Java 基于OpenCV的不稳定人脸识别
我正在开发一个用于人脸识别的android应用程序,它是OpenCV的非官方包装。导入Java 基于OpenCV的不稳定人脸识别,java,android,opencv,javacv,face-recognition,Java,Android,Opencv,Javacv,Face Recognition,我正在开发一个用于人脸识别的android应用程序,它是OpenCV的非官方包装。导入com.googlecode.javacv.cpp.opencv\u contrib.FaceRecognizer后, 我应用并测试以下已知方法: 使用createLBPHFaceRecognizer()方法创建LBPH 使用createFisherFaceRecognizer()方法的FisherFace 使用CreateEigenFaceRecognitor()方法的特征脸 在识别检测到的人脸之前,我先
com.googlecode.javacv.cpp.opencv\u contrib.FaceRecognizer
后,
我应用并测试以下已知方法:
- 使用createLBPHFaceRecognizer()方法创建LBPH
- 使用createFisherFaceRecognizer()方法的FisherFace
- 使用CreateEigenFaceRecognitor()方法的特征脸
public String predict(Mat m) {
int n[] = new int[1];
double p[] = new double[1];
IplImage ipl = MatToIplImage(m,WIDTH, HEIGHT);
faceRecognizer.predict(ipl, n, p);
if (n[0]!=-1)
mProb=(int)p[0];
else
mProb=-1;
if (n[0] != -1)
return labelsFile.get(n[0]);
else
return "Unkown";
}
我无法控制概率p的阈值,因为:
- 小p<50可以预测正确的结果
- 高p>70可预测错误结果
- 中间p可以预测正确或错误
package org.opencv.javacv.facerecognition;
import static com.googlecode.javacv.cpp.opencv_highgui.*;
import static com.googlecode.javacv.cpp.opencv_core.*;
import static com.googlecode.javacv.cpp.opencv_imgproc.*;
import static com.googlecode.javacv.cpp.opencv_contrib.*;
import java.io.File;
import java.io.FileOutputStream;
import java.io.FilenameFilter;
import java.util.ArrayList;
import org.opencv.android.Utils;
import org.opencv.core.Mat;
import com.googlecode.javacv.cpp.opencv_imgproc;
import com.googlecode.javacv.cpp.opencv_contrib.FaceRecognizer;
import com.googlecode.javacv.cpp.opencv_core.IplImage;
import com.googlecode.javacv.cpp.opencv_core.MatVector;
import android.graphics.Bitmap;
import android.os.Environment;
import android.util.Log;
import android.widget.Toast;
public class PersonRecognizer {
public final static int MAXIMG = 100;
FaceRecognizer faceRecognizer;
String mPath;
int count=0;
labels labelsFile;
static final int WIDTH= 128;
static final int HEIGHT= 128;;
private int mProb=999;
PersonRecognizer(String path)
{
faceRecognizer = com.googlecode.javacv.cpp.opencv_contrib.createLBPHFaceRecognizer(2,8,8,8,200);
// path=Environment.getExternalStorageDirectory()+"/facerecog/faces/";
mPath=path;
labelsFile= new labels(mPath);
}
void changeRecognizer(int nRec)
{
switch(nRec) {
case 0: faceRecognizer = com.googlecode.javacv.cpp.opencv_contrib.createLBPHFaceRecognizer(1,8,8,8,100);
break;
case 1: faceRecognizer = com.googlecode.javacv.cpp.opencv_contrib.createFisherFaceRecognizer();
break;
case 2: faceRecognizer = com.googlecode.javacv.cpp.opencv_contrib.createEigenFaceRecognizer();
break;
}
train();
}
void add(Mat m, String description) {
Bitmap bmp= Bitmap.createBitmap(m.width(), m.height(), Bitmap.Config.ARGB_8888);
Utils.matToBitmap(m,bmp);
bmp= Bitmap.createScaledBitmap(bmp, WIDTH, HEIGHT, false);
FileOutputStream f;
try {
