借助百度云中的百度人脸识别用java开发一个人脸识别

╰+哭是因爲堅強的太久メ 2021-09-14 02:56 350阅读 0赞

[http://m.blog.csdn.net/u010651369/article/details/64439090][http_m.blog.csdn.net_u010651369_article_details_64439090]

1.官网文档必须看

http://ai.baidu.com/docs

![091109_hCT9_1444646.png][]

2.在管理中心创建应用及查看相关参数 AppID APIKey SecretKey都需要保存起来

![091302_f21B_1444646.png][]

3.搬砖测试

项目需要的lib包，基本下载官网的SDK就都会包含。

![094040_e1J9_1444646.png][]

package com.xs.demo.common; //相关的必要参数可以保存到常量 public class APIConstants { //百度人脸识别应用id public static final String APPID = "管理中心获得"; //百度人脸识别应用apikey public static final String API_KEY = "管理中心获得"; //百度人脸识别应用sercetkey public static final String SERCET_KEY = "管理中心获得"; //百度人脸识别token 有效期一个月 public static final String TOKEN = "为了测试，将生成的key先存一下"; }

4.获取AccessToken

官网文档说明http://ai.baidu.com/docs\#Beginner-Auth

向授权服务地址`https://aip.baidubce.com/oauth/2.0/token`发送请求（推荐使用POST），并在URL中带上以下参数：

*  grant\_type: 必须参数，固定为“client\_credentials”；
 *  client\_id: 必须参数，应用的API Key；
 *  client\_secret: 必须参数，应用的Secret Key；

//获取AccessToken 有效期一个月
    public class AITest {
    	public static void main(String[] args) throws Exception {;
    		String access_token_url = "https://aip.baidubce.com/oauth/2.0/token?grant_type=client_credentials" +
    				"&client_id="+APIContants.API_KEY
    			   +"&client_secret="+ APIContants.SERCET_KEY;
    		HttpResponse response = HttpUtils.doPostBD(access_token_url,new HashMap<String, String>(),new HashMap<String, String>());
    		System.out.println(EntityUtils.toString(response.getEntity()));
    		
    	}
    }

//返回的JSON数据。只需要access_token即可
    {
       "access_token":"24.39b6fc97e87058ed6edb92ad68782c29.2592000.1492651482.11111-11111","session_key":"9mzdCP1XKXZ5yipkl7ubftudl2reGQybIG25NqWi9vqeSFFjxigLFl+WpfDW0PyUt7EP\/Uyn74r31lj3d4kVr4xkbkSk","scope":"public vis-faceverify_faceverify vis-faceattribute_faceattribute wise_adapt lebo_resource_base lightservice_public hetu_basic lightcms_map_poi kaidian_kaidian wangrantest_test wangrantest_test1 bnstest_test1 bnstest_test2 ApsMisTest_Test\u6743\u9650 vis-classify_flower","refresh_token":"25.3c8370eaeb8af4f8367a38b6dbefcef9.315360000.1805419482.11111-11111","session_secret":"ff06850552b385cff19de958e435e6a4","expires_in":2592000}

