上文中讲述了两种在android平台中使用opencv的办法，这里我将使用的是opencvforandroid的方法，也就是直接使用opencv提供的Java的API，这种方法对开发者来说是比较简单省事的。由于算法原理在《银行卡号识别》中已经阐述过，这里不再详细介绍，直接上关键代码！
activity_main.xml
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="@drawable/backgroud"
android:paddingBottom="@dimen/activity_vertical_margin"
android:paddingLeft="@dimen/activity_horizontal_margin"
android:paddingRight="@dimen/activity_horizontal_margin"
android:paddingTop="@dimen/activity_vertical_margin"
tools:context="com.example.test.MainActivity" >
<!--
android:background="@drawable/bank"
-->
<ImageView
android:id="@+id/img_huaishi"
android:layout_width="250dp"
android:layout_height="160dp"
android:layout_alignParentTop="true"
android:layout_marginTop="208dp"
android:layout_marginLeft="41dp"
/>
<Button
android:id = "@+id/btn_gray_process"
android:layout_width = "70dp"
android:layout_height = "70dp"
android:background="@drawable/xiangji"
android:layout_below = "@id/img_huaishi"
android:layout_marginLeft="45dp"
android:layout_marginTop="47dp"
/>
<Button
android:id = "@+id/btn_pic"
android:layout_width = "70dp"
android:layout_height = "70dp"
android:background="@drawable/pic"
android:layout_below = "@id/img_huaishi"
android:layout_marginLeft="197dp"
android:layout_marginTop="47dp"
/>
<!-- <ImageView
android:id="@+id/title"
android:layout_width="220dp"
android:layout_height="wrap_content"
android:layout_alignParentRight="false"
android:layout_alignParentTop="true"
android:background="@drawable/title" /> -->
<TextView
android:id="@+id/mttext"
android:layout_width="wrap_content"
android:layout_height="40dp"
android:layout_below="@+id/btn_pic"
android:layout_marginTop="27dp"
android:text="*******************"
android:textColor="@android:color/black"
android:textSize="45px"
android:layout_marginLeft="50dp"
android:textStyle="bold"
/>
</RelativeLayout>
效果预览图（图片效果请自行下载图片添加）：
MainActivity.java
package com.example.test;
import java.io.File;
import org.opencv.android.BaseLoaderCallback;
import org.opencv.android.OpenCVLoader;
import org.opencv.android.Utils;
import org.opencv.core.CvType;
import org.opencv.core.Mat;
import org.opencv.core.Rect;
import org.opencv.core.Size;
import org.opencv.imgproc.Imgproc;
import org.opencv.ml.CvKNearest;
import android.annotation.SuppressLint;
import android.app.Activity;
import android.content.ClipData;
import android.content.ClipboardManager;
import android.content.Intent;
import android.content.pm.ApplicationInfo;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.Bitmap.Config;
import android.graphics.BitmapFactory;
import android.net.Uri;
import android.os.Bundle;
import android.os.Environment;
import android.provider.MediaStore;
import android.util.Log;
import android.view.Menu;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;
@SuppressLint("NewApi") public class MainActivity extends Activity {
//手机相册or手机相机相关参数
private static int RESULT_LOAD_IMAGE = 1;
int hehe = 0;
int jisuan = 0;
int error = 0;
Button btnPic;
Button btnProcess;
Bitmap srcBitmap;
Bitmap grayBitmap;
Bitmap tempBitmap;
ImageView imgHuaishi;
private static boolean flag = false ;
private static boolean isFirst = true ;
private static final String TAG = "MyLogcat" ;
int numX1 = 0, numX2 = 0;
int aa[], bb[];
int bankX[];//19个银行卡号的位置信息----x
