标签:android des style blog http java color 使用
刚开始学习Android,由于之前比较熟悉OpenCV,于是就想先在Android上运行OpenCV试试
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1.环境配置
这部分网上很多,我就不再赘述了,可以参考:http://blog.csdn.net/pwh0996/article/details/8957764
2.开发准备
两点注意
public class MainActivity extends Activity implements CvCameraViewListener2 { private static final String TAG = "OCVSample::Activity"; private CameraBridgeViewBase mOpenCvCameraView; private boolean mIsJavaCamera = true; private MenuItem mItemSwitchCamera = null; private Mat mRgba; private Button mBtn = null; private boolean isProcess = false; //建立连接 private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) { @Override public void onManagerConnected(int status) { switch (status) { case LoaderCallbackInterface.SUCCESS: { Log.i(TAG, "OpenCV loaded successfully"); mOpenCvCameraView.enableView(); } break; default: { super.onManagerConnected(status); } break; } } }; //构造函数 public MainActivity() { Log.i(TAG, "Instantiated new " + this.getClass()); } /** Called when the activity is first created. */ //onCreate函数 @Override public void onCreate(Bundle savedInstanceState) { Log.i(TAG, "called onCreate"); super.onCreate(savedInstanceState); getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); setContentView(R.layout.activity_main); // if (mIsJavaCamera) mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial1_activity_java_surface_view); else mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial1_activity_native_surface_view); mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE); mOpenCvCameraView.setCvCameraViewListener(this); mBtn = (Button) findViewById(R.id.buttonGray); mBtn.setOnClickListener(new View.OnClickListener(){ @Override public void onClick(View v) { isProcess = !isProcess; } }); } @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(); } @Override public boolean onCreateOptionsMenu(Menu menu) { Log.i(TAG, "called onCreateOptionsMenu"); mItemSwitchCamera = menu.add("Toggle Native/Java camera"); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { String toastMesage = new String(); Log.i(TAG, "called onOptionsItemSelected; selected item: " + item); if (item == mItemSwitchCamera) { mOpenCvCameraView.setVisibility(SurfaceView.GONE); mIsJavaCamera = !mIsJavaCamera; if (mIsJavaCamera) { mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial1_activity_java_surface_view); toastMesage = "Java Camera"; } else { mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial1_activity_native_surface_view); toastMesage = "Native Camera"; } mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE); mOpenCvCameraView.setCvCameraViewListener(this); mOpenCvCameraView.enableView(); Toast toast = Toast.makeText(this, toastMesage, Toast.LENGTH_LONG); toast.show(); } return true; } public void onCameraViewStarted(int width, int height) { mRgba = new Mat(height, width, CvType.CV_8UC4); } public void onCameraViewStopped() { mRgba.release(); } public Mat onCameraFrame(CvCameraViewFrame inputFrame) { if(isProcess) Imgproc.cvtColor(inputFrame.gray(), mRgba, Imgproc.COLOR_GRAY2RGBA, 4); else mRgba = inputFrame.rgba(); return mRgba; } }
<uses-permission android:name="android.permission.CAMERA"/>
mCamera.setDisplayOrientation(90);在OpenCV for Android的开发中,在Manifest文件中加入:
android:screenOrientation="landscape" android:configChanges="keyboardHidden|orientation"
