写了一些Face++人脸识别与检索的接口调用的例子,包含
使用新的face_token和自己的faceset人脸库进行人脸检索(避免每次都上传图片)
官方提供的接口sdk文档里有充分的说明,基本上都可以看懂,废话不多说,上代码。
package com.huiyiygy.face.util;
import java.io.ByteArrayOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import org.json.JSONArray;
import org.json.JSONObject;
import com.megvii.cloud.http.CommonOperate;
import com.megvii.cloud.http.FaceSetOperate;
import com.megvii.cloud.http.Response;
public class FaceUtil {
//正式key
private static String apiKey = "替换成你自己申请的apikey";
private static String apiSecret = "替换成你自己的apisecret";
//用initFaceSet()生成 用于存储所有学生的人脸
private static String FaceSetToken="用initFaceSet()生成得到";
//用initTempFaceSet()生成 用于进行人脸比对签到存储的临时人脸,每次上传新合照,其人脸都会清空重新添加
private static String TempFaceSetToken="用initTempFaceSet()生成";
// private static String imgPath = "F:/face/IMG_20161006_181034.jpg";
// private static String imgPath2= "F:/face/IMG_20170612_163951.jpg";
// private static String hezhao= "F:/face/IMG_20170119_083458.jpg";
/**
* Function:
* 获取图片的二进制文件
* @DateTime 2017年12月5日下午5:51:18
*/
public static byte[] getBytesFromFile(File f) {
if (f == null) {
return null;
}
try {
FileInputStream stream = new FileInputStream(f);
ByteArrayOutputStream out = new ByteArrayOutputStream(1000);
byte[] b = new byte[1000];
int n;
while ((n = stream.read(b)) != -1)
out.write(b, 0, n);
stream.close();
out.close();
return out.toByteArray();
} catch (IOException e) {
}
return null;
}
/**
* Function:
* 获取图片的faceToken(数量可能为0)
* @DateTime 2017年12月5日下午5:38:39
*/
public static List getFaceToken(String imagePath){
File file = new File(imagePath);
byte[] fileByte = getBytesFromFile(file);
List faceTokens = new ArrayList();
CommonOperate commonOperate = new CommonOperate(apiKey, apiSecret, false);
try {
Response response = commonOperate.detectByte(fileByte, 0, "");
String result = new String(response.getContent(),"UTF-8");
if(response.getStatus() == 200) {//当请求正确回复时处理
JSONObject jsonObject = new JSONObject(result);
JSONArray faces = jsonObject.getJSONArray("faces");
for(int i = 0; i < faces.length(); i++) {
JSONObject face = faces.getJSONObject(i);
faceTokens.add(face.getString("face_token"));
}
}else{//出现错误时打印错误信息
System.out.println(response.getStatus() + "\n" +result);
}
} catch (Exception e) {
e.printStackTrace();
}
return faceTokens;
}
/**
* Function:
* 人脸比对(返回识别到的人脸的token)默认为空
* @DateTime 2017年12月6日下午1:45:46
*/
public static String searchByFaceSetToken(String faceToken){
CommonOperate commonOperate = new CommonOperate(apiKey, apiSecret, false);
String face_token = null;
try {
Response response = commonOperate.searchByFaceSetToken(faceToken, null, null, FaceSetToken, 1);
String result = new String(response.getContent(),"UTF-8");
if(response.getStatus() == 200) {//当请求正确回复时处理
JSONObject jsonObject = new JSONObject(result);
JSONArray resultArray = jsonObject.getJSONArray("results");
JSONObject face1 = resultArray.getJSONObject(0);
double confidence = face1.getDouble("confidence");
if(confidence > 80) {//判断人脸识别率高于80时,认为是同一个人,可以自己设置
face_token = face1.getString("face_token");
}
}else{//出现错误时打印错误信息
System.out.println(response.getStatus() + "\n" +result);
}
} catch (Exception e) {
e.printStackTrace();
}
return face_token;
}
/**
* Function:
* 将facetoken放入faceSet中,多张人脸token用逗号隔开
* @DateTime 2017年12月5日下午5:38:43
*/
public static boolean addFace2Set(String faceToken, String faceSetToken){
FaceSetOperate faceSetOperate = new FaceSetOperate(apiKey, apiSecret, false);
try {
Response response = faceSetOperate.addFaceByFaceToken(faceToken, faceSetToken);
