人脸检测的API例子.zip项目安卓应用源码下载

package cliu.TutorialOnFaceDetect; /* * TutorialOnFaceDetect * Download by http://www.codefans.net * [AUTHOR]: Chunyen Liu * [SDK ]: Android SDK 2.1 and up * [NOTE ]: developer.com tutorial, "Face Detection with Android APIs" */ import android.app.Activity; import android.graphics.Bitmap; import android.graphics.BitmapFactory; import android.graphics.PointF; import android.media.FaceDetector; import android.os.Bundle; import android.os.Handler; import android.os.Message; import android.util.Log; import android.widget.LinearLayout.LayoutParams; public class TutorialOnFaceDetect extends Activity { private MyImageView mIV; private Bitmap mFaceBitmap; private int mFaceWidth = 200; private int mFaceHeight = 200; private static final int MAX_FACES = 10; private static String TAG = "TutorialOnFaceDetect"; private static boolean DEBUG = false; protected static final int GUIUPDATE_SETFACE = 999; protected Handler mHandler = new Handler(){ // @Override public void handleMessage(Message msg) { mIV.invalidate(); super.handleMessage(msg); } }; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); mIV = new MyImageView(this); setContentView(mIV, new LayoutParams(LayoutParams.WRAP_CONTENT, LayoutParams.WRAP_CONTENT)); // load the photo Bitmap b = BitmapFactory.decodeResource(getResources(), R.drawable.face3); mFaceBitmap = b.copy(Bitmap.Config.RGB_565, true); b.recycle(); mFaceWidth = mFaceBitmap.getWidth(); mFaceHeight = mFaceBitmap.getHeight(); mIV.setImageBitmap(mFaceBitmap); mIV.invalidate(); // perform face detection in setFace() in a background thread doLengthyCalc(); } public void setFace() { FaceDetector fd; FaceDetector.Face [] faces = new FaceDetector.Face[MAX_FACES]; PointF eyescenter = new PointF(); float eyesdist = 0.0f; int [] fpx = null; int [] fpy = null; int count = 0; try { fd = new FaceDetector(mFaceWidth, mFaceHeight, MAX_FACES); count = fd.findFaces(mFaceBitmap, faces); } catch (Exception e) { Log.e(TAG, "setFace(): " + e.toString()); return; } // check if we detect any faces if (count > 0) { fpx = new int[count * 2]; fpy = new int[count * 2]; for (int i = 0; i < count; i++) { try { faces[i].getMidPoint(eyescenter); eyesdist = faces[i].eyesDistance(); // set up left eye location fpx[2 * i] = (int)(eyescenter.x - eyesdist / 2); fpy[2 * i] = (int)eyescenter.y; // set up right eye location fpx[2 * i + 1] = (int)(eyescenter.x + eyesdist / 2); fpy[2 * i + 1] = (int)eyescenter.y; if (DEBUG) Log.e(TAG, "setFace(): face " + i + ": confidence = " + faces[i].confidence() + ", eyes distance = " + faces[i].eyesDistance() + ", pose = ("+ faces[i].pose(FaceDetector.Face.EULER_X) + "," + faces[i].pose(FaceDetector.Face.EULER_Y) + "," + faces[i].pose(FaceDetector.Face.EULER_Z) + ")" + ", eyes midpoint = (" + eyescenter.x + "," + eyescenter.y +")"); } catch (Exception e) { Log.e(TAG, "setFace(): face " + i + ": " + e.toString()); } } } mIV.setDisplayPoints(fpx, fpy, count * 2, 1); } private void doLengthyCalc() { Thread t = new Thread() { Message m = new Message(); public void run() { try { setFace(); m.what = TutorialOnFaceDetect.GUIUPDATE_SETFACE; TutorialOnFaceDetect.this.mHandler.sendMessage(m); } catch (Exception e) { Log.e(TAG, "doLengthyCalc(): " + e.toString()); } } }; t.start(); } }