Android 使用 Face++ SDK 进行人脸识别和年龄检测，android 开发网络框架
void error(FaceppParseException exception);
}
public static void detect(final Bitmap bitmapDetect,
final FaceCallBack faceCallBack) {
new Thread(new Runnable() {
@Override
public void run() {
try {
// 请求
HttpRequests httpRequests = new HttpRequests(
Constant.FACE_API_KEY, Constant.FACE_API_SECRET,
true, true);
// Log.v(TAG, "image size : " + img.getWidth() + " " +
// img.getHeight());
ByteArrayOutputStream stream = new ByteArrayOutputStream();
float scale = Math.min(1, Math.min(
600f / bitmapDetect.getWidth(),
600f / bitmapDetect.getHeight()));
Matrix matrix = new Matrix();
matrix.postScale(scale, scale);
Bitmap imgSmall = Bitmap.createBitmap(bitmapDetect, 0, 0,
bitmapDetect.getWidth(), bitmapDetect.getHeight(),
matrix, false);
// Log.v(TAG, "imgSmall size : " + imgSmall.getWidth() + " "
// + imgSmall.getHeight());
imgSmall.compress(Bitmap.CompressFormat.JPEG, 100, stream);
byte[] array = stream.toByteArray();
PostParameters params = new PostParameters();
params.setImg(array);
JSONObject result = httpRequests.detectionDetect(params);
if(faceCallBack!=null){
faceCallBack.success(result);
}
} catch (FaceppParseException e) {
e.printStackTrace();
if(faceCallBack!=null){
faceCallBack.error(e);
}
}
}
}).start();
}
}
2.FaceDetectActivity:
package com.zms.carlauncher.ui;
import java.io.ByteArrayOutputStream;
import org.json.JSONArray;
import org.json.JSONException;
import org.json.JSONObject;
import android.app.Activity;
import android.content.Intent;
import android.database.Cursor;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.BitmapFactory.Options;
import android.graphics.Canvas;
import android.graphics.Color;
import android.graphics.Matrix;
import android.graphics.Paint;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.provider.MediaStore.Images.ImageColumns;
import android.text.TextUtils;
import android.util.Log;
import android.view.View;
import android.view.Window;
import android.view.WindowManager;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import com.facepp.error.FaceppParseException;
import com.facepp.http.HttpRequests;
import com.facepp.http.PostParameters;
import com.zms.carlauncher.Constant;
import com.zms.carlauncher.R;
import com.zms.carlauncher.util.FaceDetectUtil;
public class FaceDetectActivity extends Activity {
final private static String TAG = "FaceDetect";
final private int PICTURE_CHOOSE = 1;
private ImageView imagePhoto = null;
private Bitmap bitmapPhoto = null;
private Button but
tonDetect = null;
private TextView textState = null;
private View frameWait;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN,
WindowManager.LayoutParams.FLAG_FULLSCREEN);
setContentView(R.layout.activity_face_detect);
Button btnGetImage = (Button) this.findViewById(R.id.btnGetImage);
btnGetImage.setOnClickListener(new MyOnClickListener());
frameWait = findViewById(R.id.frameWait);
textState = (TextView) this.findViewById(R.id.textState);
buttonDetect = (Button) this.findViewById(R.id.buttonDetect);
buttonDetect.setVisibility(View.INVISIBLE);
buttonDetect.setOnClickListener(new MyOnClickListener());
imagePhoto = (ImageView) this.findViewById(R.id.imagePhoto);
imagePhoto.setImageBitmap(bitmapPhoto);
}
class MyOnClickListener implements View.OnClickListener {
@Override
public void onClick(View v) {
// TODO Auto-generated method stub
switch (v.getId()) {
case R.id.btnGetImage:
// 读取图库图片
Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
photoPickerIntent.setType("image/*");
startActivityForResult(photoPickerIntent, PICTURE_CHOOSE);
break;
case R.id.buttonDetect:
frameWait.setVisibility(View.VISIBLE);
FaceDetectUtil.detect(bitmapPhoto,
new FaceDetectUtil.FaceCallBack() {
@Override