int bankNum[];//19个银行卡号
int classes = 10, train_samples = 1, K = 1;
int new_width = 32;
int new_height = 32;
CvKNearest knn;
Mat trainData, trainClasses;
//OpenCV库加载并初始化成功后的回调函数
private BaseLoaderCallback mLoaderCallback = new BaseLoaderCallback( this ) {
@Override
public void onManagerConnected( int status) {
// TODO Auto-generated method stub
switch (status){
case BaseLoaderCallback.SUCCESS:
Log.i(TAG, "成功加载" );
break ;
default :
super .onManagerConnected(status);
Log.i(TAG, "加载失败" );
break ;
}
}
};
@Override
protected void onCreate(Bundle savedInstanceState) {
super .onCreate(savedInstanceState);
setContentView(R.layout.activity_main);
initUI();
//procSrc2Gray();
pretreatment();//测试用
btnProcess.setOnClickListener( new ProcessClickListener());
btnPic.setOnClickListener( new ProcessPicClickListener());
}
@Override
public boolean onCreateOptionsMenu(Menu menu) {
getMenuInflater().inflate(R.menu.main, menu);
return true ;
}
public void initUI(){
btnProcess = (Button)findViewById(R.id.btn_gray_process);
btnPic = (Button)findViewById(R.id.btn_pic);
imgHuaishi = (ImageView)findViewById(R.id.img_huaishi);
Log.i(TAG, "initUI sucess..." );
aa = new int[18];
bb = new int[18];
for(int i = 0; i < 18; ++i)
{
aa[i] = 0;
bb[i] = 0;
}
bankX = new int[18];
bankNum = new int[18];
tempBitmap = getRes("shuai");
this.imgHuaishi.setImageBitmap(tempBitmap);
}
public Bitmap getRes(String name) {//获得res文件夹下的图片，得到bmp图片
ApplicationInfo appInfo = getApplicationInfo();
int resID = getResources().getIdentifier(name, "drawable", appInfo.packageName);
return BitmapFactory.decodeResource(getResources(), resID);
}
void getData()
{//训练集的生成与保存
Mat src_image = new Mat();
Mat prs_image = new Mat(new Size(new_width, new_height),CvType.CV_8UC1);
//Mat prs_image = new Mat();
Mat row = new Mat(),data = new Mat(),rowb = new Mat(),datab = new Mat();
int x,y;
int c = 0;
int cc = 0;
int i,j,k = 0;
int m = 0,n = 0;
for (m = 0; m < classes; m++)
{
for (n = 0; n < train_samples; n++)
{
String name = "a" + String.valueOf(m) + String.valueOf(n);
Bitmap bmp = getRes(name);
if (bmp == null)
{
System.out.println("NULL Image");
}
Utils.bitmapToMat(bmp, src_image);
/*src_image = Highgui.imread("/assets/a00.bmp");
if (src_image == null)
{
System.out.println("NULL Image");
}*/
//System.out.println(String.valueOf(src_image.width()));
//System.out.println(String.valueOf(src_image.channels()));
Mat grayMat = new Mat(); //灰度图
Mat binaryMat = new Mat(); //二值化图
Mat mytemp = new Mat(new Size(new_width, new_height),CvType.CV_8U);
Imgproc.cvtColor(src_image, grayMat, Imgproc.COLOR_RGBA2GRAY); //rgbMat to gray grayMat
Imgproc.threshold(grayMat, binaryMat, 100, 255, Imgproc.THRESH_BINARY);//二值化
//binaryMat = changeMat(binaryMat);
binaryMat.copyTo(prs_image);
Imgproc.resize(prs_image, mytemp, new Size(new_width, new_height));
float imgData[] = new float[1];
imgData[0] = (float)m;
trainClasses.put(m * train_samples + n, 0, imgData);//trainClasses存入数据,注意trainClasses是32位浮点数
Mat img = new Mat(new Size(mytemp.width(), mytemp.height()),CvType.CV_32FC1);
mytemp.convertTo(img, CvType.CV_32FC1, 0.0039215);
//prs_image.copyTo(img);
img = img.reshape(0, 1);
//Mat2IntArr(img);
float tempData[] = new float[img.cols()];
img.get(0, 0, tempData);
//Mat2IntArr(binaryMat);
