ByteArrayInputStream;
import java.util.ArrayList;
import java.util.List;
import java.util.Timer;
import java.util.TimerTask;
import javafx.application.Platform;
import javafx.event.ActionEvent;
import javafx.event.Event;
import javafx.event.EventHandler;
import javafx.event.EventType;
import javafx.fxml.FXML;
import javafx.scene.control.Button;
import javafx.scene.control.Label;
import javafx.scene.control.Slider;
import javafx.scene.image.Image;
import javafx.scene.image.ImageView;
import javafx.scene.layout.Pane;
import javafx.scene.paint.Color;
import org.opencv.core.Core;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.MatOfByte;
import org.opencv.core.MatOfPoint;
import org.opencv.core.Scalar;
import org.opencv.core.Size;
import org.opencv.highgui.Highgui;
import org.opencv.highgui.VideoCapture;
import org.opencv.imgproc.Imgproc;
public class FxController
{
double h=0,s=0,v=0,tolerance=10;
@FXML
private Button start_b;
@FXML
private ImageView currentFrame,currentFrame2;
@FXML
private Slider hSlider,sSlider,vSlider;
@FXML
private Label hLabel,sLabel,vLabel;
private Pane rootElement;
private Timer timer;
private VideoCapture capture = new VideoCapture();
private EventHandler handler;
private int red,green,bleu;
private double alpha ;
//private float hsb[];
@FXML
protected void startCamera(ActionEvent event)
{
if(this.rootElement!=null)//savoir wache main class est accessible
{
final ImageView frameView = currentFrame;//prendre l'objet ImageView pour montre le streaming
final ImageView frameView2 = currentFrame2;
/*handler = new EventHandler(){//clic dial la souris wesst l'image
@Override
public void handle(Event e) {
System.out.println("YOOOOO"+e.getEventType());
}
};*/
frameView.setOnMouseClicked(Event->{Mat m= new Mat();
byte[] pixel=new byte[4];
//int [] rgb = new int[3];
float[] hsv = new float[3];
//Imgproc.cvtColor(grabMat(0),m,CvType.CV_8UC1);
grabMat(0).convertTo(m, CvType.CV_8UC3);
m.get((int)Event.getX(),(int)Event.getY(),pixel);
/*alpha=(pixel[0] >> 24) & 0xff;
red=(pixel[1] >> 16) & 0xff;
green=(pixel[2] >> 8) & 0xff;
bleu=(pixel[3]) & 0xff;*/
alpha=pixel[0] & 0xff;
red=pixel[1] & 0xff;
green=pixel[2] & 0xff;//fuuuuuuuuuuuuuuuuuuuuuck
bleu=pixel[3] & 0xff;
hsv=java.awt.Color.RGBtoHSB(red,green,bleu, null);
System.out.println("alpha= "+alpha+"---red= "+red+"---bleu= "+bleu+"---green= "+green);
h= hsv[0];
s=hsv[1];
v=hsv[2];
System.out.println("h= "+h+"---s= "+s+"---v= "+v);
//Event.getX();//x du pixel ou la souris berkat
//Event.getY();
//BufferedImage.setRGB(Event.getX(),Event.getY(), Color.getRGB());
});
if(!this.capture.isOpened())//voir est c que la capture stream est ouverte
{
this.capture.open(0);//commence la capture video
//prendre le fram chaque 33 ms(30 frames/sec)
TimerTask FrameGrabber = new TimerTask(){
@Override
public void run()
{
Image tmp = grabFrame(Imgproc.COLOR_RGB2RGBA);//imageRGB
//Image tmp2 = grabFrame(Imgproc.COLOR_RGB2HSV);
Image tmp3 = newColorDetection(grabMat(Imgproc.COLOR_BGR2HSV));
Platform.runLater(new Runnable(){
@Override
public void run()
{
frameView.setImage(tmp);
frameView2.setImage(tmp3);
}
});
}
};
this.timer = new Timer();
this.timer.schedule(FrameGrabber,0,33);
this.start_b.setText("Stop Camera");
}
else
{
this.start_b.setText("Start Camera");
//arrete le timer
if(this.timer!=null)
{
this.timer.cancel();
this.timer = null;
}
//realease camera
this.capture.release();
//efface le contenaire d'image
frameView.setImage(null);
frameView2.setImage(null);
}
}
}
private Image grabFrame(int img)
{
Image imageToShow =null;//init
Mat frame = new Mat();// cree une matrice
//checker si la capture est ouverte
if(this.capture.isOpened())
{
try{
this.capture.read(frame);//lire le frame courant
//test si le frame est vide
if(!frame.empty())
{
//convertire l'image au gris
Imgproc.cvtColor(frame, frame,img);
//convertir la Mat (objet) a Image (javaFx)
imageToShow = mat2Image(frame);
}
}catch(Exception e){System.err.println("ERROR: "+e.getMessage());}
}
return imageToShow;
}
private Mat grabMat(int img)
{
Image imageToShow =null;//init
Mat frame = new Mat();// cree une matrice
//checker si la capture est ouverte
if(this.capture.isOpened())
{
try{