public void success(JSONObject result) {
Message msg = Message.obtain();
msg.what = MSG_SUCCESS;
msg.obj = result;
faceHandler.sendMessage(msg);
}
@Override
public void error(FaceppParseException exception) {
Message msg = Message.obtain();
msg.what = MSG_ERROR;
msg.obj = exception.getErrorMessage();
faceHandler.sendMessage(msg);
}
});
break;
default:
break;
}
}
}
private static final int MSG_SUCCESS = 0x111;
private static final int MSG_ERROR = 0x112;
private Handler faceHandler = new Handler() {
public void handleMessage(android.os.Message msg) {
switch (msg.what) {
case MSG_SUCCESS:
frameWait.setVisibility(View.GONE);
JSONObject rst = (JSONObject) msg.obj;
Log.e(TAG, rst.toString());
prepareBitmap(rst);
imagePhoto.setImageBitmap(bitmapPhoto);
break;
case MSG_ERROR:
frameWait.setVisibility(View.GONE);
String errorMsg = (String) msg.obj;
if (TextUtils.isEmpty(errorMsg)) {
textState.setText("Error");
} else {
textState.setText(errorMsg);
}
break;
default:
break;
}
super.handleMessage(msg);
}
};
private Bitmap getGendorBitmap(int age, boolean isMale) {
// frameWait.setVisibility(View.VISIBLE);
TextView textAge = (TextView) frameWait.findViewById(R.id.textAge);
textAge.setVisibility(View.VISIBLE);
textAge.setText("" + age);
if (isMale) {
textAge.setTextColor(0xff1E88E5);
textAge.setCompoundDrawablesWithIntrinsicBounds(getResources()
.getDrawable(R.drawable.face_detect_male), null, null, null);
} else {
textAge.setTextColor(0xffff00ff);
textAge.setCompoundDrawablesWithIntrinsicBounds(getResources()
.getDrawable(R.drawable.face_detect_female), null, null,
null);
}
textAge.setDrawingCacheEnabled(true);
Bitmap bitmap = Bitmap.createBitmap(textAge.getDrawingCache());
textAge.destroyDrawingCache();
return bitmap;
}
protected void prepareBitmap(JSONObject rst) {
// 画笔
Paint paint = new Paint();
paint.setColor(Color.WHITE);
// paint.setStrokeWidth(Math.max(img.getWidth(),
// img.getHeight()) / 100f);
paint.setStrokeWidth(3);
// 画布
Bitmap bitmap = Bitmap.createBitmap(bitmapPhoto.getWidth(),
bitmapPhoto.getHeight(), bitmapPhoto.getConfig());
Canvas canvas = new Canvas(bitmap);
canvas.drawBitmap(bitmapPhoto, new Matrix(), null);
try {
// find out all faces
JSONArray faceArray = rst.getJSONArray("face");
final int faceCount = faceArray.length();
textState.setText("Finished, " + faceCount + " faces.");
for (int i = 0; i < faceCount; ++i) {
float x, y, w, h;
// 获取人脸中心
JSONObject faceObject = faceArray.getJSONObject(i);
JSONObject positionObject = faceObject
.getJSONObject("position");
x = (float) positionObject.getJSONObject("center").getDouble(
"x");
y = (float) faceObject.getJSONObject("position")
.getJSONObject("center").getDouble("y");
// 获取人脸大小
w = (float) positionObject.getDouble("width");
h = (float) positionObject.getDouble("height");
// 绘制人脸方框
x = x / 100 * bitmapPhoto.getWidth();
y = y / 100 * bitmapPhoto.getHeight();
w = w / 100 * bitmapPhoto.getWidth();
h = h / 100 * bitmapPhoto.getHeight();
canvas.drawLine(x - w / 2, y - h / 2, x - w / 2, y + h / 2,
paint);
canvas.drawLine(x - w / 2, y - h / 2, x + w / 2, y - h / 2,
paint);
canvas.drawLine(x + w / 2, y - h / 2, x + w / 2, y + h / 2,
paint);
canvas.drawLine(x - w / 2, y + h / 2, x + w / 2, y + h / 2,
paint);
// 性别和年龄
int age = faceObject.getJSONObject("attribute")
.getJSONObject("age").getInt("value");
int range = faceObject.getJSONObject("attribute")
.getJSONObject("age").getInt("range");
String gendorStr = faceObject.getJSONObject("attribute")
.getJSONObject("gender").getString("value"); // Male-Female
Bitmap ageBitmap = getGendorBitmap(age + range,
"Male".equals(gendorStr));
int ageWidth = ageBitmap.getWidth();
int ageHeight = ageBitmap.getHeight();
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