#include "faceAPI.h"
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#include <iostream>
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FaceAPI::FaceAPI()
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{
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//创建静态人脸识别句柄，同时创建状态标量
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cv_result_t cv_result = 0;
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//FaceDB* f_db = FaceDB.GetInstance();
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fdb=new FaceDB();
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}
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FaceAPI::~FaceAPI()
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{
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}
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int FaceAPI::do_init(char* db_path)
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{
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return fdb->init(db_path);
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}
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//@brief 搜索功能
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//@param 图片
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//@return 人脸id
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int FaceAPI::do_reasch(cv::Mat image)
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{
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if (!image.data)
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{
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fprintf(stderr, "fail to read img\n");
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return -1;
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}
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else
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fprintf(stderr, "read img\n");
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p_f = fdb->extract_feature(image);
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fprintf(stderr, "fdb->extract_feature(image)\n");
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if (!p_f)
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{
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fprintf(stderr, "p_f is null\n");
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return -2;
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}
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return p_img_search(p_f);
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}
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//@brief 搜索功能
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//@param 字符串格式的特征值
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//@return 人脸id
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int FaceAPI::do_reasch(char* s_feature)
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{
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get_feature(s_feature,p_f);
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return p_img_search(p_f);
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}
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//@brief 注册功能
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//@param 图片
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//@return 人脸id
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int FaceAPI::do_register(cv::Mat image)
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{
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p_f = fdb->extract_feature(image);
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int indx = fdb->db_add(p_f);
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if(fdb->finally())
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return indx;
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return -2;
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}
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//@brief 在数据库中搜索人脸id
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//@param 特征值
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//@return 人脸id
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int FaceAPI::p_img_search(cv_feature_t *p_feature)
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{
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std::cout<<"p img search"<<std::endl;
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return fdb->search_db(p_feature);
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}
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//@brief 特征值转换为字符串
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//@param 特征值
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//@param 字符串格式的特征值
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//@return 状态量
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int FaceAPI::get_char(cv_feature_t *p_feature,char* feature_str)
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{
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return cv_verify_serialize_feature(p_feature,feature_str);
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}
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//@brief 字符串转换为特征值
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//@param 字符串格式的特征值
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//@param 特征值
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//@return 状态量
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int FaceAPI::get_feature(char *feature_str,cv_feature_t *p_feature)
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{
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p_feature = cv_verify_deserialize_feature(feature_str);
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if(p_feature != NULL)
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{
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return 0;
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}
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else
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return -1;
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}
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//faceDB实现部分
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//"./out1.db"
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//char *db_path = "out.db";
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FaceDB::FaceDB()
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{
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}
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FaceDB::~FaceDB() {}
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//初始化设置
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bool FaceDB::init(char* db_path_t)
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{
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db_path = db_path_t;
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//加载一次可多次使用。
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cv_verify_create_handle(&handle_verify, "../models/verify.model");
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fprintf(stderr, "create cv_verify_create_handle\n");
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cv_face_create_detector(&handle_detect, NULL, CV_DETECT_ENABLE_ALIGN_21);
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fprintf(stderr, "create cv_face_create_detector\n");
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// 创建人脸数据库句柄，在db_save()中，数据库保存成功，会释放该句柄
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cv_verify_create_db(&handle_db);
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fprintf(stderr, "create cv_verify_create_db\n");
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if(db_load())
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{
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fprintf(stderr, "db load\n");
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return true;
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}
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fprintf(stderr, "db load falied\n");
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return false;
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}
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//调用数据库保存
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bool FaceDB::finally()
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{
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if(db_save())
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{
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return true;
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}
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return false;
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}
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//@brief 数据库添加数据
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//@param 特征值
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//@return 人脸id，添加失败返回-1
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int FaceDB::db_add(cv_feature_t* p_feature)
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{
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int idx;
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cv_result_t cv_result = cv_verify_add_face(handle_db, p_feature, &idx);
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if (cv_result != CV_OK)
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{
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fprintf(stderr, "cv_verify_add_face failed, error code %d\n", cv_result);
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return -1;
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}
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cv_verify_release_feature(p_feature);
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return idx;
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}
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//@brief 保存数据库
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//@return 状态量
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bool FaceDB::db_save()
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{
