1.人臉識別測驗，如下：
<iframe id="bjdePR3I-1628865505463" src="https://live.csdn.net/v/embed/175219" allowfullscreen="true" data-mediaembed="csdn"></iframe>
2.匯入新專案如下：
3.翻譯
template:模板
tracker:跟蹤器
lock:鎖定
purge:清除
frame:框架
我同事發給我這專案，叫我改目錄才能查看，他說這專案的人臉識別可以注冊人臉圖和特征，注冊了的放在手機存盤里，但是存盤里查不到，我試改了不行，我不知道這專案是怎么來的，檔案也不見，算了，我在百度找到了很不錯的人臉識別是虹軟的，可以改目錄，檔案也有，你想了解的話就直接點擊鏈接：Android的虹軟人臉識別和活體檢測(附含10000個人臉圖片和特征zip下載)
4.獲取id和key,是別人獲取的，如下圖：
這id和key各多少在網哪獲取的？我不知道
5.彈出輸入姓名框，是注冊人臉圖(帶有姓名)和特征，代碼如下：
builder.setMessage("Enter person's name")
.setView(input)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int j) {
FSDK.LockID(mTracker, mTouchedID);
String userName = input.getText().toString();
FSDK.SetName(mTracker, mTouchedID, userName);
if (userName.length() <= 0)
FSDK.PurgeID(mTracker, mTouchedID);
FSDK.UnlockID(mTracker, mTouchedID);
mTouchedIndex = -1;
}
})
這代碼，看來人臉圖和特征應該是放在手機存盤里，存盤里想查看但是查不到，無法改目錄才能查看
抱歉，這專案源代碼暫時不公開哈，id和key也不公開，先看一下代碼吧，代碼如下：
完整的MainActivity.java
public class MainActivity extends Activity implements OnClickListener {
private boolean mIsFailed = false;
private Preview mPreview;
private ProcessImageAndDrawResults mDraw;
private final String database = "Memory50.dat";
private final String help_text = "Luxand Face Recognition\n\nJust tap any detected face and name it. The app will recognize this face further. For best results, hold the device at arm's length. You may slowly rotate the head for the app to memorize you at multiple views. The app can memorize several persons. If a face is not recognized, tap and name it again.\n\nThe SDK is available for mobile developers: www.luxand.com/facesdk";
public static float sDensity = 1.0f;
public void showErrorAndClose(String error, int code) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(error + ": " + code)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
android.os.Process.killProcess(android.os.Process.myPid());
}
})
.show();
}
public void showMessage(String message) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage(message)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
}
})
.setCancelable(false) // cancel with button only
.show();
}
private void resetTrackerParameters() {
int errpos[] = new int[1];
FSDK.SetTrackerMultipleParameters(mDraw.mTracker, "ContinuousVideoFeed=true;FacialFeatureJitterSuppression=0;RecognitionPrecision=1;Threshold=0.996;Threshold2=0.9995;ThresholdFeed=0.97;MemoryLimit=2000;HandleArbitraryRotations=false;DetermineFaceRotationAngle=false;InternalResizeWidth=70;FaceDetectionThreshold=3;", errpos);
if (errpos[0] != 0) {
showErrorAndClose("Error setting tracker parameters, position", errpos[0]);
}
}
/**
* Called when the activity is first created.
*/
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
sDensity = getResources().getDisplayMetrics().scaledDensity;
int res = FSDK.ActivateLibrary("******");
if (res != FSDK.FSDKE_OK) {
mIsFailed = true;
showErrorAndClose("FaceSDK activation failed", res);
} else {
FSDK.Initialize();
// Hide the window title (it is done in manifest too)
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
requestWindowFeature(Window.FEATURE_NO_TITLE);
// Lock orientation
setRequestedOrientation(ActivityInfo.SCREEN_ORIENTATION_PORTRAIT);
// Camera layer and drawing layer
mDraw = new ProcessImageAndDrawResults(this);
mPreview = new Preview(this, mDraw);
mDraw.mTracker = new HTracker();
String templatePath = this.getApplicationInfo().dataDir + "/" + database;
if (FSDK.FSDKE_OK != FSDK.LoadTrackerMemoryFromFile(mDraw.mTracker, templatePath)) {
res = FSDK.CreateTracker(mDraw.mTracker);
if (FSDK.FSDKE_OK != res) {
showErrorAndClose("Error creating tracker", res);
}
}
resetTrackerParameters();
this.getWindow().setBackgroundDrawable(new ColorDrawable()); //black background
setContentView(mPreview); //creates MainActivity contents
addContentView(mDraw, new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT));
// Menu
LayoutInflater inflater = (LayoutInflater) this.getSystemService(Context.LAYOUT_INFLATER_SERVICE);
View buttons = inflater.inflate(R.layout.bottom_menu, null);
buttons.findViewById(R.id.helpButton).setOnClickListener(this);
buttons.findViewById(R.id.clearButton).setOnClickListener(this);
addContentView(buttons, new LayoutParams(LayoutParams.MATCH_PARENT, LayoutParams.MATCH_PARENT));
}
}
@Override
public void onClick(View view) {
if (view.getId() == R.id.helpButton) {
showMessage(help_text);
} else if (view.getId() == R.id.clearButton) {
AlertDialog.Builder builder = new AlertDialog.Builder(this);
builder.setMessage("Are you sure to clear the memory?")
