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| public class FaceUtil {
private static final String TAG = "FaceUtil";
private FaceUtil() {
}
/**
* 特征保存
*
* @param image Mat
* @param rect 人脸信息
* @return 保存是否成功
*/
public static boolean saveImage(Mat image, Rect rect) {
// 原图置灰
Mat grayMat = new Mat();
Imgproc.cvtColor(image, grayMat, Imgproc.COLOR_BGR2GRAY);
//Imgproc.cvtColor(image, grayMat, Imgproc.COLORMAP_JET);
// 把检测到的人脸重新定义大小后保存成文件
Mat sub = grayMat.submat(rect);
Mat mat = new Mat();
Size size = new Size(100, 100);
Imgproc.resize(sub, mat, size);
return Imgcodecs.imwrite(getRecFileName(), mat);
}
/**
* 删除特征
*
* @param context Context
* @param fileName 特征文件
* @return 是否删除成功
*/
public static boolean deleteImage(Context context, String fileName) {
// 文件名不能为空
if (TextUtils.isEmpty(fileName)) {
return false;
}
// 文件路径不能为空
String path = getRecFileNameList()[0];
if (path != null) {
File file = new File(path);
return file.exists() && file.delete();
} else {
return false;
}
}
/**
* 提取特征
*
* @param
* @param fileName 文件名
* @return 特征图片
*/
public static Bitmap getImage(String fileName) {
//String filePath = getRecFileNameList()[0];
if (TextUtils.isEmpty(fileName)) {
return null;
} else {
return BitmapFactory.decodeFile(fileName);
}
}
public static double recon(Context context) {
String[] dataPath = getDataFileNameList();
String recPath = getRecFileNameList()[0];
double diff = 0;
for (int i = 0; i < dataPath.length; i++) {
diff = compare(dataPath[i], recPath);
if (diff >= 90) {
break;
}
}
return diff;
}
/**
* 特征对比
*
* @param
* @param fileName1 人脸特征
* @param fileName2 人脸特征
* @return 相似度
*/
public static double compare(String fileName1, String fileName2) {
try {
IplImage image1 = cvLoadImage(fileName1, opencv_imgcodecs.IMREAD_GRAYSCALE);
IplImage image2 = cvLoadImage(fileName2, opencv_imgcodecs.IMREAD_GRAYSCALE);
if (null == image1 || null == image2) {
return -1;
}
int l_bins = 256;
int hist_size[] = {l_bins};
float v_ranges[] = {0, 255};
float ranges[][] = {v_ranges};
IplImage imageArr1[] = {image1};
IplImage imageArr2[] = {image2};
CvHistogram Histogram1 = CvHistogram.create(1, hist_size, CV_HIST_ARRAY, ranges, 1);
CvHistogram Histogram2 = CvHistogram.create(1, hist_size, CV_HIST_ARRAY, ranges, 1);
cvCalcHist(imageArr1, Histogram1, 0, null);
cvCalcHist(imageArr2, Histogram2, 0, null);
cvNormalizeHist(Histogram1, 100.0);
cvNormalizeHist(Histogram2, 100.0);
// 参考：http://blog.csdn.net/nicebooks/article/details/8175002
double c1 = cvCompareHist(Histogram1, Histogram2, CV_COMP_CORREL) * 100;
double c2 = cvCompareHist(Histogram1, Histogram2, CV_COMP_INTERSECT);
// Log.i(TAG, "compare: ----------------------------");
// Log.i(TAG, "compare: c1 = " + c1);
// Log.i(TAG, "compare: c2 = " + c2);
// Log.i(TAG, "compare: 平均值 = " + ((c1 + c2) / 2));
// Log.i(TAG, "compare: ----------------------------");
return (c1 + c2) / 2;
} catch (Exception e) {
e.printStackTrace();
return -1;
}
}
/**
* @return 路径
*/
public static File getDataSourcePath() {
File file = new File(Environment.getExternalStorageDirectory(), "/FaceDetect/sourcePic/");
if (!file.exists()) {
file.mkdirs();
}
return file;
//return new File(Environment.getExternalStorageDirectory(),"/FaceDetect/sourcePic/");
}
public static File getRecPath() {
File file = new File(Environment.getExternalStorageDirectory(), "FaceDetect");
if (!file.exists()) {
file.mkdirs();
}
return file;
// return new File(Environment.getExternalStorageDirectory(),"FaceDetect");
}
private static String getRecFileName() {
String name = new SimpleDateFormat("yyyy-MM-dd-HH:mm:ss").format(new Date()) + ".jpg";
return new File(getRecPath().getAbsolutePath(), name).getAbsolutePath();
//return getRecPath().getAbsolutePath() + new SimpleDateFormat("yyyy-MM-dd-HH:mm:ss").format(new Date()) + ".jpg";
}
/**
* @return
* @description：获取识别库下的所有文件
*/
public static String[] getDataFileNameList() {
File pathName = getDataSourcePath();
File[] files = pathName.listFiles();
String[] fileNames = null;
if (files != null) {
fileNames = fileFilterEnd(files, "jpg");
Arrays.sort(fileNames, Collections.reverseOrder());
}
return fileNames;
}
/**
* @return
* @description：获取最近识别出的文件
*/
public static String getRecFileAbsolutePath() {
String fileName = FaceUtilNew.getRecFileNameList()[0];
return new File(getRecPath().getAbsolutePath(), fileName).getAbsolutePath();
}
public static String[] getRecFileNameList() {
File pathName = getRecPath();
File[] files = pathName.listFiles();
String[] fileNames = null;
if (files != null) {
fileNames = fileFilterEnd(files, "jpg");
Arrays.sort(fileNames, Collections.reverseOrder());
}
return fileNames;
}
//删除所有临时文件
public static void deleteRecFiles(){
String [] recStringFiles=getRecFileNameList();
for (String str:recStringFiles) {
File file=new File(getRecPath().getAbsolutePath(),str);
file.delete();
}
}
private static String[] fileFilterEnd(File[] f, String end) {
int count = 0;
for (int i = 0; i < f.length; i++) {
if (f[i].getName().endsWith(end)) count++;
}
String[] s1 = new String[count];
count = 0;
for (int i = 0; i < f.length; i++) {
if (f[i].getName().endsWith(end)) {
s1[count] = f[i].getName();
count++;
}
}
return s1;
}
}
|