String result = new String(response.getContent(),"UTF-8");
if(response.getStatus() == 200) {//当请求正确回复时处理
JSONObject jsonObject = new JSONObject(result);
int added = jsonObject.getInt("face_added");
if(added > 0) {
return true;
}
}else{//出现错误时打印错误信息
System.out.println(response.getStatus() + "\n" +result);
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
/**
* Function:
* 将facetoken从faceset中移除
* 注:face_tokens字符串传入“RemoveAllFaceTokens”则会移除FaceSet内所有的face_token
* @DateTime 2017年12月6日下午1:11:53
*/
public static boolean removeFaceFromSet(String faceToken, String faceSetToken){
FaceSetOperate faceSetOperate = new FaceSetOperate(apiKey, apiSecret, false);
try {
Response response = faceSetOperate.removeFaceFromFaceSetByFaceSetToken(faceSetToken, faceToken);
String result = new String(response.getContent(),"UTF-8");
if(response.getStatus() == 200) {//当请求正确回复时处理
JSONObject jsonObject = new JSONObject(result);
int removed = jsonObject.getInt("face_removed");
if(removed > 0) {
return true;
}
}else{//出现错误时打印错误信息
System.out.println(response.getStatus() + "\n" +result);
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
/**
* Function:
* 移除FaceSet中的所有facetoken
* @DateTime 2017年12月20日下午2:18:35
*/
public static boolean removeAllFaceFromSet(String faceSetToken){
FaceSetOperate faceSetOperate = new FaceSetOperate(apiKey, apiSecret, false);
try {
Response response = faceSetOperate.removeFaceFromFaceSetByFaceSetToken(faceSetToken, "RemoveAllFaceTokens");
String result = new String(response.getContent(),"UTF-8");
if(response.getStatus() == 200) {//当请求正确回复时处理
JSONObject jsonObject = new JSONObject(result);
int face_count = jsonObject.getInt("face_count");
if(face_count == 0) {
return true;
}
}else{//出现错误时打印错误信息
System.out.println(response.getStatus() + "\n" +result);
}
} catch (Exception e) {
e.printStackTrace();
}
return false;
}
/**
* Function:
* 创建默认的faceset集合,只用创建一次
* @DateTime 2017年12月5日下午4:22:51
*/
public static void initFaceSet() {
String displayName = "人脸库";
String outerId = "studentFace";
String tags ="student";
String FaceTokens = "bce2aa4f315afe95ec21811b72bd4cb4";//72小时内有效
String userData = "";
int ForceMerge = 0;
FaceSetOperate faceSetOperate = new FaceSetOperate(apiKey, apiSecret, false);
try {
Response response = faceSetOperate.createFaceSet(displayName, outerId, tags, FaceTokens, userData, ForceMerge);
String result = new String(response.getContent(),"UTF-8");
System.out.println(result);
} catch (Exception e) {
e.printStackTrace();
}
}
/**
* Function:
* 初始化人脸比对临时库,只用创建一次
* @DateTime 2017年12月6日下午1:34:55
*/
public static void initTempFaceSet() {
String displayName = "人脸比对临时库";
String outerId = "tempFace";
String tags ="tempFace";
String FaceTokens = "705d1c857ca50a028355bc138198a018";//72小时内有效
String userData = "";
int ForceMerge = 0;
FaceSetOperate faceSetOperate = new FaceSetOperate(apiKey, apiSecret, false);
try {
Response response = faceSetOperate.createFaceSet(displayName, outerId, tags, FaceTokens, userData, ForceMerge);
String result = new String(response.getContent(),"UTF-8");
System.out.println(response.getStatus());
System.out.println(result);
} catch (Exception e) {
e.printStackTrace();
}
}
public static void main(String[] args) {
//List faceTokens = getFaceToken(hezhao);
//String FaceTokens = "e4647d61eaa4b44b0f28521f17320d83";
//searchByFaceSetToken(FaceTokens);
//initTempFaceSet();
//addFace2Set("37a4b7f212e78171a2939321ffba5817", TempFaceSetToken);
//removeFaceFromSet(FaceTokens, TempFaceSetToken);
//removeAllFaceFromSet(FaceSetToken);
}
}