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int j) {
pauseProcessingFrames();
FSDK.ClearTracker(mDraw.mTracker);
resetTrackerParameters();
resumeProcessingFrames();
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int j) {
}
})
.setCancelable(false) // cancel with button only
.show();
}
}
@Override
public void onPause() {
super.onPause();
pauseProcessingFrames();
String templatePath = this.getApplicationInfo().dataDir + "/" + database;
FSDK.SaveTrackerMemoryToFile(mDraw.mTracker, templatePath);
}
@Override
public void onResume() {
super.onResume();
if (mIsFailed)
return;
resumeProcessingFrames();
}
private void pauseProcessingFrames() {
mDraw.mStopping = 1;
// It is essential to limit wait time, because mStopped will not be set to 0, if no frames are feeded to mDraw
for (int i = 0; i < 100; ++i) {
if (mDraw.mStopped != 0) break;
try {
Thread.sleep(10);
} catch (Exception ex) {
}
}
}
private void resumeProcessingFrames() {
mDraw.mStopped = 0;
mDraw.mStopping = 0;
}
}
class FaceRectangle {
public int x1, y1, x2, y2;
}
// Draw graphics on top of the video
class ProcessImageAndDrawResults extends View {
public HTracker mTracker;
final int MAX_FACES = 5;
final FaceRectangle[] mFacePositions = new FaceRectangle[MAX_FACES];
final long[] mIDs = new long[MAX_FACES];
final Lock faceLock = new ReentrantLock();
int mTouchedIndex;
long mTouchedID;
int mStopping;
int mStopped;
Context mContext;
Paint mPaintGreen, mPaintBlue, mPaintBlueTransparent;
byte[] mYUVData;
byte[] mRGBData;
int mImageWidth, mImageHeight;
boolean first_frame_saved;
boolean rotated;
int GetFaceFrame(FSDK.FSDK_Features Features, FaceRectangle fr) {
if (Features == null || fr == null)
return FSDK.FSDKE_INVALID_ARGUMENT;
float u1 = Features.features[0].x;
float v1 = Features.features[0].y;
float u2 = Features.features[1].x;
float v2 = Features.features[1].y;
float xc = (u1 + u2) / 2;
float yc = (v1 + v2) / 2;
int w = (int) Math.pow((u2 - u1) * (u2 - u1) + (v2 - v1) * (v2 - v1), 0.5);
fr.x1 = (int) (xc - w * 1.6 * 0.9);
fr.y1 = (int) (yc - w * 1.1 * 0.9);
fr.x2 = (int) (xc + w * 1.6 * 0.9);
fr.y2 = (int) (yc + w * 2.1 * 0.9);
if (fr.x2 - fr.x1 > fr.y2 - fr.y1) {
fr.x2 = fr.x1 + fr.y2 - fr.y1;
} else {
fr.y2 = fr.y1 + fr.x2 - fr.x1;
}
return 0;
}
public ProcessImageAndDrawResults(Context context) {
super(context);
mTouchedIndex = -1;
mStopping = 0;
mStopped = 0;
rotated = false;
mContext = context;
mPaintGreen = new Paint();
mPaintGreen.setStyle(Paint.Style.FILL);
mPaintGreen.setColor(Color.GREEN);
mPaintGreen.setTextSize(18 * MainActivity.sDensity);
mPaintGreen.setTextAlign(Align.CENTER);
mPaintBlue = new Paint();
mPaintBlue.setStyle(Paint.Style.FILL);
mPaintBlue.setColor(Color.BLUE);
mPaintBlue.setTextSize(18 * MainActivity.sDensity);
mPaintBlue.setTextAlign(Align.CENTER);
mPaintBlueTransparent = new Paint();
mPaintBlueTransparent.setStyle(Paint.Style.STROKE);
mPaintBlueTransparent.setStrokeWidth(2);
mPaintBlueTransparent.setColor(Color.BLUE);
mPaintBlueTransparent.setTextSize(25);