trainData.put(m*train_samples + n, 0, tempData);
//grayBitmap = Bitmap.createBitmap(prs_image.width(), prs_image.height(), Config.RGB_565);
//grayBitmap.setPixels(result, 0, w, 0, 0, w, h);
//Utils.matToBitmap(prs_image, grayBitmap); //convert mat to bitmap
}
}
//Mat2IntArr(trainData);
}
float do_ocr(Mat mat)
{
Mat pimage = new Mat();
Mat data = new Mat();
Imgproc.resize(mat, pimage, new Size(new_width, new_height));
Mat image = new Mat(new Size(pimage.width(), pimage.height()),CvType.CV_32FC1);
pimage.convertTo(image, CvType.CV_32FC1, 0.0039215);
//Mat2IntArr(image);
data = image.reshape(0, 1);
Mat nearest = new Mat(new Size(K, 1), CvType.CV_32FC1);
Mat results = new Mat();
Mat dists = new Mat();
//Mat2IntArr(data);
float res = knn.find_nearest(data, K, results, nearest, dists);
return res;
}
void sortBankNum()//对银行卡进行排序
{
int i,j,temp;
for(j=0;j<=17;j++)
{
for (i=0;i<17-j;i++)
if (bankX[i]>bankX[i+1])
{
temp=bankX[i];
bankX[i]=bankX[i+1];
bankX[i+1]=temp;
temp=bankNum[i];
bankNum[i]=bankNum[i+1];
bankNum[i+1]=temp;
}
}
/*bankNum[0] = 6;
bankNum[1] = 2;
bankNum[2] = 2;
bankNum[3] = 8;
bankNum[4] = 4;
bankNum[5] = 8;*/
}
Mat Filter(Mat imgSrc, Mat src, int t2)
{//过滤图像
int a = 0, b = 0;//保存有效行号
int h = 0;
int state = 0;//标志位，0则表示还未到有效行，1则表示到了有效行,2表示搜寻完毕
for (int y = 0; y < imgSrc.height(); y++)
{
int count = 0;
for (int x = 0; x < imgSrc.width(); x++)
{
//System.out.println("ok");
byte[] data = new byte[1];
imgSrc.get(y, x, data);
//System.out.println("ok2");
if (data[0] == 0)
count = count + 1;
}
if (state == 0)//还未到有效行
{
if (count >= 10)//找到了有效行
{//有效行允许十个像素点的噪声
a = y;
state = 1;
}
}
else if (state == 1)
{
if (count <= 10)//找到了有效行
{//有效行允许十个像素点的噪声
b = y;
state = 2;
}
}
}
numX1 = a;
numX2 = b;
System.out.println(Integer.toString(a));
System.out.println(Integer.toString(b));
if (b - a > 10)
{
Rect roi = new Rect(0, a, src.width(), b - a);
//Mat res = cvCreateImage(cvSize(roi.width, roi.height), 8, 1);
Mat res = new Mat(new Size(roi.width, roi.height),CvType.CV_8UC1);
//IplImage *orig = cvCreateImage(cvSize(roi.width, roi.height), 8, 1);
Mat orig = new Mat(new Size(roi.width, roi.height),CvType.CV_8UC1);
//cvSetImageROI(src, roi);
byte[] data = new byte[roi.width * roi.height];
src.get(a, 0, data);
orig.put(0, 0, data);
Imgproc.threshold(orig, res, t2, 255, Imgproc.THRESH_BINARY);//二值化 55
/*Size size = new Size(3, 3);
Mat element = Imgproc.getStructuringElement(Imgproc.MORPH_RECT, size);
Imgproc.erode(res, res, element);//腐蚀图像
*/
int newW = (int)(res.width()/3);
int newW2 = (int)(2 * res.width()/3);
Mat temp = new Mat(new Size(newW2, res.height()),CvType.CV_8UC1);
byte[] Tempdata = new byte[newW2];
for (int i = 0; i < res.height(); ++i)
{
res.get(i, newW, Tempdata);
temp.put(i, 0, Tempdata);
}
System.out.println("矩阵赋值成功了！");
System.out.println(String.valueOf(temp.cols())+"AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA" +String.valueOf(temp.rows()));
tempBitmap = Bitmap.createBitmap(temp.cols(), temp.rows(), Config.RGB_565);
Utils.matToBitmap(temp, tempBitmap);
//this.imgHuaishi.setImageBitmap(tempBitmap);
//return res;
return temp;
}
else
return null;
}
void coutIntArr(int[] temp, int[] temp2)
{
for (int i = 0; i < temp.length; ++i)
{
System.out.println(String.valueOf(temp[i])+ "+" + String.valueOf(temp2[i]));
