使用face++的API接口-手势识别

た入场券 2022-06-08 12:36 274阅读 0赞

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" android: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

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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

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