//mBitmap = null;
mYUVData = null;
mRGBData = null;
first_frame_saved = false;
}
@Override
protected void onDraw(Canvas canvas) {
if (mStopping == 1) {
mStopped = 1;
super.onDraw(canvas);
return;
}
if (mYUVData == null || mTouchedIndex != -1) {
super.onDraw(canvas);
return; //nothing to process or name is being entered now
}
int canvasWidth = canvas.getWidth();
//int canvasHeight = canvas.getHeight();
// Convert from YUV to RGB
decodeYUV420SP(mRGBData, mYUVData, mImageWidth, mImageHeight);
// Load image to FaceSDK
FSDK.HImage Image = new FSDK.HImage();
FSDK.FSDK_IMAGEMODE imagemode = new FSDK.FSDK_IMAGEMODE();
imagemode.mode = FSDK.FSDK_IMAGEMODE.FSDK_IMAGE_COLOR_24BIT;
FSDK.LoadImageFromBuffer(Image, mRGBData, mImageWidth, mImageHeight, mImageWidth * 3, imagemode);
FSDK.MirrorImage(Image, false);
FSDK.HImage RotatedImage = new FSDK.HImage();
FSDK.CreateEmptyImage(RotatedImage);
//it is necessary to work with local variables (onDraw called not the time when mImageWidth,... being reassigned, so swapping mImageWidth and mImageHeight may be not safe)
int ImageWidth = mImageWidth;
//int ImageHeight = mImageHeight;
if (rotated) {
ImageWidth = mImageHeight;
//ImageHeight = mImageWidth;
FSDK.RotateImage90(Image, -1, RotatedImage);
} else {
FSDK.CopyImage(Image, RotatedImage);
}
FSDK.FreeImage(Image);
// Save first frame to gallery to debug (e.g. rotation angle)
/*
if (!first_frame_saved) {
first_frame_saved = true;
String galleryPath = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES).getAbsolutePath();
FSDK.SaveImageToFile(RotatedImage, galleryPath + "/first_frame.jpg"); //frame is rotated!
}
*/
long IDs[] = new long[MAX_FACES];
long face_count[] = new long[1];
FSDK.FeedFrame(mTracker, 0, RotatedImage, face_count, IDs);
FSDK.FreeImage(RotatedImage);
faceLock.lock();
for (int i = 0; i < MAX_FACES; ++i) {
mFacePositions[i] = new FaceRectangle();
mFacePositions[i].x1 = 0;
mFacePositions[i].y1 = 0;
mFacePositions[i].x2 = 0;
mFacePositions[i].y2 = 0;
mIDs[i] = IDs[i];
}
float ratio = (canvasWidth * 1.0f) / ImageWidth;
for (int i = 0; i < (int) face_count[0]; ++i) {
FSDK.FSDK_Features Eyes = new FSDK.FSDK_Features();
FSDK.GetTrackerEyes(mTracker, 0, mIDs[i], Eyes);
GetFaceFrame(Eyes, mFacePositions[i]);
mFacePositions[i].x1 *= ratio;
mFacePositions[i].y1 *= ratio;
mFacePositions[i].x2 *= ratio;
mFacePositions[i].y2 *= ratio;
}
faceLock.unlock();
int shift = (int) (22 * MainActivity.sDensity);
// Mark and name faces
for (int i = 0; i < face_count[0]; ++i) {
canvas.drawRect(mFacePositions[i].x1, mFacePositions[i].y1, mFacePositions[i].x2, mFacePositions[i].y2, mPaintBlueTransparent);
boolean named = false;
if (IDs[i] != -1) {
String names[] = new String[1];
FSDK.GetAllNames(mTracker, IDs[i], names, 1024);
if (names[0] != null && names[0].length() > 0) {
canvas.drawText(names[0], (mFacePositions[i].x1 + mFacePositions[i].x2) / 2, mFacePositions[i].y2 + shift, mPaintBlue);
named = true;
}
}
if (!named) {
