人脸识别
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2022-05-13 21:40:23
今天介绍的是通过face++联网API实现人脸识别功能、打开相机及从相册获取图片功能。 文档请到face++官网查看（https://www.faceplusplus.com.cn/） 程序的主流程: 1、创建一个人脸的集合FaceSet，用于存储人脸标识 face_token 调用face++的u ......
今天介绍的是通过face++联网API实现人脸识别功能、打开相机及从相册获取图片功能。
文档请到face++官网查看（https://www.faceplusplus.com.cn/）
程序的主流程:
1、创建一个人脸的集合FaceSet，用于存储人脸标识 face_token
调用face++的url:https://api-cn.faceplusplus.com/facepp/v3/faceset/create
1 RequestParams params = new RequestParams();
2 params.put("api_key",Constant.Key);
3 params.put("api_secret",Constant.Secret);
4 params.put("display_name","FaceSet");
5 params.put("outer_id","faceSet");
6
7 HttpUtil.post(Constant.createUrl,params,new AsyncHttpResponseHandler(){
8 @Override
9 public void onSuccess(String resultJson) {
10 super.onSuccess(resultJson);
11 Log.e("createFaceSet==Success","success");
12 Log.e("resultJson===",resultJson.toString());
13 }
14
15 @Override
16 public void onFailure(Throwable throwable, String resultJson) {
17 super.onFailure(throwable, resultJson);
18 Log.e("createFaceSet==Error","error");
19 Log.e("resultJson===",resultJson.toString());
20 Toast.makeText(MainActivity.this,"createFaceSet=="+resultJson.toString(),Toast.LENGTH_SHORT).show();
21 }
22 });
2、传入图片进行人脸检测和人脸分析
调用face++的url:https://api-cn.faceplusplus.com/facepp/v3/detect
1 Bitmap bitmap = BitmapFactory.decodeFile(urlImg);
2 ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
3 bitmap.compress(Bitmap.CompressFormat.JPEG,100,outputStream );
4 byte[] imagebyte = outputStream.toByteArray();
5 String image_base64 = Constant.encode(imagebyte);
6 RequestParams params = new RequestParams();
7 params.put("api_key", Constant.Key);
8 params.put("api_secret",Constant.Secret);
9 params.put("image_base64",image_base64);
10 params.put("return_attributes","gender,age");
11
12 HttpUtil.post(Constant.detectUrl,params,new AsyncHttpResponseHandler(){
13 @Override
14 public void onSuccess(String resultJson) {
15 super.onSuccess(resultJson);
16 Log.e("detect==testSuccess","success");
17 Log.e("resultJson===",resultJson.toString());
18 result.setText(resultJson.toString());
19 if(resultJson != null){
20 JSONObject object;
21 try {
22 object = new JSONObject(resultJson);
23 JSONArray array = object.getJSONArray("faces");
24 String face_token = null;
25 for(int i = 0;i<array.length();i++){
26 JSONObject oj = (JSONObject) array.get(i);
27 face_token = (String) oj.get("face_token");
28 }
29 if(face_token != null){
30 Log.e("face_token",face_token);
31 if (state == 1){
32 addFace(face_token);
33 }else if(state == 2){
34 serachFace(face_token);
35 }else{
36 Toast.makeText(MainActivity.this,"state=="+state,Toast.LENGTH_SHORT).show();
37 }
38 }else{
39 Toast.makeText(MainActivity.this,"上传图片无法获取人脸标识",Toast.LENGTH_SHORT).show();
40 }
41 } catch (JSONException e) {
42 e.printStackTrace();
43 }
44 }
45
46 }
47
48 @Override
49 public void onFailure(Throwable throwable, String resultJson) {
50 super.onFailure(throwable, resultJson);
51 Log.e("detect==testError","error");
52 Log.e("resultJson===",resultJson.toString());
53 Toast.makeText(MainActivity.this,"detect=="+resultJson.toString(),Toast.LENGTH_SHORT).show();
54 result.setText(resultJson.toString());
55 }
56 });
3、为一个已创建的人脸集合FaceSet 添加人脸标识face_token
调用face++的url: https://api-cn.faceplusplus.com/facepp/v3/faceset/addface
