package com.example.opencv_open_camera_vedio;import java.util.ArrayList;import java.util.List;import org.opencv.android.BaseLoaderCallback;import org.opencv.android.CameraBridgeViewBase;import org.opencv.android.CameraBridgeViewBase.CvCameraViewFrame;import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2;import org.opencv.android.LoaderCallbackInterface;import org.opencv.android.OpenCVLoader;import org.opencv.core.Core;import org.opencv.core.CvType;import org.opencv.core.Mat;import org.opencv.core.MatOfFloat;import org.opencv.core.MatOfInt;import org.opencv.core.Rect;import org.opencv.core.RotatedRect;import org.opencv.core.Scalar;import org.opencv.core.TermCriteria;import org.opencv.imgproc.Imgproc;import org.opencv.samples.colorblobdetect.R;import org.opencv.video.Video;import android.app.Activity;import android.os.Bundle;import android.view.MotionEvent;import android.view.View;import android.view.View.OnClickListener;import android.view.View.OnTouchListener;import android.view.Window;import android.view.WindowManager;import android.widget.Button;import android.widget.SeekBar;import android.widget.SeekBar.OnSeekBarChangeListener;import android.widget.Toast;/** *  * @author Jack_ZGM *  */public class MyTracker extends Activity implements OnTouchListener,		CvCameraViewListener2 {	// 公共模块	private CameraBridgeViewBase mOpenCvCameraView;	private Scalar mColor;	private Mat mRgba;	// 跟踪模块	private boolean mIsColorSelected = false;	private int winWidth = 130;	private MatOfFloat rangesH, rangesS, rangesV;// HSV限定值范围	private MatOfInt chansH, chansS, chansV;// 分别代表h、s、v通道	private int H_Min = 0, H_Max = 180;	private int S_Min = 0, S_Max = 180;	private int V_Min = 0, V_Max = 180;	private Mat mHist;	private RotatedRect mRect;	private Mat mHue;	private Rect mTrackWindow;	private Mat mHueImage;	private List
    
      planes;	private MatOfInt histSize;	private Mat backproject;	private ArrayList
     
       images;	private MatOfInt moi;	private MatOfFloat mof;	private TermCriteria term;	private SeekBar HminBar, HmaxBar;	private SeekBar SminBar, SmaxBar;	private SeekBar VminBar, VmaxBar;	private SeekBar trackBox;	// 转换摄像头	private boolean chgCam = false;	private Button chg_camBtn;	private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) {		@Override		public void onManagerConnected(int status) {			switch (status) {			case LoaderCallbackInterface.SUCCESS: {				mOpenCvCameraView.enableView();				mOpenCvCameraView.setOnTouchListener(MyTracker.this);			}				break;			default: {				super.onManagerConnected(status);			}				break;			}		}	};	public Mat onCameraFrame(CvCameraViewFrame inputFrame) {		mRgba = inputFrame.rgba();		if (mIsColorSelected) {			// 获取hsv颜色空间			if (mHueImage == null)				mHueImage = new Mat(mRgba.size(), mRgba.type());			Imgproc.cvtColor(mRgba, mHueImage, Imgproc.COLOR_RGB2HSV);			// 获取hsv中的hue分量			Core.extractChannel(mHueImage, mHue, 0);			rangesH = new MatOfFloat(H_Min, H_Max);			rangesS = new MatOfFloat(S_Min, S_Max);			rangesV = new MatOfFloat(V_Min, V_Max);			planes.add(mHueImage);			// 得到直方图			// Imgproc.calcHist(planes, chans0, new Mat(), mHist, histSize,			// ranges);			Imgproc.calcHist(planes, chansH, new Mat(), mHist, histSize,					rangesH);			Imgproc.calcHist(planes, chansS, new Mat(), mHist, histSize,					rangesS);			Imgproc.calcHist(planes, chansV, new Mat(), mHist, histSize,					rangesV);			// 直方图标准化			Core.normalize(mHist, mHist, 0, 255, Core.NORM_MINMAX);			// 反向投影图			images.add(mHue);			Imgproc.calcBackProject(images, moi, mHist, backproject, mof, 1.0);			// 获取跟踪框并用椭圆轮廓画出来			mRect = Video.CamShift(backproject, mTrackWindow, term);			Imgproc.ellipse(mRgba, mRect, mColor);			// 通知系统释放内存,但不是实时的，所以并没什么用？			System.gc();		} else {			mHue = new Mat(mRgba.size(), CvType.CV_8UC1);			backproject = mHue;		}		if (mRect != null) {			int y = (int) mRect.center.y - winWidth / 2;			int x = (int) mRect.center.x - winWidth / 2;			mTrackWindow.x = x;			mTrackWindow.y = y;			mTrackWindow.width = winWidth;			mTrackWindow.height = winWidth;		}		return mRgba;	}	public void onCameraViewStarted(int width, int height) {		// 公共模块		mColor = new Scalar(255, 0, 0);		// 跟踪模块		mTrackWindow = new Rect();		mHist = new Mat();		planes = new ArrayList
      
       ();		// 设置hsv通道		chansH = new MatOfInt(0);		chansS = new MatOfInt(1);		chansV = new MatOfInt(2);		histSize = new MatOfInt(10);		images = new ArrayList
       
