Linux 基于C语言 调用OCR算法实现人脸识别或者车牌识别

通过识别照片判断是否为同一人

• 1.借助工具
• • 1.注册登录
  • 2.选择人脸识别
  • 3.1毛钱购买
• 2.代码测试

1.借助工具

面部识别靠自己是很做成的，故我们借助一些工具，我们利用翔云智能平台，百度搜索翔云（因为翔云便宜一些。。。）

1.注册登录

进入后，上方选项栏选择价格与购买

2.选择人脸识别

右侧选择人脸识别，以后若有其他需要亦可使用其他

3.1毛钱购买

第一次1毛钱（便宜吧。。。）加入购物车，右侧购车内进行购买

完成后，再次选择上方选项栏的产品，选择人脸识别

可以先选择本地上传试一下

2.代码测试

接下来进入正题
根据网页下方的API文档
在Linux系统下编写程序
记得先在文件夹下放两张图片，函数详细使用见
libcurl

#include <stdio.h>
#include <curl/curl.h>
#include<string.h>
#include<stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>


#define true 1
#define false 0
typedef unsigned int bool;

char Buf[12000];
size_t readData( void *ptr, size_t size, size_t nmemb, void *stream)
{
	strncpy(Buf,ptr,1024);
	printf("============================get data============================");
	printf("%s\n",Buf);
}

//将图片转换为base64格式
char *readBase64(char *filePath)
{
	char *bufPic;
	char cmd[128];
	memset(cmd,'\0',128);
	sprintf(cmd,"base64 %s > tmpFile",filePath);
	system(cmd);

	int fd = open("./tmpFile",O_RDWR);
	int filelen = lseek(fd,0,SEEK_END);
	lseek(fd,0,SEEK_SET);
	bufPic = (char *)malloc(filelen+2);
	bufPic = memset(bufPic,'\0',filelen+2);
	read(fd,bufPic,filelen);
	system("rm -f tmpFile");
	close(fd);

	return bufPic;
}

bool postUrl()
{
	CURL *curl;
	CURLcode res;
	char *pointData;

	char *key = "UbkpH8e8ydNsj6uhxxxxxxx";
	char *secret = "1026b30b3cb7468e9d301afxxxxxxxx";
	int typeId = 21;
	char *format = "xml";


	char *bufPic1;
	char *bufPic2;
	bufPic1 = readBase64("./a.jpg");
	bufPic2 = readBase64("./b.jpg");


	int len = strlen(key)+strlen(secret)+strlen(bufPic1)+strlen(bufPic2)+128;
	pointData = (char *)malloc(len);
	memset(pointData,'\0',len);

	sprintf(pointData,"&img1=%s&img2=%s&key=%s&secret=%s&typeId=%d&format=%s",bufPic1,bufPic2,key,secret,21,format);
	//printf("%s\n",pointData);

//	int fp =open("./test.txt",O_RDWR|O_CREAT,0666);
	curl = curl_easy_init();
	if (curl)
	{
		curl_easy_setopt(curl,CURLOPT_POSTFIELDS,pointData);
		curl_easy_setopt(curl,CURLOPT_URL,"https://netocr.com/api/faceliu.do");
		curl_easy_setopt(curl,CURLOPT_WRITEFUNCTION,readData);
		res = curl_easy_perform(curl);
		printf("OK:%d\n",res);
		if(strstr(Buf, "是") != NULL){
			printf("the person same\n");
		}
		else{
			printf("the person different\n");
		}
		curl_easy_cleanup(curl);
	}

	return true;
}
int main(void)
{
	postUrl();
}

运行结果：

如果发现无法实现，代码运行进入不了网址，可能是没有安装openssl库，请参考
安装openssl

车牌识别demo如下

#include <stdio.h>
#include <curl/curl.h>
#include<string.h>
#include<stdlib.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <unistd.h>


#define true 1
#define false 0
typedef unsigned int bool;

char Buf[12000];
size_t readData( void *ptr, size_t size, size_t nmemb, void *stream)
{
        strncpy(Buf,ptr,1024);
        printf("============================get data============================\n");
        printf("%s\n",Buf);
}

//将图片转换为base64格式
char *readBase64(char *filePath)
{
        char *bufPic;
        char cmd[128] = {'\0'};
        sprintf(cmd,"base64 %s > tmpFile",filePath);
        system(cmd);

        int fd = open("./tmpFile",O_RDWR);
        int filelen = lseek(fd,0,SEEK_END);
        lseek(fd,0,SEEK_SET);
        bufPic = (char *)malloc(filelen+2);
        memset(bufPic,'\0',filelen+2);
        read(fd,bufPic,filelen);
        system("rm -f tmpFile");
        close(fd);

        return bufPic;
}

bool postUrl()
{
        CURL *curl;
        CURLcode res;
        char *pointData;

        char *key = "HzoZTfZVTnjm7txxxxxxx";
        char *secret = "d00d423761f24fc49e5817xxxxxxxx";
        int typeId = 19;
        char *format = "xml";


        char *bufPic1;
        bufPic1 = readBase64("./car1.jpg");


        int len = strlen(key)+strlen(secret)+strlen(bufPic1)+128;
        pointData = (char *)malloc(len);
        memset(pointData,'\0',len);

        sprintf(pointData,"&img=%s&key=%s&secret=%s&typeId=%d&format=%s",bufPic1,key,secret,typeId,format);
        //printf("%s\n",pointData);

//      int fp =open("./test.txt",O_RDWR|O_CREAT,0666);
        curl = curl_easy_init();
        if (curl)
        {
                curl_easy_setopt(curl,CURLOPT_POSTFIELDS,pointData);
                curl_easy_setopt(curl,CURLOPT_URL,"https://netocr.com/api/recogliu.do");
                curl_easy_setopt(curl,CURLOPT_WRITEFUNCTION,readData);
                res = curl_easy_perform(curl);
                printf("OK:%d\n",res);
                curl_easy_cleanup(curl);
        }

        return true;
}
int main(void)
{
        postUrl();
}

结果如下