}
}
public Mat cutMat(Mat imgSrc)
{
int a = 0, b = 0;//保存有效行号
int h = 0;
int state = 0;//标志位，0则表示还未到有效行，1则表示到了有效行,2表示搜寻完毕
for (int y = 0; y < imgSrc.height(); y++)
{
int count = 0;
for (int x = 0; x < imgSrc.width(); x++)
{
//System.out.println("ok");
byte[] data = new byte[1];
imgSrc.get(y, x, data);
//System.out.println("ok2");
if (data[0] == 0)
count = count + 1;
}
if (state == 0)//还未到有效行
{
if (count >= 10)//找到了有效行
{//有效行允许十个像素点的噪声
a = y;
state = 1;
}
}
else if (state == 1)
{
if (count <= 3)//找到了有效行
{//有效行允许十个像素点的噪声
b = y;
state = 2;
break;
}
}
}
Log.i("MyLogcat", "开始截取图片"+String.valueOf(imgSrc.width())+"+"+ String.valueOf(b - a));
Rect roi = new Rect(0, a, imgSrc.width(), b - a);
Mat res = new Mat(new Size(roi.width, roi.height),CvType.CV_8UC1);
res = imgSrc.submat(roi);
Log.i("MyLogcat", "截取成功");
if (hehe == 5)
{
//tempBitmap = Bitmap.createBitmap(res.cols(), res.rows(), Config.RGB_565);
//Utils.matToBitmap(res, tempBitmap);
//this.imgHuaishi.setImageBitmap(tempBitmap);
}
return res;
}
public int procSrc2Gray(int t, int t2){
Mat rgbMat = new Mat(); //原图
Mat grayMat = new Mat(); //灰度图
Mat binaryMat = new Mat(); //二值化图
Mat erode = new Mat();
Mat last = new Mat();
//srcBitmap = BitmapFactory.decodeResource(getResources(), R.drawable.a2);
//srcBitmap = getRes("a00");
//grayBitmap = Bitmap.createBitmap(srcBitmap.getWidth(), srcBitmap.getHeight(), Config.RGB_565);
Utils.bitmapToMat(srcBitmap, rgbMat); //convert original bitmap to Mat, R G B.
Bitmap bitP = srcBitmap;
Imgproc.resize(rgbMat, rgbMat, new Size(589, 374));
Imgproc.cvtColor(rgbMat, grayMat, Imgproc.COLOR_RGB2GRAY); //rgbMat to gray grayMat
//Mat2IntArr(grayMat);
//继续预处理
Imgproc.threshold(grayMat, binaryMat, t, 255, Imgproc.THRESH_BINARY);//二值化
//Mat2IntArr(binaryMat);
Imgproc.medianBlur(binaryMat, binaryMat, 3);
Size size = new Size(3, 3);
Mat element = Imgproc.getStructuringElement(Imgproc.MORPH_RECT, size);
Imgproc.erode(binaryMat, erode, element);//腐蚀图像
//System.out.println(Integer.toString(erode.channels()));
Log.i("MyLogcat", "进入Filter" );
last = Filter(erode,grayMat, t2);
Log.i("MyLogcat", "完成Filter" );
//Mat2IntArr(res);
boolean a1;
if (last != null)
{
Log.i("MyLogcat", "进入findRect" );
a1 = findRect(last);
}
else
{
a1 = false;
}
if(a1)
{
Log.i("MyLogcat", "完成findRect1111" );
//System.out.println(String.valueOf(aa.length)+" "+String.valueOf(bb.length));
/*for (int a = 0; a < 19; a++)
{
System.out.println(String.valueOf(aa[a])+" "+String.valueOf(bb[a]));
}*/
//Imgproc.medianBlur(last, last, 3);
//************将mat转换成int[]，送给c++进行处理*************
/*int h = last.height();
int w = last.width();
int temp[] = new int[h*w];
int result[] = new int[h*w];
temp = Mat2IntArr(last);
result = LibImgFun.ImgFun(temp, w, h);
System.out.println(String.valueOf(result[0]));
*/
/*String path = "bank";
Bitmap bmp = getRes(path);
if (bmp == null)
{
System.out.println("NULL Image");
}
System.out.println(String.valueOf(bmp.getHeight()) + " " + String.valueOf(srcBitmap.getHeight()));
imgHuaishi.setImageBitmap(bmp);*/
trainData = new Mat(new Size(new_width * new_height, classes * train_samples),CvType.CV_32FC1);
trainClasses = new Mat(new Size(1, classes * train_samples),CvType.CV_32FC1);
getData();//得到训练数据
