使用face++的API接口-手势识别

本文地址：http://blog.csdn.net/tiandixuanwuliang/article/details/78089775

本文将介绍如何使用face++的API接口实现手势识别。

手势识别和人脸识别基本代码相同，请大家结合“使用face++的API接口-人脸识别”一文学习。

一、GestureFragment.java代码（核心逻辑代码）

package com.wllfengshu.boyandgirl;

import java.io.IOException;
import java.util.HashMap;
import java.util.Map;

import org.json.JSONException;
import org.json.JSONObject;

import android.annotation.SuppressLint;
import android.app.Fragment;
import android.content.Intent;
import android.graphics.Bitmap;
import android.graphics.BitmapFactory;
import android.graphics.Paint;
import android.os.Bundle;
import android.os.Handler;
import android.os.Message;
import android.view.LayoutInflater;
import android.view.View;
import android.view.View.OnClickListener;
import android.view.ViewGroup;
import android.widget.Button;
import android.widget.ImageView;
import android.widget.TextView;
import android.widget.Toast;

import com.wllfengshu.util.Constant;
import com.wllfengshu.util.DrawUtil;
import com.wllfengshu.util.GifView;
import com.wllfengshu.util.HttpUtils;
import com.wllfengshu.util.ImageUtil;

@SuppressLint({ "NewApi", "HandlerLeak" })
public class GestureFragment extends Fragment implements OnClickListener {
private ImageView iv_gesture;
private Button ib_gesture_enter;
private Button ib_gesture_choice;

private TextView tv_gesture;

private Bitmap scalingPhoto;// 浣嶅浘

private String gesture;

private Paint paint;// 鐢荤瑪宸ュ叿
private View view;
private GifView gif;

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
Bundle savedInstanceState) {
view = inflater.inflate(R.layout.fragment_gesture, container, false);

iv_gesture = (ImageView) view.findViewById(R.id.iv_gesture);
ib_gesture_enter = (Button) view.findViewById(R.id.ib_gesture_enter);
ib_gesture_choice = (Button) view.findViewById(R.id.ib_gesture_choice);

tv_gesture = (TextView) view.findViewById(R.id.tv_gesture);
gif = (GifView) view.findViewById(R.id.gif);
ib_gesture_enter.setOnClickListener(this);
ib_gesture_choice.setOnClickListener(this);

paint = new Paint();

scalingPhoto = BitmapFactory.decodeResource(this.getResources(),
R.drawable.defualtg);
return view;
}

@SuppressLint("HandlerLeak")
private Handler handler = new Handler() {
@Override
public void handleMessage(Message msg) {
String str = (String) msg.obj;
System.out.println("********gesture:" + str);
if (str.equals("403") || str.equals("400") || str.equals("413")
|| str.equals("500")) {
Toast.makeText(getActivity(), "Please Try Again",
Toast.LENGTH_SHORT).show();
} else {
try {
JSONObject resultJSON = new JSONObject(str);
gesture = DrawUtil.GesturePrepareBitmap(resultJSON,
scalingPhoto, paint, iv_gesture);

System.out.println("------------gesture" + gesture);

tv_gesture.setText("手势:" + gesture);
} catch (JSONException e) {
e.printStackTrace();
}
}
gif.setVisibility(View.GONE);// 鍋滄gif
};
};

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
if (requestCode == 1) {

if (data != null) {

String photoPath = ImageUtil.getPhotoPath(getActivity(), data);

scalingPhoto = ImageUtil.getScalingPhoto(photoPath);

iv_gesture.setImageBitmap(scalingPhoto);
}
}
super.onActivityResult(requestCode, resultCode, data);
}

@Override
public void onClick(View v) {
switch (v.getId()) {
case R.id.ib_gesture_choice:

Intent intent = new Intent();
intent.setAction(Intent.ACTION_PICK);
intent.setType("image/*");
startActivityForResult(intent, 1);
break;
case R.id.ib_gesture_enter:

gif.setVisibility(View.VISIBLE);
gif.setMovieResource(R.raw.red);