5.HttpUtils工具类代码

package com.xs.demo.util; import java.io.UnsupportedEncodingException; import java.net.URLEncoder; import java.security.KeyManagementException; import java.security.NoSuchAlgorithmException; import java.security.cert.X509Certificate; import java.util.ArrayList; import java.util.List; import java.util.Map; import javax.net.ssl.SSLContext; import javax.net.ssl.TrustManager; import javax.net.ssl.X509TrustManager; import org.apache.commons.lang.StringUtils; import org.apache.http.HttpResponse; import org.apache.http.NameValuePair; import org.apache.http.client.HttpClient; import org.apache.http.client.entity.UrlEncodedFormEntity; import org.apache.http.client.methods.HttpDelete; import org.apache.http.client.methods.HttpGet; import org.apache.http.client.methods.HttpPost; import org.apache.http.client.methods.HttpPut; import org.apache.http.conn.ClientConnectionManager; import org.apache.http.conn.scheme.Scheme; import org.apache.http.conn.scheme.SchemeRegistry; import org.apache.http.conn.ssl.SSLSocketFactory; import org.apache.http.entity.ByteArrayEntity; import org.apache.http.entity.StringEntity; import org.apache.http.impl.client.DefaultHttpClient; import org.apache.http.message.BasicNameValuePair; /** * httpClient工具类 * @author 小帅帅丶 * @date 2017-3-21上午09:28:21 */ public class HttpUtils { /** * * @Title doPostBD * @param url 接口地址 * @param method 请求方式 * @param headers * @param bodys * @return response * @throws Exception * @author 小帅帅丶 * @date 2017-3-20 * */ public static HttpResponse doPostBD(String url, Map<String, String> headers, Map<String, String> bodys) throws Exception { HttpClient httpClient = wrapClient(url); HttpPost request = new HttpPost(url); for (Map.Entry<String, String> e : headers.entrySet()) { request.addHeader(e.getKey(), e.getValue()); } if (bodys != null) { List<NameValuePair> nameValuePairList = new ArrayList<NameValuePair>(); for (String key : bodys.keySet()) { nameValuePairList.add(new BasicNameValuePair(key, bodys.get(key))); } UrlEncodedFormEntity formEntity = new UrlEncodedFormEntity(nameValuePairList, "utf-8"); formEntity.setContentType("application/x-www-form-urlencoded; charset=UTF-8"); request.setEntity(formEntity); } return httpClient.execute(request); } private static HttpClient wrapClient(String host) { HttpClient httpClient = new DefaultHttpClient(); if (host.startsWith("https://")) { sslClient(httpClient); } return httpClient; } private static void sslClient(HttpClient httpClient) { try { SSLContext ctx = SSLContext.getInstance("TLS"); X509TrustManager tm = new X509TrustManager() { public X509Certificate[] getAcceptedIssuers() { return null; } public void checkClientTrusted(X509Certificate[] xcs, String str) { } public void checkServerTrusted(X509Certificate[] xcs, String str) { } }; ctx.init(null, new TrustManager[] { tm }, null); SSLSocketFactory ssf = new SSLSocketFactory(ctx); ssf.setHostnameVerifier(SSLSocketFactory.ALLOW_ALL_HOSTNAME_VERIFIER); ClientConnectionManager ccm = httpClient.getConnectionManager(); SchemeRegistry registry = ccm.getSchemeRegistry(); registry.register(new Scheme("https", 443, ssf)); } catch (KeyManagementException ex) { throw new RuntimeException(ex); } catch (NoSuchAlgorithmException ex) { throw new RuntimeException(ex); } } }

6.检测人脸美丑及年龄

http://ai.baidu.com/docs\#FACE官网文档

请求参数

<table style="border-collapse:collapse; border-spacing:0px; max-width:100%; word-break:break-all; border:0.05rem solid rgb(238,238,238); color:rgb(51,51,51); font-family:sans-serif; font-size:24px"> 
 <tbody style=""> 
  <tr style=""> 
   <th style="text-align:left; border:0.05rem solid rgb(238,238,238)">&nbsp;</th> 
   <th style="text-align:left; border:0.05rem solid rgb(238,238,238)">是否必选</th> 
   <th style="text-align:left; border:0.05rem solid rgb(238,238,238)">类型</th> 
   <th style="text-align:left; border:0.05rem solid rgb(238,238,238)">说明</th> 
  </tr> 
 </tbody> 
 <tbody style=""> 
  <tr style=""> 
   <td style="border:0.05rem solid rgb(238,238,238)">image</td> 
   <td style="border:0.05rem solid rgb(238,238,238)">是</td> 
   <td style="border:0.05rem solid rgb(238,238,238)">string</td> 
   <td style="border:0.05rem solid rgb(238,238,238)">base64编码后的图片数据，图片大小不超过2M。</td> 
  </tr> 
  <tr style=""> 
   <td style="border:0.05rem solid rgb(238,238,238)">max_face_num</td> 
   <td style="border:0.05rem solid rgb(238,238,238)">否</td> 
   <td style="border:0.05rem solid rgb(238,238,238)">uint32</td> 
   <td style="border:0.05rem solid rgb(238,238,238)">最多处理人脸数目，默认值1</td> 
  </tr> 
  <tr style=""> 
   <td style="border:0.05rem solid rgb(238,238,238)">face_fields</td> 
   <td style="border:0.05rem solid rgb(238,238,238)">否</td> 
   <td style="border:0.05rem solid rgb(238,238,238)">string</td> 
   <td style="border:0.05rem solid rgb(238,238,238)">包括age,beauty,expression,faceshape,gender,glasses,landmark,race,qualities信息，逗号分隔，默认只返回人脸框、概率和旋转角度。</td> 
  </tr> 
 </tbody> 
</table>