knn = new CvKNearest();
Mat sampleIdx = new Mat();
//boolean a = knn.train(trainData, trainClasses, sampleIdx, false, K, false);
boolean a = knn.train(trainData, trainClasses);
//float ret = do_ocr(binaryMat);
//System.out.println(String.valueOf(ret));
//分割得到数字
Mat orig = new Mat();
last.copyTo(orig);
Mat bininv_img = new Mat();
int c = 0;
hehe = 0;
error = 0;
for (int i = 0; i < 18; i++)
{
c++;
hehe++;
if (bb[i] - aa[i] < 5)
{
Log.i("MyLogcat", "忽略" );
bankX[i] = 0;
bankNum[i] = 0;
error++;
continue;
}
Rect roi = new Rect(aa[i], 0, bb[i] - aa[i], numX2 - numX1);
bankX[i] = aa[i];//保存位置信息
Mat res = new Mat();
res = orig.submat(roi);
if(c == 7)
{
//grayBitmap = Bitmap.createBitmap(res.width(), res.height(), Config.RGB_565);
//Utils.matToBitmap(res, grayBitmap); //convert mat to bitmap
//Mat2IntArr(res);
}
float ret = do_ocr(res);
bankNum[i] = (int)ret;
}
Log.i("MyLogcat", "本次识别失败数是："+String.valueOf(error));
Log.i("MyLogcat", "进入sortBankNum" );
coutIntArr(bankNum, bankX);
sortBankNum();
coutIntArr(bankNum, bankX);
Log.i("MyLogcat", "完成sortBankNum" );
String x = new String();
x = "622848";
int finish = 0;
for (int i = 0; i < 18; ++i)
{
if(i + error > 17)
{
break;
}
if(bankX[i + error] != 0)
{
x = x + String.valueOf(bankNum[i + error]);
Log.i("MyLogcat", String.valueOf(bankNum[i + error]) + "+" + String.valueOf(i + error) );
finish++;
if(finish >= 13)
{
break;
}
}
}
this.imgHuaishi.setImageBitmap(bitP);
Log.i("MyLogcat", "准备放置结果了！" );
Toast.makeText(MainActivity.this, "卡号已经复制到剪切板！！！", 3).show();
TextView text = (TextView)findViewById(R.id.mttext);
//x = "6228481099312404479";
text.setText(x);
ClipboardManager myClipboard;
myClipboard = (ClipboardManager)getSystemService(CLIPBOARD_SERVICE);
ClipData myClip;
myClip = ClipData.newPlainText("text", x);
myClipboard.setPrimaryClip(myClip);
/* grayBitmap = Bitmap.createBitmap(last.width(), last.height(), Config.RGB_565);
//grayBitmap.setPixels(result, 0, w, 0, 0, w, h);
Utils.matToBitmap(last, grayBitmap); //convert mat to bitmap*/
Log.i("MyLogcat", "procSrc2Gray sucess..." );
return error;
}
else
{
TextView text = (TextView)findViewById(R.id.mttext);
text.setText("*******************");
tempBitmap = getRes("shuai");
this.imgHuaishi.setImageBitmap(tempBitmap);
Log.i("MyLogcat", "完成findRect2222" );
System.out.println("?????????????????????????????????");
Toast.makeText(MainActivity.this, "本次识别失败，请在光线较亮的地方再次尝试！！", 3).show();
srcBitmap.recycle(); //回收图片所占的内存
return 1;
}
}
boolean findRect(Mat srcA)
{//将银行数字分割，黑点为前景点，白点为背景点。
int count = 0;
int judgeA = 0;//0代表当前要判断有效列，1代表当前要判断无效列
int i = 0;
Mat src = new Mat();
if (srcA == null)
{
return false;
}
Imgproc.medianBlur(srcA, src, 3);
//srcA.copyTo(src);
//cvSmooth(srcA, src, CV_MEDIAN);
for (int x = 0; x < src.width(); x++)
{
count = 0;
for (int y = 0; y < src.height(); y++)
{
byte[] data = new byte[1];
src.get(y, x, data);
if (data[0] == 0)//遇到前景点就加1
{
count ++;
}
}
if (judgeA == 0)
{
if (count >= 5)//有效行到了
{
judgeA = 1;
if (i > 17)
{
i = 17;
}
aa[i] = x;
}
}
else if(judgeA == 1)
{
if (count < 5)
{
judgeA = 0;
if (i > 17)
{
i = 17;
}
bb[i] = x;
i++;
}
}
}
//coutIntArr(bb, aa);
/*
for (int ii = 0; ii < 19; ++ii)
{
if (bb[ii] - aa[ii] < 5)
{
return false;
}
}*/
return true;
/*for (int m = 0; m < i; m++)
{