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cv_result = cv_verify_save_db(handle_db, db_path);
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if (cv_result != CV_OK)
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{
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fprintf(stderr, "cv_verify_save_db failed, error code %d\n", cv_result);
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return false;
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}
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else
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{
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fprintf(stderr, "save done!\n");
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}
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cv_verify_destroy_db(handle_db);
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return true;
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}
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//@brief 加载数据库
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//@return 状态量
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bool FaceDB::db_load()
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{
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if (handle_db != NULL)
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{
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fprintf(stderr, "handle_db is not null!%s\n",db_path);
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}
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else
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{
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fprintf(stderr, "handle_db is null!%s\n",db_path);
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}
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cv_result = cv_verify_load_db(handle_db, db_path);
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if (cv_result != CV_OK)
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{
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fprintf(stderr, "cv_verify_load_db failed, error code %d\n", cv_result);
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return false;
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}
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else
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{
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fprintf(stderr, "load done!\n");
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}
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return true;
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}
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//@brief 搜索数据库
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//@param 人脸特征值
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//@return 人脸id
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int FaceDB::search_db(cv_feature_t *p_feature)
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{
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int indx=-1;
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//查询前10条
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int top_k = 3;
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int *top_idxs = new int[top_k];
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float *top_scores = new float[top_k];
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unsigned int result_length = 0;
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cv_result = cv_verify_search_face(handle_verify, handle_db,
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p_feature, top_k,
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top_idxs, top_scores, &result_length);
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if (cv_result == CV_OK)
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{
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//输出检查结果
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for (unsigned int t = 0; t < result_length; t++)
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{
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// const cv_feature_t item = result[t].item;
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fprintf(stderr, "%d\t", top_idxs[t]);
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fprintf(stderr, "%0.2f\n", top_scores[t]);
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}
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}
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else
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{
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fprintf(stderr, "cv_verify_search_face failed, error code %d\n", cv_result);
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}
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std::cout<<"this is hits"<<std::endl;
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if (top_scores[0] != 0)
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{
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indx=top_idxs[0];
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std::cout<<"indx="<<indx<<std::endl;
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}
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if (top_idxs)
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{
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delete[]top_idxs;
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}
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if (top_scores)
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{
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delete[]top_scores;
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}
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cv_verify_release_feature(p_feature);
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std::cout<<"return indx"<<std::endl;
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return indx;
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}
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//@brief 提取特征值
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//@param 图片
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//@return 特征值
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cv_feature_t* FaceDB::extract_feature(cv::Mat image_color)
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{
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if (handle_verify != NULL)
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{
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fprintf(stderr, "fdb.handle_verify is not null!\n");
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}
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else
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{
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fprintf(stderr, "fdb.handle_verify is null!\n");
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}
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//该变量内存会在db_add()中，添加成功后释放。
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cv_feature_t *p_feature = NULL;
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cv_face_t *p_face = NULL;
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int face_count = 0;
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cv_result_t st_result = CV_OK;
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fprintf(stderr, "cv_face_detect start!\n");
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if (handle_detect != NULL)
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{
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fprintf(stderr, "handle_detect is not null!\n");
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}
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else
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{
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fprintf(stderr, "handle_detect is null!\n");
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}
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st_result = cv_face_detect(handle_detect, image_color.data, CV_PIX_FMT_BGR888,
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image_color.cols, image_color.rows, image_color.step,
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CV_FACE_UP, &p_face, &face_count);
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fprintf(stderr, "cv_face_detect end!\n");
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if (face_count >= 1)
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{
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fprintf(stderr, "cv_verify_get_feature end!\n");
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st_result = cv_verify_get_feature(handle_verify,
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(unsigned char *)image_color.data, CV_PIX_FMT_BGR888,
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image_color.cols, image_color.rows, image_color.step,
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p_face, &p_feature, NULL);
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fprintf(stderr, "cv_verify_get_feature end!\n");
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if (st_result != CV_OK)
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{
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fprintf(stderr, "cv_verify_get_feature failed, error code %d\n", st_result);
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}
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}
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else
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{
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fprintf(stderr, "can't find face in ");
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}
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// release the memory of face
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cv_face_release_detector_result(p_face, face_count);
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return p_feature;
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}
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