this.capture.read(frame);//lire le frame courant
//test si le frame est vide
if(!frame.empty())
{
//convertire l'image au gris
Imgproc.cvtColor(frame, frame,img);
//convertir la Mat (objet) a Image (javaFx)
}
}catch(Exception e){System.err.println("ERROR: "+e.getMessage());}
}
return frame;
}
private Image matToThresHolded(Mat frame)
{ Image thresHoldedImg =null;
Mat dFrame = new Mat();
Imgproc.threshold(frame, dFrame, 127, 255,Imgproc.THRESH_TOZERO);
thresHoldedImg=mat2Image(dFrame);
return thresHoldedImg;
}
private Image mat2Image (Mat frame)
{ //cree un buffer temporaire
MatOfByte buffer = new MatOfByte();
//encode le frame dans le buffer
Highgui.imencode(".png",frame, buffer);
//construire et retourne une image cree depuis l'image encode dans le buffer
return new Image(new ByteArrayInputStream(buffer.toArray()));
}
public void setRootElement(Pane root)
{
this.rootElement = root;
}
public Image colorDetection(Mat hsvImage)
{
Image imageToShow=null;
Mat threshedImg =new Mat();
//Scalar hsvMin=new Scalar(106,60,90,0);//red
//Scalar hsvMax=new Scalar(124,255,255,0);//red
Scalar hsvMin=new Scalar(100,150,100);//bleu
Scalar hsvMax=new Scalar(140,255,255);//bleu
Core.inRange(hsvImage,hsvMin, hsvMax, threshedImg);
imageToShow = mat2Image(threshedImg);
return imageToShow;
}
public Image newColorDetection(Mat hsv)
{
Image imageToShow=null;
Mat threshedImg =new Mat();
Mat threshedImg2 =new Mat();
Scalar hsvMin = new Scalar(0, 50, 50, 0);//red
Scalar hsvMax = new Scalar(6, 255, 255, 0);//red
Scalar hsvMin2 = new Scalar(175, 50, 50, 0);//red
Scalar hsvMax2 = new Scalar(179, 255, 255, 0);//red
//Scalar hsvMin=new Scalar(100,150,100);//bleu
//Scalar hsvMax=new Scalar(140,255,255);//bleu
//Scalar hsvMin=new Scalar(h-tolerance-1, s-tolerance, 0);//default
//Scalar hsvMax=new Scalar(h+tolerance-1, s+tolerance,255);//default
Core.inRange(hsv,hsvMin,hsvMax,threshedImg);
Core.inRange(hsv, hsvMin2, hsvMax2, threshedImg2);
Core.bitwise_or(threshedImg, threshedImg2, threshedImg);
// dilate et erosion pour renforce l'image et supprime les pixels lmcheyrin
Mat dilate = Imgproc.getStructuringElement(Imgproc.MORPH_DILATE, new Size(3, 3));
Imgproc.dilate(threshedImg, threshedImg, dilate);//dilate
Mat erode = Imgproc.getStructuringElement(Imgproc.MORPH_ERODE, new Size(3, 3));
Imgproc.erode(threshedImg, threshedImg, erode);
List<MatOfPoint> contours = new ArrayList<MatOfPoint>();
Imgproc.findContours(threshedImg, contours, new Mat(), Imgproc.RETR_LIST,Imgproc.CHAIN_APPROX_SIMPLE);
imageToShow = mat2Image(threshedImg);
return imageToShow;
}
}
我的主要
package application;
import org.opencv.core.Core;
import javafx.application.Application;
import javafx.stage.Stage;
import javafx.scene.Scene;
import javafx.scene.layout.BorderPane;
import javafx.fxml.FXMLLoader;
public class Main extends Application {
@Override
public void start(Stage primaryStage) {
try {
FXMLLoader loader = new FXMLLoader(getClass().getResource("FristProjectFX.fxml"));
BorderPane root = (BorderPane)loader.load();
Scene scene = new Scene(root);
scene.getStylesheets().add(getClass().getResource("application.css").toExternalForm());
primaryStage.setTitle("JavaFx YO!");
primaryStage.setAlwaysOnTop(true);
primaryStage.setScene(scene);
primaryStage.show();//show GUI
FxController controller = loader.getController();
controller.setRootElement(root);
} catch(Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
System.loadLibrary(Core.NATIVE_LIBRARY_NAME);
launch(args);
}
}
这就是我得到的
就像你在下面的图片中看到的那样，当我点击红色区域时，我没有得到红色代码甚至是其他颜色。
我的期望是
1 个答案:
答案 0 :(得分：2)
我找到了第一个问题的解决方案
frameView.setOnMouseClicked(Event->{Mat m= new Mat();
double[] pixel=new double[3];
float[] hsv = new float[3];
grabMat(0).convertTo(m, CvType.CV_8U);
Imgproc.cvtColor(m, m, Imgproc.COLOR_BGR2RGB, 3);
pixel=m.get((int)Event.getX(),(int)Event.getY());
red=pixel[0];
green=pixel[1];
bleu=pixel[2];
System.out.println("X= "+Event.getX()+"Y="+Event.getY()+"---red= "+red+"---bleu= "+bleu+"---green= "+green);
hsv=java.awt.Color.RGBtoHSB((int)red,(int)green,(int)bleu, null);
h= hsv[0];
s=hsv[1];
v=hsv[2];
System.out.println("h= "+h+"---s= "+s+"---v= "+v);
});
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