canvas.drawText("Tap to name", (mFacePositions[i].x1 + mFacePositions[i].x2) / 2, mFacePositions[i].y2 + shift, mPaintGreen);
}
}
super.onDraw(canvas);
} // end onDraw method
@Override
public boolean onTouchEvent(MotionEvent event) { //NOTE: the method can be implemented in Preview class
switch (event.getAction()) {
case MotionEvent.ACTION_DOWN:
int x = (int) event.getX();
int y = (int) event.getY();
faceLock.lock();
FaceRectangle rects[] = new FaceRectangle[MAX_FACES];
long IDs[] = new long[MAX_FACES];
for (int i = 0; i < MAX_FACES; ++i) {
rects[i] = new FaceRectangle();
rects[i].x1 = mFacePositions[i].x1;
rects[i].y1 = mFacePositions[i].y1;
rects[i].x2 = mFacePositions[i].x2;
rects[i].y2 = mFacePositions[i].y2;
IDs[i] = mIDs[i];
}
faceLock.unlock();
for (int i = 0; i < MAX_FACES; ++i) {
if (rects[i] != null && rects[i].x1 <= x && x <= rects[i].x2 && rects[i].y1 <= y && y <= rects[i].y2 + 30) {
mTouchedID = IDs[i];
mTouchedIndex = i;
// requesting name on tapping the face
final EditText input = new EditText(mContext);
AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
builder.setMessage("Enter person's name")
.setView(input)
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int j) {
FSDK.LockID(mTracker, mTouchedID);
String userName = input.getText().toString();
FSDK.SetName(mTracker, mTouchedID, userName);
if (userName.length() <= 0)
FSDK.PurgeID(mTracker, mTouchedID);
FSDK.UnlockID(mTracker, mTouchedID);
mTouchedIndex = -1;
}
})
.setNegativeButton("Cancel", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int j) {
mTouchedIndex = -1;
}
})
.setCancelable(false) // cancel with button only
.show();
break;
}
}
}
return true;
}
static public void decodeYUV420SP(byte[] rgb, byte[] yuv420sp, int width, int height) {
final int frameSize = width * height;
int yp = 0;
for (int j = 0; j < height; j++) {
int uvp = frameSize + (j >> 1) * width, u = 0, v = 0;
for (int i = 0; i < width; i++) {
int y = (0xff & ((int) yuv420sp[yp])) - 16;
if (y < 0) y = 0;
if ((i & 1) == 0) {
v = (0xff & yuv420sp[uvp++]) - 128;
u = (0xff & yuv420sp[uvp++]) - 128;
}
int y1192 = 1192 * y;
int r = (y1192 + 1634 * v);
int g = (y1192 - 833 * v - 400 * u);
int b = (y1192 + 2066 * u);
if (r < 0) r = 0;
else if (r > 262143) r = 262143;
if (g < 0) g = 0;
else if (g > 262143) g = 262143;
if (b < 0) b = 0;
else if (b > 262143) b = 262143;
rgb[3 * yp] = (byte) ((r >> 10) & 0xff);
rgb[3 * yp + 1] = (byte) ((g >> 10) & 0xff);
rgb[3 * yp + 2] = (byte) ((b >> 10) & 0xff);
++yp;
}
}
}
} // end of ProcessImageAndDrawResults class
// Show video from camera and pass frames to ProcessImageAndDraw class
class Preview extends SurfaceView implements SurfaceHolder.Callback {
Context mContext;
SurfaceHolder mHolder;
Camera mCamera;
ProcessImageAndDrawResults mDraw;
boolean mFinished;
Preview(Context context, ProcessImageAndDrawResults draw) {
super(context);
mContext = context;
mDraw = draw;
//Install a SurfaceHolder.Callback so we get notified when the underlying surface is created and destroyed.