f = new FileOutputStream(mPath+description+"-"+count+".jpg",true);
count++;
bmp.compress(Bitmap.CompressFormat.JPEG, 100, f);
f.close();
} catch (Exception e) {
Log.e("error",e.getCause()+" "+e.getMessage());
e.printStackTrace();
}
}
public boolean train() {
File root = new File(mPath);
Log.i("mPath",mPath);
FilenameFilter pngFilter = new FilenameFilter() {
public boolean accept(File dir, String name) {
return name.toLowerCase().endsWith(".jpg");
};
};
File[] imageFiles = root.listFiles(pngFilter);
MatVector images = new MatVector(imageFiles.length);
int[] labels = new int[imageFiles.length];
int counter = 0;
int label;
IplImage img=null;
IplImage grayImg;
int i1=mPath.length();
for (File image : imageFiles) {
String p = image.getAbsolutePath();
img = cvLoadImage(p);
if (img==null)
Log.e("Error","Error cVLoadImage");
Log.i("image",p);
int i2=p.lastIndexOf("-");
int i3=p.lastIndexOf(".");
int icount=Integer.parseInt(p.substring(i2+1,i3));
if (count<icount) count++;
String description=p.substring(i1,i2);
if (labelsFile.get(description)<0)
labelsFile.add(description, labelsFile.max()+1);
label = labelsFile.get(description);
grayImg = IplImage.create(img.width(), img.height(), IPL_DEPTH_8U, 1);
cvCvtColor(img, grayImg, CV_BGR2GRAY);
images.put(counter, grayImg);
labels[counter] = label;
counter++;
}
if (counter>0)
if (labelsFile.max()>1)
faceRecognizer.train(images, labels);
labelsFile.Save();
return true;
}
public boolean canPredict()
{
if (labelsFile.max()>1)
return true;
else
return false;
}
public String predict(Mat m) {
if (!canPredict())
return "";
int n[] = new int[1];
double p[] = new double[1];
IplImage ipl = MatToIplImage(m,WIDTH, HEIGHT);
// IplImage ipl = MatToIplImage(m,-1, -1);
faceRecognizer.predict(ipl, n, p);
if (n[0]!=-1)
mProb=(int)p[0];
else
mProb=-1;
// if ((n[0] != -1)&&(p[0]<95))
if (n[0] != -1)
return labelsFile.get(n[0]);
else
return "Unkown";
}
IplImage MatToIplImage(Mat m,int width,int heigth)
{
Bitmap bmp=Bitmap.createBitmap(m.width(), m.height(), Bitmap.Config.ARGB_8888);
Utils.matToBitmap(m, bmp);
return BitmapToIplImage(bmp,width, heigth);
}
IplImage BitmapToIplImage(Bitmap bmp, int width, int height) {
if ((width != -1) || (height != -1)) {
Bitmap bmp2 = Bitmap.createScaledBitmap(bmp, width, height, false);
bmp = bmp2;
}
IplImage image = IplImage.create(bmp.getWidth(), bmp.getHeight(),
IPL_DEPTH_8U, 4);
bmp.copyPixelsToBuffer(image.getByteBuffer());
IplImage grayImg = IplImage.create(image.width(), image.height(),
IPL_DEPTH_8U, 1);
cvCvtColor(image, grayImg, opencv_imgproc.CV_BGR2GRAY);
return grayImg;
}
protected void SaveBmp(Bitmap bmp,String path)
{
FileOutputStream file;
try {
file = new FileOutputStream(path , true);
bmp.compress(Bitmap.CompressFormat.JPEG,100,file);
file.close();
}
catch (Exception e) {
// TODO Auto-generated catch block
Log.e("",e.getMessage()+e.getCause());