        ();		// 用H分量作为跟踪对象.其余两个做限定条件提高跟踪准确率		moi = chansH;		mof = new MatOfFloat(0, 180);		term = new TermCriteria(TermCriteria.COUNT, 200, 1);	}	public boolean onTouch(View v, MotionEvent event) {		int cols = mRgba.cols();		int rows = mRgba.rows();		int xOffset = (mOpenCvCameraView.getWidth() - cols) / 2;		int yOffset = (mOpenCvCameraView.getHeight() - rows) / 2;		int x = (int) event.getX() - xOffset;		int y = (int) event.getY() - yOffset;		if ((x < 0) || (y < 0) || (x > cols) || (y > rows))			return false;		mTrackWindow = new Rect(x - winWidth / 2, y - winWidth / 2, winWidth,				winWidth);		mIsColorSelected = true;		return false; // don't need subsequent touch events	}	@Override	public void onCreate(Bundle savedInstanceState) {		super.onCreate(savedInstanceState);		requestWindowFeature(Window.FEATURE_NO_TITLE);		getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON);		setContentView(R.layout.color_blob_detection_surface_view);		mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.color_blob_detection_activity_surface_view);		mOpenCvCameraView.setCvCameraViewListener(this);		mOpenCvCameraView.setCameraIndex(CameraBridgeViewBase.CAMERA_ID_FRONT);		// mOpenCvCameraView.setCameraIndex(CameraBridgeViewBase.CAMERA_ID_BACK);		// 获取滚动条,通过设置滑动条监听改变v通道值的范围		MyseekbarListener sbListen = new MyseekbarListener();		// H		HminBar = (SeekBar) findViewById(R.id.HseekBarMin);		HmaxBar = (SeekBar) findViewById(R.id.HseekBarMax);		HminBar.setOnSeekBarChangeListener(sbListen);		HmaxBar.setOnSeekBarChangeListener(sbListen);		// S		SminBar = (SeekBar) findViewById(R.id.SseekBarMin);		SmaxBar = (SeekBar) findViewById(R.id.SseekBarMax);		SminBar.setOnSeekBarChangeListener(sbListen);		SmaxBar.setOnSeekBarChangeListener(sbListen);		// V		VminBar = (SeekBar) findViewById(R.id.VseekBarMin);		VmaxBar = (SeekBar) findViewById(R.id.VseekBarMax);		VminBar.setOnSeekBarChangeListener(sbListen);		VmaxBar.setOnSeekBarChangeListener(sbListen);		// 可设置跟踪框的大小		trackBox = (SeekBar) findViewById(R.id.seekBarTracBox);		trackBox.setOnSeekBarChangeListener(sbListen);		// 摄像头转换按钮		MyOnClickListen click = new MyOnClickListen();		chg_camBtn = (Button) findViewById(R.id.chg_cam);		chg_camBtn.setOnClickListener(click);	}	// 按钮监听器	class MyOnClickListen implements OnClickListener {		@Override		public void onClick(View v) {			if (v.equals(chg_camBtn)) {				if (chgCam) {					mOpenCvCameraView							.setCameraIndex(CameraBridgeViewBase.CAMERA_ID_FRONT);				} else {					mOpenCvCameraView							.setCameraIndex(CameraBridgeViewBase.CAMERA_ID_BACK);				}				chgCam = !chgCam;			}		}	}	// 创建一个滑动条监听内部类	class MyseekbarListener implements OnSeekBarChangeListener {		@Override		public void onProgressChanged(SeekBar sb, int progress, boolean arg2) {			// H			if (sb.equals(HminBar)) {				if (progress < H_Max)					H_Min = progress;				else {					Toast.makeText(getApplicationContext(),							"H分量设置错误:H_Min必须小于H_Max", Toast.LENGTH_SHORT)							.show();				}			}			if (sb.equals(HmaxBar)) {				if (progress > H_Min)					H_Max = progress;				else {					Toast.makeText(getApplicationContext(),							"H分量设置错误:H_Min必须小于H_Max", Toast.LENGTH_SHORT)							.show();				}			}			// S			if (sb.equals(SminBar)) {				if (progress < S_Max)					S_Min = progress;				else {					Toast.makeText(getApplicationContext(),							"S分量设置错误:S_Min必须小于S_Max", Toast.LENGTH_SHORT)							.show();				}			}			if (sb.equals(SmaxBar)) {				if (progress > S_Min)					S_Max = progress;				else {					Toast.makeText(getApplicationContext(),							"S分量设置错误:S_Min必须小于S_Max", Toast.LENGTH_SHORT)							.show();				}			}			// V			if (sb.equals(VminBar)) {				if (progress < V_Max)					V_Min = progress;				else {					Toast.makeText(getApplicationContext(),							"V分量设置错误:V_Min必须小于V_Max", Toast.LENGTH_SHORT)							.show();				}			}			if (sb.equals(VmaxBar)) {				if (progress > V_Min)					V_Max = progress;				else {					Toast.makeText(getApplicationContext(),							"V分量设置错误:V_Min必须小于V_Max", Toast.LENGTH_SHORT)							.show();				}			}			if (sb.equals(trackBox)) {				if (progress > 0)					winWidth = progress;			}		}		@Override		public void onStartTrackingTouch(SeekBar arg0) {		}		@Override		public void onStopTrackingTouch(SeekBar arg0) {		}	}	@Override	public void onPause() {		super.onPause();		if (mOpenCvCameraView != null)			mOpenCvCameraView.disableView();	}	@Override	public void onResume() {		super.onResume();		OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_9, this,				mLoaderCallback);	}	public void onDestroy() {		super.onDestroy();		if (mOpenCvCameraView != null)			mOpenCvCameraView.disableView();	}	public void onCameraViewStopped() {		mRgba.release();	}}