<?xml version="1.0" encoding="utf-8"?> <manifest xmlns:android="http://schemas.android.com/apk/res/android" package="com.example.camera03" android:versionCode="1" android:versionName="1.0" > <supports-screens android:resizeable="true" android:smallScreens="true" android:normalScreens="true" android:largeScreens="true" android:anyDensity="true" /> <uses-sdk android:minSdkVersion="9" android:targetSdkVersion="19" /> <uses-permission android:name="android.permission.CAMERA"/> <application android:allowBackup="true" android:icon="@drawable/ic_launcher" android:label="@string/app_name" android:theme="@android:style/Theme.NoTitleBar.Fullscreen" > <activity android:name="com.example.camera03.MainActivity" android:label="@string/app_name" android:screenOrientation="landscape" android:configChanges="keyboardHidden|orientation"> <intent-filter> <action android:name="android.intent.action.MAIN" /> <category android:name="android.intent.category.LAUNCHER" /> </intent-filter> </activity> </application> </manifest>
package com.example.camera03; import java.util.Arrays; import org.opencv.android.BaseLoaderCallback; import org.opencv.android.CameraBridgeViewBase.CvCameraViewFrame; 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.Point; import org.opencv.core.Scalar; import org.opencv.core.Size; import org.opencv.imgproc.Imgproc; import org.opencv.android.CameraBridgeViewBase; import org.opencv.android.CameraBridgeViewBase.CvCameraViewListener2; import android.app.Activity; import android.os.Bundle; import android.util.Log; import android.view.Menu; import android.view.MenuItem; import android.view.SurfaceView; import android.view.View; import android.view.WindowManager; import android.widget.Button; import android.widget.Toast; public class MainActivity extends Activity implements CvCameraViewListener2 { private static final String TAG = "OCVSample::Activity"; private CameraBridgeViewBase mOpenCvCameraView; private boolean mIsJavaCamera = true; private MenuItem mItemSwitchCamera = null; private Mat mRgba; private Mat mGray; private Mat mTmp; private Size mSize0; private Mat mIntermediateMat; private MatOfInt mChannels[]; private MatOfInt mHistSize; private int mHistSizeNum = 25; private Mat mMat0; private float[] mBuff; private MatOfFloat mRanges; private Point mP1; private Point mP2; private Scalar mColorsRGB[]; private Scalar mColorsHue[]; private Scalar mWhilte; private Mat mSepiaKernel; private Button mBtn = null; private int mProcessMethod = 0; private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback(this) { @Override public void onManagerConnected(int status) { switch (status) { case LoaderCallbackInterface.SUCCESS: { Log.i(TAG, "OpenCV loaded successfully"); mOpenCvCameraView.enableView(); } break; default: { super.onManagerConnected(status); } break; } } }; public MainActivity() { Log.i(TAG, "Instantiated new " + this.getClass()); } /** Called when the activity is first created. */ @Override public void onCreate(Bundle savedInstanceState) { Log.i(TAG, "called onCreate"); super.onCreate(savedInstanceState); getWindow().addFlags(WindowManager.LayoutParams.FLAG_KEEP_SCREEN_ON); setContentView(R.layout.activity_main); if (mIsJavaCamera) mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial1_activity_java_surface_view); else mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial1_activity_native_surface_view); mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE); mOpenCvCameraView.setCvCameraViewListener(this); mBtn = (Button) findViewById(R.id.buttonGray); mBtn.setOnClickListener(new View.OnClickListener(){ @Override public void onClick(View v) { mProcessMethod++; if(mProcessMethod>8) mProcessMethod=0; } }); } @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(); } @Override public boolean onCreateOptionsMenu(Menu menu) { Log.i(TAG, "called onCreateOptionsMenu"); mItemSwitchCamera = menu.add("Toggle Native/Java camera"); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { String toastMesage = new String(); Log.i(TAG, "called onOptionsItemSelected; selected item: " + item); if (item == mItemSwitchCamera) { mOpenCvCameraView.setVisibility(SurfaceView.GONE); mIsJavaCamera = !mIsJavaCamera; if (mIsJavaCamera) { mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial1_activity_java_surface_view); toastMesage = "Java Camera"; } else { mOpenCvCameraView = (CameraBridgeViewBase) findViewById(R.id.tutorial1_activity_native_surface_view); toastMesage = "Native Camera"; } mOpenCvCameraView.setVisibility(SurfaceView.VISIBLE); mOpenCvCameraView.setCvCameraViewListener(this); mOpenCvCameraView.enableView(); Toast toast = Toast.makeText(this, toastMesage, Toast.LENGTH_LONG); toast.show(); } return true; } public void onCameraViewStarted(int width, int height) { mRgba = new Mat(height, width, CvType.CV_8UC4); mGray = new Mat(height, width, CvType.CV_8UC1); mTmp = new Mat(height, width, CvType.CV_8UC4); mIntermediateMat = new Mat(); mSize0 = new Size(); mChannels = new MatOfInt[] { new MatOfInt(0), new MatOfInt(1), new MatOfInt(2) }; mBuff = new float[mHistSizeNum]; mHistSize = new MatOfInt(mHistSizeNum); mRanges = new MatOfFloat(0f, 256f); mMat0 = new Mat(); mColorsRGB = new Scalar[] { new Scalar(200, 0, 0, 255), new Scalar(0, 200, 0, 255), new Scalar(0, 0, 200, 255) }; mColorsHue = new Scalar[] { new Scalar(255, 0, 0, 255), new Scalar(255, 60, 0, 255), new Scalar(255, 120, 0, 255), new Scalar(255, 180, 0, 255), new Scalar(255, 240, 0, 255), new Scalar(215, 213, 0, 255), new Scalar(150, 255, 0, 255), new Scalar(85, 255, 0, 255), new Scalar(20, 255, 0, 255), new Scalar(0, 255, 30, 255), new Scalar(0, 255, 85, 255), new Scalar(0, 255, 150, 255), new Scalar(0, 255, 215, 255), new Scalar(0, 234, 255, 255), new Scalar(0, 170, 255, 255), new Scalar(0, 120, 255, 255), new Scalar(0, 60, 255, 255), new Scalar(0, 0, 255, 255), new Scalar(64, 0, 255, 255), new Scalar(120, 0, 255, 255), new Scalar(180, 0, 255, 255), new Scalar(255, 0, 255, 255), new Scalar(255, 0, 215, 255), new Scalar(255, 0, 85, 255), new Scalar(255, 0, 0, 255) }; mWhilte = Scalar.all(255); mP1 = new Point(); mP2 = new Point(); // Fill sepia kernel mSepiaKernel = new Mat(4, 4, CvType.CV_32F); mSepiaKernel.put(0, 0, /* R */0.189f, 0.769f, 0.393f, 0f); mSepiaKernel.put(1, 0, /* G */0.168f, 0.686f, 0.349f, 0f); mSepiaKernel.put(2, 0, /* B */0.131f, 0.534f, 0.272f, 0f); mSepiaKernel.put(3, 0, /* A */0.000f, 0.000f, 0.000f, 1f); } public void onCameraViewStopped() { mRgba.release(); mGray.release(); mTmp.release(); } public Mat onCameraFrame(CvCameraViewFrame inputFrame) { mRgba = inputFrame.rgba(); Size sizeRgba = mRgba.size(); int rows = (int) sizeRgba.height; int cols = (int) sizeRgba.width; Mat rgbaInnerWindow; int left = cols / 8; int top = rows / 8; int width = cols * 3 / 4; int height = rows * 3 / 4; //灰度图 if(mProcessMethod==1) Imgproc.cvtColor(inputFrame.gray(), mRgba, Imgproc.COLOR_GRAY2RGBA, 4); //Canny边缘检测 else if(mProcessMethod==2) { mRgba = inputFrame.rgba(); Imgproc.Canny(inputFrame.gray(), mTmp, 80, 100); Imgproc.cvtColor(mTmp, mRgba, Imgproc.COLOR_GRAY2RGBA, 4); } //Hist else if(mProcessMethod==3) { Mat hist = new Mat(); int thikness = (int) (sizeRgba.width / (mHistSizeNum + 10) / 5); if(thikness > 5) thikness = 5; int offset = (int) ((sizeRgba.width - (5*mHistSizeNum + 4*10)*thikness)/2); // RGB for(int c=0; c<3; c++) { Imgproc.calcHist(Arrays.asList(mRgba), mChannels[c], mMat0, hist, mHistSize, mRanges); Core.normalize(hist, hist, sizeRgba.height/2, 0, Core.NORM_INF); hist.get(0, 0, mBuff); for(int h=0; h<mHistSizeNum; h++) { mP1.x = mP2.x = offset + (c * (mHistSizeNum + 10) + h) * thikness; mP1.y = sizeRgba.height-1; mP2.y = mP1.y - 2 - (int)mBuff[h]; Core.line(mRgba, mP1, mP2, mColorsRGB[c], thikness); } } // Value and Hue Imgproc.cvtColor(mRgba, mTmp, Imgproc.COLOR_RGB2HSV_FULL); // Value Imgproc.calcHist(Arrays.asList(mTmp), mChannels[2], mMat0, hist, mHistSize, mRanges); Core.normalize(hist, hist, sizeRgba.height/2, 0, Core.NORM_INF); hist.get(0, 0, mBuff); for(int h=0; h<mHistSizeNum; h++) { mP1.x = mP2.x = offset + (3 * (mHistSizeNum + 10) + h) * thikness; mP1.y = sizeRgba.height-1; mP2.y = mP1.y - 2 - (int)mBuff[h]; Core.line(mRgba, mP1, mP2, mWhilte, thikness); } } //inner Window Sobel else if(mProcessMethod==4) { Mat gray = inputFrame.gray(); Mat grayInnerWindow = gray.submat(top, top + height, left, left + width); rgbaInnerWindow = mRgba.submat(top, top + height, left, left + width); Imgproc.Sobel(grayInnerWindow, mIntermediateMat, CvType.CV_8U, 1, 1); Core.convertScaleAbs(mIntermediateMat, mIntermediateMat, 10, 0); Imgproc.cvtColor(mIntermediateMat, rgbaInnerWindow, Imgproc.COLOR_GRAY2BGRA, 4); grayInnerWindow.release(); rgbaInnerWindow.release(); } //SEPIA else if(mProcessMethod==5) { rgbaInnerWindow = mRgba.submat(top, top + height, left, left + width); Core.transform(rgbaInnerWindow, rgbaInnerWindow, mSepiaKernel); rgbaInnerWindow.release(); } //ZOOM else if(mProcessMethod==6) { Mat zoomCorner = mRgba.submat(0, rows / 2 - rows / 10, 0, cols / 2 - cols / 10); Mat mZoomWindow = mRgba.submat(rows / 2 - 9 * rows / 100, rows / 2 + 9 * rows / 100, cols / 2 - 9 * cols / 100, cols / 2 + 9 * cols / 100); Imgproc.resize(mZoomWindow, zoomCorner, zoomCorner.size()); Size wsize = mZoomWindow.size(); Core.rectangle(mZoomWindow, new Point(1, 1), new Point(wsize.width - 2, wsize.height - 2), new Scalar(255, 0, 0, 255), 2); zoomCorner.release(); mZoomWindow.release(); } //PIXELIZE else if(mProcessMethod==7) { rgbaInnerWindow = mRgba.submat(top, top + height, left, left + width); Imgproc.resize(rgbaInnerWindow, mIntermediateMat, mSize0, 0.1, 0.1, Imgproc.INTER_NEAREST); Imgproc.resize(mIntermediateMat, rgbaInnerWindow, rgbaInnerWindow.size(), 0., 0., Imgproc.INTER_NEAREST); rgbaInnerWindow.release(); } //POSTERIZE else if(mProcessMethod==8) { rgbaInnerWindow = mRgba.submat(top, top + height, left, left + width); Imgproc.Canny(rgbaInnerWindow, mIntermediateMat, 80, 90); rgbaInnerWindow.setTo(new Scalar(0, 0, 0, 255), mIntermediateMat); Core.convertScaleAbs(rgbaInnerWindow, mIntermediateMat, 1./16, 0); Core.convertScaleAbs(mIntermediateMat, rgbaInnerWindow, 16, 0); rgbaInnerWindow.release(); } else mRgba = inputFrame.rgba(); return mRgba; } }
Android学习——在Android中使用OpenCV的第一个程序,布布扣,bubuko.com
Android学习——在Android中使用OpenCV的第一个程序
标签:android des style blog http java color 使用
原文地址:http://blog.csdn.net/yangtrees/article/details/38279351