android opencv 图像识别 源码下载

package com.example.opencvdemo;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.android.Utils;import org.opencv.core.Mat;import android.annotation.SuppressLint;import android.app.Activity;import android.graphics.Bitmap;import android.graphics.Bitmap.Config;import android.os.Bundle;import android.os.Handler;import android.os.Message;import android.view.View;import android.view.View.OnClickListener;import android.widget.Button;import android.widget.ImageView;import android.widget.TextView;public class MainActivity extends Activity implements CvCameraViewListener2 {/** * 展示原图和对比图 */private ImageView iv1, iv2;/** * 原图和对比图 */private Bitmap bmp1, bmp2;/** * 拍摄原图、拍摄对比图、对比、自动对比 */private Button pz1, pz2, db, zddb;/** * 显示相似度（完全相同值为1） */private TextView tv;/** * CV相机 */private CameraBridgeViewBase mCVCamera;/** * 加载OpenCV的回调 */private BaseLoaderCallback mLoaderCallback;/** * 拍照状态 0:不拍照 ，1:拍原图，2:拍对比图，3:拍对比图并自动对比 */private int isTakePhoto = 0;/** * 用于定时执行图片对比 */private Handler handler;@Overrideprotected void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.activity_main);// 初始化init();}@SuppressLint("HandlerLeak")private void init() {// 初始化iv1 = (ImageView) findViewById(R.id.iv1);iv2 = (ImageView) findViewById(R.id.iv2);pz1 = (Button) findViewById(R.id.pz1);pz2 = (Button) findViewById(R.id.pz2);db = (Button) findViewById(R.id.db);zddb = (Button) findViewById(R.id.zddb);tv = (TextView) findViewById(R.id.tv);handler = new Handler() {@Overridepublic void handleMessage(Message msg) {super.handleMessage(msg);// 自动拍照并对比isTakePhoto = 3;}};OnClickListener btnOnClick = new OnClickListener() {@Overridepublic void onClick(View v) {switch (v.getId()) {case R.id.pz1:// 拍原图isTakePhoto = 1;break;case R.id.pz2:// 拍对比图isTakePhoto = 2;break;case R.id.db:hist();break;case R.id.zddb:// 拍对比图并自动对比isTakePhoto = 3;break;}}};// 设置点击事件pz1.setOnClickListener(btnOnClick);pz2.setOnClickListener(btnOnClick);db.setOnClickListener(btnOnClick);zddb.setOnClickListener(btnOnClick);// 初始化CV相机mCVCamera = (CameraBridgeViewBase) findViewById(R.id.cv);mCVCamera.setVisibility(CameraBridgeViewBase.VISIBLE);// 设置相机监听mCVCamera.setCvCameraViewListener(this);// 连接到OpenCV的回调mLoaderCallback = new BaseLoaderCallback(this) {@Overridepublic void onManagerConnected(int status) {switch (status) {case LoaderCallbackInterface.SUCCESS:mCVCamera.enableView();break;default:break;}}};}private void hist() {// 对比算法会耗时，导致页面卡顿，所以新开线程进行对比new Thread(new Runnable() {@Overridepublic void run() {// 对比final double target = HistUtils.comPareHist(bmp1, bmp2);MainActivity.this.runOnUiThread(new Runnable() {@Overridepublic void run() {// 将相似度显示在左上角tv.setText("相似度：" target);}});}}).start();}@Overridepublic void onCameraViewStarted(int width, int height) {}@Overridepublic void onCameraViewStopped() {}@Overridepublic Mat onCameraFrame(CvCameraViewFrame inputFrame) {// 相机拍摄每一帧的图像，都在此处理// 获取相机中的图像final Mat rgba = inputFrame.rgba();if (isTakePhoto != 0) {// 记录拍照状态final int who = isTakePhoto;// 重置拍照状态isTakePhoto = 0;// 要把Mat对象转换成Bitmap对象，需要创建一个宽高相同的Bitmap对象昨晚参数final Bitmap bmp = Bitmap.createBitmap(rgba.cols(), rgba.rows(),Config.RGB_565);// 记录要展示图片的ImageViewImageView iv = null;// Mat >>> BitmapUtils.matToBitmap(rgba, bmp);if (who == 1) {// 展示原图iv = iv1;bmp1 = bmp;} else if (who == 2) {// 展示对比图iv = iv2;bmp2 = bmp;} else {// 展示对比图iv = iv2;bmp2 = bmp;// 对比hist();// 每隔0.5秒对比一次handler.sendEmptyMessageDelayed(1, 500);}// 记录要展示图片的ImageViewfinal ImageView image = iv;runOnUiThread(new Runnable() {@Overridepublic void run() {// 展示拍到的图片image.setImageBitmap(bmp);if (bmp1 != null) {// 如果原图已经拍好了，那么可以进行自动对比，将自动对比按钮设置为可用zddb.setEnabled(true);if (bmp2 != null) {// 如果原图和对比图都已经拍好了，那么可以进行对比，将对比按钮设置为可用db.setEnabled(true);}}}});}// 将每一帧的图像展示在界面上return inputFrame.rgba();}@Overrideprotected void onResume() {// 界面加载完成的时候向OpenCV的连接回调发送连接成功的信号if (OpenCVLoader.initDebug()) {mLoaderCallback.onManagerConnected(LoaderCallbackInterface.SUCCESS);}super.onResume();}@Overrideprotected void onPause() {super.onPause();// 销毁OpenCV相机if (mCVCamera != null)mCVCamera.disableView();}}