mHolder = getHolder();
mHolder.addCallback(this);
mHolder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
}
//SurfaceView callback
public void surfaceCreated(SurfaceHolder holder) {
mFinished = false;
// Find the ID of the camera
int cameraId = 0;
boolean frontCameraFound = false;
Camera.CameraInfo cameraInfo = new Camera.CameraInfo();
for (int i = 0; i < Camera.getNumberOfCameras(); i++) {
Camera.getCameraInfo(i, cameraInfo);
//if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_BACK)
if (cameraInfo.facing == Camera.CameraInfo.CAMERA_FACING_FRONT) {
cameraId = i;
frontCameraFound = true;
}
}
if (frontCameraFound) {
mCamera = Camera.open(cameraId);
} else {
mCamera = Camera.open();
}
try {
mCamera.setPreviewDisplay(holder);
// Preview callback used whenever new viewfinder frame is available
mCamera.setPreviewCallback(new PreviewCallback() {
public void onPreviewFrame(byte[] data, Camera camera) {
if ((mDraw == null) || mFinished)
return;
if (mDraw.mYUVData == null) {
// Initialize the draw-on-top companion
Camera.Parameters params = camera.getParameters();
mDraw.mImageWidth = params.getPreviewSize().width;
mDraw.mImageHeight = params.getPreviewSize().height;
mDraw.mRGBData = new byte[3 * mDraw.mImageWidth * mDraw.mImageHeight];
mDraw.mYUVData = new byte[data.length];
}
// Pass YUV data to draw-on-top companion
System.arraycopy(data, 0, mDraw.mYUVData, 0, data.length);
mDraw.invalidate();
}
});
} catch (Exception exception) {
AlertDialog.Builder builder = new AlertDialog.Builder(mContext);
builder.setMessage("Cannot open camera")
.setPositiveButton("Ok", new DialogInterface.OnClickListener() {
@Override
public void onClick(DialogInterface dialogInterface, int i) {
android.os.Process.killProcess(android.os.Process.myPid());
}
})
.show();
if (mCamera != null) {
mCamera.release();
mCamera = null;
}
}
}
//SurfaceView callback
public void surfaceDestroyed(SurfaceHolder holder) {
// Surface will be destroyed when we return, so stop the preview.
// Because the CameraDevice object is not a shared resource, it's very
// important to release it when the activity is paused.
mFinished = true;
if (mCamera != null) {
mCamera.setPreviewCallback(null);
mCamera.stopPreview();
mCamera.release();
mCamera = null;
}
}
//SurfaceView callback, configuring camera
public void surfaceChanged(SurfaceHolder holder, int format, int w, int h) {
if (mCamera == null) return;
// Now that the size is known, set up the camera parameters and begin
// the preview.
Camera.Parameters parameters = mCamera.getParameters();
//Keep uncommented to work correctly on phones:
//This is an undocumented although widely known feature
/**/
if (this.getResources().getConfiguration().orientation != Configuration.ORIENTATION_LANDSCAPE) {
parameters.set("orientation", "portrait");
mCamera.setDisplayOrientation(90); // For Android 2.2 and above
mDraw.rotated = true;
} else {
parameters.set("orientation", "landscape");
mCamera.setDisplayOrientation(0); // For Android 2.2 and above
}
/**/
// choose preview size closer to 640x480 for optimal performance
List<Size> supportedSizes = parameters.getSupportedPreviewSizes();
int width = 0;
int height = 0;
for (Size s : supportedSizes) {
if ((width - 640) * (width - 640) + (height - 480) * (height - 480) >
(s.width - 640) * (s.width - 640) + (s.height - 480) * (s.height - 480)) {
width = s.width;
height = s.height;
}
}
//try to set preferred parameters
try {
if (width * height > 0) {
parameters.setPreviewSize(width, height);
}
//parameters.setPreviewFrameRate(10);
parameters.setSceneMode(Camera.Parameters.SCENE_MODE_PORTRAIT);
parameters.setFocusMode(Camera.Parameters.FOCUS_MODE_CONTINUOUS_VIDEO);
mCamera.setParameters(parameters);
} catch (Exception ex) {
}
mCamera.startPreview();
parameters = mCamera.getParameters();
Camera.Size previewSize = parameters.getPreviewSize();
makeResizeForCameraAspect(1.0f / ((1.0f * previewSize.width) / previewSize.height));
}
private void makeResizeForCameraAspect(float cameraAspectRatio) {
LayoutParams layoutParams = this.getLayoutParams();
int matchParentWidth = this.getWidth();
int newHeight = (int) (matchParentWidth / cameraAspectRatio);
if (newHeight != layoutParams.height) {
layoutParams.height = newHeight;
layoutParams.width = matchParentWidth;
this.setLayoutParams(layoutParams);
this.invalidate();
}
}
} // end of Preview class
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