*  URL参数：

*  Header如下：

*  Body中数据如下：

package com.xs.demo.test; import java.util.HashMap; import java.util.Map; import org.apache.http.HttpResponse; import org.apache.http.util.EntityUtils; import com.xs.demo.common.APIConstants; import com.xs.demo.util.HttpUtils; import com.xs.demo.util.Image4Base64; //人脸识别 百度一张如花的图片 public class Test { public static void main(String[] args) { /****************/ String Filepath = "F:/ruhua.jpg"; String image = Image4Base64.GetImageStr(Filepath); String url = "https://aip.baidubce.com/rest/2.0/face/v1/detect?access_token="+APIConstants.TOKEN; Map<String, String> headers = new HashMap<String, String>(); Map<String, String> bodys = new HashMap<String, String>(); headers.put("Content-Type", "application/x-www-form-urlencoded"); bodys.put("image", image); bodys.put("face_fields", "age,beauty,expression,gender,glasses,race,qualities"); try { HttpResponse response = HttpUtils.doPostBD(url,headers,bodys); System.out.println(EntityUtils.toString(response.getEntity())); } catch (Exception e) { e.printStackTrace(); } } }

7.返回JSON字符串内容

age 年龄  （目前官网还是没有说明年龄的误差范围）

beauty 美丑分数 0-100 越大值越美（之前官网写的是0-1在我发现错误时，提交官网，官网及时做了修改）

如花识别年龄38  美丑评分21  表示不太合理

{
      "result": [{
        "expression": 0,
        "face_probability": 1,
        "glasses": 0,
        "location": {
          "height": 155,
          "width": 136,
          "left": 103,
          "top": 49
        },
        "beauty": 21.201513290405,
        "race": "yellow",
        "expression_probablity": 0.77510279417038,
        "rotation_angle": 9,
        "yaw": 2.6519072055817,
        "roll": 10.0813331604,
        "qualities": {
          "completeness": 0,
          "occlusion": {
            "left_eye": 0,
            "chin": 0,
            "mouth": 0,
            "right_cheek": 0,
            "left_cheek": 0,
            "nose": 0,
            "right_eye": 0
          },
          "blur": 0,
          "type": {
            "cartoon": 0.0060238856822252,
            "human": 0.99397611618042
          },
          "illumination": 0
        },
        "gender_probability": 0.93728905916214,
        "age": 37.866649627686,
        "gender": "male",
        "glasses_probability": 0.99999260902405,
        "race_probability": 0.99436098337173,
        "pitch": -17.080112457275
      }],
      "result_num": 1,
      "log_id": 2045651588
    }

8.SDK调用

/** * 基于百度SDK提供的方法进行调用 * @author 小帅帅丶 * @date 2017-3-20下午06:00:05 */ public class Sample { public static void main(String[] args) { //初始化一个FaceClient AipFace face = new AipFace(APIConstants.APPID,APIConstants.API_KEY,APIConstants.SERCET_KEY); //可选：设置网络连接参数 face.setConnectionTimeoutInMillis(60000); face.setSocketTimeoutInMillis(60000); //调用API HashMap map = new HashMap(); // map.put("face_fields", "age,beauty,expression,gender,glasses,race,qualities"); String path = "F:/ruhua.jpg"; AipRequest aipRequest = new AipRequest(); aipRequest.setBody(map); JSONObject result = face.detect(Image4Base64.GetImageStrByte(path),map); System.out.println(result.toString(2)); } }

以上就是百度人脸识别API的调用测试流程及demo

[http_m.blog.csdn.net_u010651369_article_details_64439090]: http://m.blog.csdn.net/u010651369/article/details/64439090
[091109_hCT9_1444646.png]: https://static.oschina.net/uploads/space/2017/0321/091109_hCT9_1444646.png
[091302_f21B_1444646.png]: https://static.oschina.net/uploads/space/2017/0321/091302_f21B_1444646.png
[094040_e1J9_1444646.png]: https://static.oschina.net/uploads/space/2017/0321/094040_e1J9_1444646.png