String base64ImageEncode = ImageUtil
.getBase64ImageEncode(scalingPhoto);
System.out.println(base64ImageEncode);

final Map<String, Object> map = new HashMap<String, Object>();
map.put("api_key", Constant.API_KEY);
map.put("api_secret", Constant.API_SECRET);
map.put("image_base64", base64ImageEncode);

new Thread(new Runnable() {
@Override
public void run() {
try {
String result = HttpUtils.post(Constant.URL_GESTURE,
map);
Message message = new Message();
message.obj = result;
handler.sendMessage(message);
} catch (IOException e) {
e.printStackTrace();
}
}
}).start();
break;
}
}
}

二、手势返回值解析：

public static String GesturePrepareBitmap(JSONObject jsObject,
Bitmap scalingPhoto, Paint paint, ImageView imageView)
throws JSONException {
String gestureEN = "";
Bitmap bitmapPre = Bitmap.createBitmap(scalingPhoto.getWidth(),
scalingPhoto.getHeight(), scalingPhoto.getConfig());
Canvas canvas = new Canvas(bitmapPre);
canvas.drawBitmap(scalingPhoto, 0, 0, null);

final JSONArray jsonArray = jsObject.getJSONArray("hands");
Integer num = jsonArray.length();
for (int i = 0; i < num; i++) {
JSONObject hands = jsonArray.getJSONObject(i);
JSONObject postion = hands.getJSONObject("hand_rectangle");
JSONObject gesture = hands.getJSONObject("gesture");

Map<String, Double> mapGesture = ImageUtil.GetMapGesture(gesture);

String gestureUS = ImageUtil.getGestureUS(mapGesture);
gestureEN = ImageUtil.getGestureENS(gestureUS);
System.out.println("-- " + gestureEN);

float y = (float) postion.getDouble("top");
float x = (float) postion.getDouble("left");

float w = (float) postion.getDouble("width");
float h = (float) postion.getDouble("height");
System.out.println("x:" + x + " y:" + y + " w:" + w + " h" + h);

System.out.println(bitmapPre.getWidth() + "   "
+ bitmapPre.getHeight());
System.out.println("x:" + x + " y:" + y + " w:" + w + " h" + h);

paint.setColor(Color.RED);
paint.setStrokeWidth(5);

canvas.drawLine(x, y, x + w, y, paint);
canvas.drawLine(x, y + h, x + w, y + h, paint);
canvas.drawLine(x, y, x, y + h, paint);
canvas.drawLine(x + w, y, x + w, y + h, paint);

scalingPhoto = bitmapPre;
imageView.setImageBitmap(scalingPhoto);
}
return gestureEN;
}

三、手势识别布局界面

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent" >

<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:text="手势识别"
android:textSize="20sp" />
<ImageView
android:id="@+id/iv_gesture"
android:layout_width="200dp"
android:layout_height="300dp"
android:layout_alignParentTop="true"
android:layout_centerHorizontal="true"
android:contentDescription="人脸图片"
a
4000
ndroid:paddingTop="40dp"
android:src="@drawable/defualtg" />

<LinearLayout
android:id="@+id/ll_gesture"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_below="@id/iv_gesture"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:gravity="center_horizontal"
android:orientation="horizontal" >

<Button
android:id="@+id/ib_gesture_enter"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/enter"
android:text="确定" />

<Button
android:id="@+id/ib_gesture_choice"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="@drawable/choose"
android:text="选择图片" />
</LinearLayout>

<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_below="@id/ll_gesture"
android:orientation="horizontal"
android:paddingTop="20dp" >

<TextView
android:id="@+id/tv_gesture"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center"
android:src="@drawable/ic_launcher"
android:text="手势"
android:textSize="20sp" />
</LinearLayout>

<com.wllfengshu.util.GifView
android:id="@+id/gif"
android:layout_width="200dp"
android:layout_height="200dp"
android:layout_centerHorizontal="true"
android:layout_gravity="center_horizontal"
android:layout_marginTop="60dp"
android:enabled="false" />

</RelativeLayout>

四、手势识别界面



本文还有一些其他的封装函数，由于篇幅问题不一一粘贴，请大家自行下载本文代码案例：

下载地址：http://download.csdn.net/download/tiandixuanwuliang/9984027