e.printStackTrace();
}
}
public void load() {
train();
}
public int getProb() {
// TODO Auto-generated method stub
return mProb;
}
}
package org.opencv.javacv.facerecognition;
导入静态com.googlecode.javacv.cpp.opencv_highgui.*;
导入静态com.googlecode.javacv.cpp.opencv_core.*;
导入静态com.googlecode.javacv.cpp.opencv_imgproc.*;
导入静态com.googlecode.javacv.cpp.opencv_contrib.*;
导入java.io.File;
导入java.io.FileOutputStream;
导入java.io.FilenameFilter;
导入java.util.ArrayList;
导入org.opencv.android.Utils;
导入org.opencv.core.Mat;
导入com.googlecode.javacv.cpp.opencv_imgproc;
导入com.googlecode.javacv.cpp.opencv_contrib.FaceRecognizer;
导入com.googlecode.javacv.cpp.opencv_core.IplImage;
导入com.googlecode.javacv.cpp.opencv_core.MatVector;
导入android.graphics.Bitmap;
导入android.os.Environment;
导入android.util.Log;
导入android.widget.Toast;
公共类人员识别器{
公共最终静态整数最大值=100;
人脸识别器;
字符串mPath;
整数计数=0;
标签标签文件;
静态最终整数宽度=128;
静态最终整数高度=128;;
私有int mProb=999;
个人识别器(字符串路径)
{
faceRecognizer=com.googlecode.javacv.cpp.opencv_contrib.createLBPHFaceRecognizer(2,8,8,8200);
//path=Environment.getExternalStorageDirectory()+“/facerecog/faces/”;
mPath=路径;
labelsFile=新标签(mPath);
}
无效变更识别器(int nRec)
{
开关(nRec){
案例0:faceRecognizer=com.googlecode.javacv.cpp.opencv_contrib.createLBPHFaceRecognizer(1,8,8,8100);
打破
案例1:faceRecognizer=com.googlecode.javacv.cpp.opencv_contrib.createFisherFaceRecognizer();
打破
案例2:faceRecognizer=com.googlecode.javacv.cpp.opencv_contrib.createEigenFaceRecognizer();
打破
}
火车();
}
无效添加(材料m,字符串描述){
位图bmp=Bitmap.createBitmap(m.width(),m.height(),Bitmap.Config.ARGB_8888);
matToBitmap(m,bmp);
bmp=Bitmap.createScaledBitmap(bmp,宽度,高度,false);
文件输出流f;
试一试{
f=新的FileOutputStream(mPath+description+“-”+count+“.jpg”,true);
计数++;
bmp.compress(Bitmap.CompressFormat.JPEG,100,f);
f、 close();
}捕获(例外e){
Log.e(“错误”,e.getCause()+“”+e.getMessage());
e、 printStackTrace();
}
}
公共布尔序列(){
文件根=新文件(mPath);
对数i(“兆帕”,兆帕);
FilenameFilter pngFilter=新FilenameFilter(){
公共布尔接受(文件目录,字符串名称){
返回name.toLowerCase().endsWith(“.jpg”);
};
};
File[]imageFiles=root.listFiles(pngFilter);
MatVector images=新的MatVector(imageFiles.length);
int[]labels=新的int[imageFiles.length];
int计数器=0;
int标签;
IplImage img=null;
IplImage-grayImg;
int i1=mPath.length();
用于(文件图像:imageFiles){
字符串p=image.getAbsolutePath();
img=cvLoadImage(p);
如果(img==null)
Log.e(“错误”,“错误cVLoadImage”);
Log.i(“图像”,p);
int i2=p.lastIndexOf(“-”);
int i3=p.lastIndexOf(“.”);
int icount=Integer.parseInt(p.substring(i2+1,i3));
if(count1)
人脸识别器。序列(图像、标签);
labelfile.Save();
返回true;
}
公共布尔值canPredict()
{
如果(labelfile.max()>1)
返回true;
其他的
返回false;
}
公共字符串预测(Mat m){
如果(!canPredict())
返回“”;
int n[]=新int[1];
双p[]=新的双p[1];
IplImage ipl=MatToIplImage(米、宽、高);
//IplImage ipl=MatToIplImage(m,-1,-1);
人脸识别器预测(ipl,n,p);
如果(n[0]!=-1)
mProb=(int)p[0];
其他的
mProb=-1;
//如果((n[0]!=-1)和&(p[0]我认为您需要实现一些对照明变化更鲁棒的功能。请参阅:
然后,为了管理图像之间的相似性,您可以使用