1 RequestParams params = new RequestParams();
2 params.put("api_key",Constant.Key);
3 params.put("api_secret",Constant.Secret);
4 params.put("faceset_token",faceset_token);
5 params.put("face_tokens",face_token);
6
7 HttpUtil.post(Constant.addfaceUrl,params,new AsyncHttpResponseHandler(){
8 @Override
9 public void onSuccess(String resultJson) {
10 super.onSuccess(resultJson);
11 Log.e("addFace==Success","success");
12 Log.e("resultJson===",resultJson.toString());
13 JSONObject object;
14 try {
15 object = new JSONObject(resultJson);
16 int face_added = Integer.parseInt(object.getString("face_added"));
17 if(face_added > 0){
18 Toast.makeText(MainActivity.this,"添加人脸标识成功!",Toast.LENGTH_SHORT).show();
19 }else{
20 Toast.makeText(MainActivity.this,"添加人脸标识失败!",Toast.LENGTH_SHORT).show();
21 }
22 } catch (JSONException e) {
23 e.printStackTrace();
24 }
25 }
26
27 @Override
28 public void onFailure(Throwable throwable, String resultJson) {
29 super.onFailure(throwable, resultJson);
30 Log.e("addFace==Error","error");
31 Log.e("resultJson===",resultJson.toString());
32 Toast.makeText(MainActivity.this,"addFace=="+resultJson.toString(),Toast.LENGTH_SHORT).show();
33 }
34 });
4、在一个已有的人脸集合FaceSet 中找出与目标人脸最相似的一张或多张人脸,返回置信度和不同误识率下的阈值
调用face++的url:https://api-cn.faceplusplus.com/facepp/v3/search
1 RequestParams params = new RequestParams();
2 params.put("api_key",Constant.Key);
3 params.put("api_secret",Constant.Secret);
4 params.put("face_token",face_token);
5 params.put("faceset_token",faceset_token);
6 /**
7 * 控制返回比对置信度最高的结果的数量。合法值为一个范围 [1,5] 的整数。默认值为 1
8 */
9
10 HttpUtil.post(Constant.searchUrl,params,new AsyncHttpResponseHandler(){
11 @Override
12 public void onSuccess(String resultJson) {
13 super.onSuccess(resultJson);
14 Log.e("serachFace==Success","success");
15 Log.e("resultJson===",resultJson.toString());
16 JSONObject object;
17 try {
18 object = new JSONObject(resultJson);
19 JSONArray array = object.getJSONArray("results");
20 //比对结果置信度
21 int confidence = 0;
22 for(int i = 0;i<array.length();i++){
23 JSONObject oj = (JSONObject) array.get(i);
24 confidence = oj.getInt("confidence");
25 }
26 if(confidence != 0){
27 Log.e("confidence",confidence+"");
28 if(confidence >= 80){
29 AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
30 builder.setTitle("比对结果");
31 builder.setMessage("通过");
32 byte[] requestData;
33 requestData = CommandGenerate.generateLockCmd(CommandGenerate.CMD.UNLOCK,4);
34 sendDataToSerial(requestData);
35 builder.show();
36 }else{
37 AlertDialog.Builder builder = new AlertDialog.Builder(MainActivity.this);
38 builder.setTitle("比对结果");
39 builder.setMessage("未通过");
40 builder.show();
41 //Toast.makeText(MainActivity.this,"比对结果置信度低于80=="+confidence,Toast.LENGTH_SHORT).show();
42 }
43 }else {
44 Toast.makeText(MainActivity.this,"FaceSet中未搜索到相吻合的信息",Toast.LENGTH_SHORT).show();
45 }
46 } catch (JSONException e) {
47 e.printStackTrace();
48 }
49 }
50 @Override
51 public void onFailure(Throwable throwable, String resultJson) {
52 super.onFailure(throwable, resultJson);
53 Log.e("serachFace==Error","error");
54 Log.e("resultJson===",resultJson.toString());
55 Toast.makeText(MainActivity.this,"serachFace=="+resultJson.toString(),Toast.LENGTH_SHORT).show();
56 }
57 });
项目源码:http://download.csdn.net/download/daxudada/10229284
希望对大家有用，如有问题请多多指教。关注我哟