私はandroidstudioでアプリを作ろうとしています。
現状はopencvを使って赤い領域を見つけその中心点を求めるところまでできています。
#問題
synchronized(sync) {}の中に入っている値(line)を同期させてテキストに表示させたいのですが同期できていなくて初期値のline=0のまま表示されてしまいます。どこが間違っているのでしょうか?
java
1package com.example.XXX.XXX; 2 3import android.app.Activity; 4import android.os.AsyncTask; 5import android.os.Bundle; 6import android.util.Log; 7import android.view.MenuItem; 8import android.view.SurfaceView; 9import android.view.WindowManager; 10import android.widget.TextView; 11 12import org.opencv.android.BaseLoaderCallback; 13import org.opencv.android.CameraBridgeViewBase; 14import org.opencv.android.LoaderCallbackInterface; 15import org.opencv.android.OpenCVLoader; 16import org.opencv.core.Core; 17import org.opencv.core.CvType; 18import org.opencv.core.Mat; 19import org.opencv.core.MatOfPoint; 20import org.opencv.core.MatOfPoint2f; 21import org.opencv.core.Point; 22import org.opencv.core.RotatedRect; 23import org.opencv.core.Scalar; 24import org.opencv.core.Size; 25import org.opencv.imgproc.Imgproc; 26 27 28import java.util.ArrayList; 29import java.util.List; 30 31 32 33public class MainActivity extends Activity implements CameraBridgeViewBase.CvCameraViewListener { 34 private static final String TAG = "OCVSample::Activity"; 35 36 int i =0; 37 String x="0"; 38 String y="0"; 39 40 String line = "0"; 41 private Object sync = new Object(); 42 43 44 45 private CameraBridgeViewBase mOpenCvCameraView; 46 private boolean mIsJavaCamera = true; 47 private MenuItem mItemSwitchCamera = null; 48 49 50 private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) { 51 @Override 52 public void onManagerConnected(int status) { 53 switch (status) { 54 // 読み込みが成功したらカメラプレビューを開始 55 case LoaderCallbackInterface.SUCCESS: 56 { 57 Log.i(TAG, "OpenCV loaded successfully"); 58 mOpenCvCameraView.enableView(); 59 } break; 60 default: { 61 super.onManagerConnected(status); 62 }break; 63 } 64 } 65 }; 66 67 public MainActivity() { 68 Log.i(TAG, "Instantiated new " + this.getClass()); 69 } 70 71 @Override 72 protected void onCreate(Bundle savedInstanceState) { 73 Log.i(TAG, "called onCreate"); 74 super.onCreate(savedInstanceState); 75 getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); 76 setContentView(R.layout.activity_main); 77 78 mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.camera_view); 79 80 mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE); 81 TextView textview = findViewById(R.id.text_view); 82 synchronized(sync) { 83 textview.setText(line); 84 } 85 //textview.setText("a"); 86 87 mOpenCvCameraView.setCvCameraViewListener(this); 88 } 89 90 @Override 91 protected void onPause() { 92 super.onPause(); 93 if (mOpenCvCameraView != null) 94 mOpenCvCameraView.disableView(); 95 } 96 97 @Override 98 protected void onResume() { 99 super.onResume(); 100 if (!OpenCVLoader.initDebug()) { 101 Log.d(TAG, "Internal OpenCV library not found. Using OpenCV Manager for initialization"); 102 OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_3_0_0, this, mLoaderCallback); 103 } else { 104 Log.d(TAG, "OpenCV library found inside package. Using it!"); 105 mLoaderCallback.onManagerConnected(LoaderCallbackInterface.SUCCESS); 106 } 107 } 108 109 110 @Override 111 protected void onDestroy() { 112 super.onDestroy(); 113 if (mOpenCvCameraView != null) 114 mOpenCvCameraView.disableView(); 115 } 116 117 118 @Override 119 public void onCameraViewStarted(int width, int height) {// カメラプレビュー開始時に呼ばれる 120 } 121 122 @Override 123 public void onCameraViewStopped() {// カメラプレビュー終了時に呼ばれる 124 } 125 126 @Override 127 public Mat onCameraFrame(Mat inputFrame) { 128 Mat src = inputFrame; 129 130 return src; 131 } 132 133 public Mat centerpoint (Mat src) { 134 135 Mat src1 = src.clone(); 136 Imgproc.cvtColor(src, src, Imgproc.COLOR_RGB2HSV);//HSVに変換 137 Imgproc.medianBlur(src, src, 5); 138 Core.inRange(src, new Scalar(150, 100, 100), new Scalar(180, 255, 255), src); 139 Mat hierarchy = Mat.zeros(new Size(5, 5), CvType.CV_8UC1); 140 List<MatOfPoint> contours = new ArrayList<MatOfPoint>(); 141 Imgproc.findContours(src, contours, hierarchy, Imgproc.RETR_EXTERNAL, Imgproc.CHAIN_APPROX_TC89_L1); 142 143 int index = -1; 144 double area = 0; 145 for (i = 0; i < contours.size(); i++) { 146 double tmp = Imgproc.contourArea(contours.get(i)); 147 if (area < tmp) { 148 area = tmp; 149 index = i; 150 } 151 } 152 if (index != -1) { 153 MatOfPoint ptmat = contours.get(index); 154 Scalar color = new Scalar(0, 200, 0); 155 MatOfPoint2f ptmat2 = new MatOfPoint2f(ptmat.toArray()); 156 RotatedRect bbox = Imgproc.minAreaRect(ptmat2); 157 Point point = bbox.center; 158 Imgproc.circle(src1, bbox.center, 5, color, -1); 159 x = String.valueOf(point.x); 160 y = String.valueOf(point.y); 161 synchronized(sync) { 162 line = x; 163 } 164 } 165 return src1; 166 } 167}
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