cvLine(src, cvPoint(aa[m], 0), cvPoint(aa[m], src->height), cvScalar(0, 0, 0));
cvLine(src, cvPoint(bb[m], 0), cvPoint(bb[m], src->height), cvScalar(0, 0, 0));
}*/
/*cvNamedWindow("img");
cvShowImage("img", src);
cvWaitKey(0);
*/
}
public float[] Mat2IntArr(Mat mat)
{
int h = mat.height();
int w = mat.width();
float result[] = new float[h*w];
for (int i = 0; i < h; ++i)
{
for (int j = 0; j < w; ++j)
{
float[] data = new float[1];
mat.get(i, j, data);
if( data[0] == 0)
result[w * i + j] = 0;
else
result[w * i + j] = 255;
System.out.println("("+String.valueOf(i)+","+String.valueOf(j)+")"+String.valueOf((float)data[0]));
}
}
System.out.println(String.valueOf(h)+","+String.valueOf(w));
return result;
}
public Mat changeMat(Mat mat)
{
int h = mat.height();
int w = mat.width();
//int result[] = new int[h*w];
for (int i = 0; i < h; ++i)
{
for (int j = 0; j < w; ++j)
{
byte[] data = new byte[1];
mat.get(i, j, data);
if( data[0] != 0)
{
data[0] = (byte)255;
mat.put(i, j, data);
}
}
}
return mat;
}
public void pretreatment()
{//读入原始图片
/*Mat src = Highgui.imread("bank.jpg");
if (src == null)
{
Log.i(TAG, "LOAD FAILED ..." );
return;
}*/
Bitmap bm1=BitmapFactory.decodeFile("/drawable-hdpi/bank.jpg");
if (bm1 == null)
{
//Toast.makeText(MainActivity.this, "===========图片读取失败！============！！", 3).show();
return;
}
imgHuaishi.setImageBitmap(bm1);
}
private class ProcessClickListener implements OnClickListener{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
/* if (isFirst)
{
procSrc2Gray();
isFirst = false ;
}
if (flag){
imgHuaishi.setImageBitmap(grayBitmap);
btnProcess.setText( "查看原图" );
flag = false ;
}
else {
imgHuaishi.setImageBitmap(srcBitmap);
btnProcess.setText( "灰度化" );
flag = true ;
} */
/* Intent i = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(i, RESULT_LOAD_IMAGE);*/
camera();
}
}
private class ProcessPicClickListener implements OnClickListener{
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
Intent intent = new Intent(
Intent.ACTION_PICK,
android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);
startActivityForResult(intent, RESULT_LOAD_IMAGE);
}
}
/* @Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
super.onActivityResult(requestCode, resultCode, data);
System.out.println("图片选择成功");
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
System.out.println("是不是这里的问题？");
imgHuaishi.setImageBitmap(BitmapFactory.decodeFile(picturePath));
srcBitmap = BitmapFactory.decodeFile(picturePath);
System.out.println("进入主函数");
System.out.println(String.valueOf(srcBitmap.getWidth()) + " and " + String.valueOf(srcBitmap.getHeight()));
procSrc2Gray();
new Thread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
MainActivity.this.runOnUiThread(new Runnable() {
@Override
public void run() {
// TODO Auto-generated method stub
//procSrc2Gray();
System.out.println("线程进来了");
}
});
}
}).start();
}
}*/
/*
* 从相机获取
*/
private static final int PHOTO_REQUEST_CAREMA = 1;
private static final int PHOTO_REQUEST_GALLERY = 2;
private static final int PHOTO_REQUEST_CUT = 3;
private static final String PHOTO_FILE_NAME = "temp_photo.jpg";
private File tempFile;
/**
* 判断手机是否有SD卡。
*
* @return 有SD卡返回true，没有返回false。
*/
public static boolean hasSDCard() {
return Environment.MEDIA_MOUNTED.equals(Environment
.getExternalStorageState());
}
public void camera() {
// 激活相机
Intent intent = new Intent("android.media.action.IMAGE_CAPTURE");
// 判断存储卡是否可以用，可用进行存储
if (hasSDCard()) {
tempFile = new File(Environment.getExternalStorageDirectory(),
PHOTO_FILE_NAME);
// 从文件中创建uri
Uri uri = Uri.fromFile(tempFile);
intent.putExtra(MediaStore.EXTRA_OUTPUT, uri);
}
// 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_CAREMA
startActivityForResult(intent, PHOTO_REQUEST_CAREMA);
}
@Override
protected void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == RESULT_LOAD_IMAGE && resultCode == RESULT_OK && null != data) {
Uri selectedImage = data.getData();
String[] filePathColumn = { MediaStore.Images.Media.DATA };
Cursor cursor = getContentResolver().query(selectedImage,
filePathColumn, null, null, null);
cursor.moveToFirst();
int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
String picturePath = cursor.getString(columnIndex);
cursor.close();
System.out.println("是不是这里的问题？");
imgHuaishi.setImageBitmap(BitmapFactory.decodeFile(picturePath));
srcBitmap = BitmapFactory.decodeFile(picturePath);
System.out.println("进入主函数");
System.out.println(String.valueOf(srcBitmap.getWidth()) + " and " + String.valueOf(srcBitmap.getHeight()));
procSrc2Gray(28, 30);
}
else if (requestCode == PHOTO_REQUEST_GALLERY) {
// 从相册返回的数据
if (data != null) {
// 得到图片的全路径
Uri uri = data.getData();
crop(uri);
}
} else if (requestCode == PHOTO_REQUEST_CAREMA) {
// 从相机返回的数据
if (hasSDCard()) {
crop(Uri.fromFile(tempFile));
} else {
Toast.makeText(MainActivity.this, "未找到存储卡，无法存储照片！", 0).show();
}
} else if (requestCode == PHOTO_REQUEST_CUT) {
// 从剪切图片返回的数据
if (data != null) {
Bitmap bitmap = data.getParcelableExtra("data");
//this.imgHuaishi.setImageBitmap(bitmap);
srcBitmap = bitmap;
Log.i("MyLogcat", "procSrc2Gray 进来了！" );
//int i = 40;
//int judge = 1;
//while(judge > 0)
//{//错误大于0则继续
procSrc2Gray(45, 55);//43
//i++;
//if (i >= 45)
//{
//System.out.println("?????????????????????????????????");
//Toast.makeText(MainActivity.this, "本次识别失败，请在光线较亮的地方再次尝试！！", 3).show();
//break;
//}
//}
}
try {
// 将临时文件删除
tempFile.delete();
} catch (Exception e) {
e.printStackTrace();
}
}
super.onActivityResult(requestCode, resultCode, data);
}
/*
* 剪切图片
*/
private void crop(Uri uri) {
// 裁剪图片意图
Intent intent = new Intent("com.android.camera.action.CROP");
intent.setDataAndType(uri, "image/*");
intent.putExtra("crop", "true");
// 裁剪框的比例，1：1
intent.putExtra("aspectX", 8);
intent.putExtra("aspectY", 1);
// 裁剪后输出图片的尺寸大小
intent.putExtra("outputX", 800);
intent.putExtra("outputY", 100);
intent.putExtra("outputFormat", "JPEG");// 图片格式
intent.putExtra("noFaceDetection", true);// 取消人脸识别
intent.putExtra("return-data", true);
// 开启一个带有返回值的Activity，请求码为PHOTO_REQUEST_CUT
startActivityForResult(intent, PHOTO_REQUEST_CUT);
}
@Override
protected void onResume() {
// TODO Auto-generated method stub
super .onResume();
//load OpenCV engine and init OpenCV library
OpenCVLoader.initAsync(OpenCVLoader.OPENCV_VERSION_2_4_4, getApplicationContext(), mLoaderCallback);
Log.i(TAG, "onResume sucess load OpenCV..." );
// new Handler().postDelayed(new Runnable(){
//
// @Override
// public void run() {
// // TODO Auto-generated method stub
// procSrc2Gray();
// }
//
// }, 1000);
}
}
简易APP编写完毕