java调用海康威视人脸识别抓拍
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2023-12-22 16:49:28
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**1.**首先下载官网的sdk开发包，引入HCNetSDK.java，里面定义了很多调用的能力集。
**2.**通过报警回调函数中的黑名单报警这个接口去实现人脸抓拍的。
3.简单来说就是写个类去实现HCNetSDK.FMSGCallBack 然后根据条件函数 case HCNetSDK.COMM_SNAP_MATCH_ALARM。
4进行类的初始化操作、账号和密码的设定，IP地址的绑定。
**5.**下载好了之后创建maven项目.
按照SDK里面的文档要求把下图文件夹和文件引入（在SDK库文件夹里），7个dll文件和一个KCNetSDK文件夹（我这里创建了一个HCNetSDK的文件夹装下这些）
6. 接下来把他的接口类引入 如下在这里插入图片描述
打开接口类 看33行 这里有个引入dll文件的代码，我这里是用的文件引入工具类(这个类后面有给出)，你们自己换成目录。resources\HCNetSDK\HCNetSDK的绝对路径！！！！其实这里引入的就是我们引入的7个dll文件中的HCNetSDK.dll这个文件，这里绝对路径引入的时候不要.dll后缀名。
文件也引入了 接下来就是我们自己创建java类去调用它的接口类了，创建两个类 一个是报警回调函数的实现类（用来实现调用海康人脸比对），一个是主类 里面包含 初始化海康接口类、调用第一个函数实现人脸评分抓拍等等。
附上核心代码！
package HikSnap;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException;
import java.nio.ByteBuffer;
import java.util.Date;
import java.text.SimpleDateFormat;
import com.sun.jna.NativeLong;
import com.sun.jna.Pointer;
/**
*@author fengwenyong
* 实时进行人脸抓拍保存远近图片
*/
class FMSGCallBack_V31 implements HCNetSDK.FMSGCallBack_V31
{
//实时人脸抓拍上传
public boolean invoke(NativeLong lCommand, HCNetSDK.NET_DVR_ALARMER pAlarmer, Pointer pAlarmInfo, int dwBufLen, Pointer pUser)
{
AlarmDataHandle(lCommand, pAlarmer, pAlarmInfo, dwBufLen, pUser);
return true;
}
public void AlarmDataHandle(NativeLong lCommand, HCNetSDK.NET_DVR_ALARMER pAlarmer, Pointer pAlarmInfo, int dwBufLen, Pointer pUser)
{
switch (lCommand.intValue()){
case HCNetSDK.COMM_UPLOAD_FACESNAP_RESULT: //实时人脸抓拍上传
System.out.println("低于设定拍照阈值，请重新识别");
HCNetSDK.NET_VCA_FACESNAP_RESULT strFaceSnapInfo = new HCNetSDK.NET_VCA_FACESNAP_RESULT();
strFaceSnapInfo.write();
Pointer pFaceSnapInfo = strFaceSnapInfo.getPointer();
pFaceSnapInfo.write(0, pAlarmInfo.getByteArray(0, strFaceSnapInfo.size()), 0, strFaceSnapInfo.size());
strFaceSnapInfo.read();
if(strFaceSnapInfo.dwFaceScore>80) {
SimpleDateFormat df = new SimpleDateFormat ("yyyyMMddHHmmss");//设置日期格式
String time = df.format (new Date ( ));// new Date()为获取当前系统时间
System.out.println("face score is " + strFaceSnapInfo.dwFaceScore+" point");
try {
//设置图片保存路径
FileOutputStream small = new FileOutputStream ("D:\\Picture\\" + time + "small.jpg");
FileOutputStream big = new FileOutputStream ("D:\\Picture\\" + time + "big.jpg");
try {
small.write (strFaceSnapInfo.pBuffer1.getByteArray (0, strFaceSnapInfo.dwFacePicLen), 0, strFaceSnapInfo.dwFacePicLen);
small.close ( );
} catch (IOException ex) {
ex.printStackTrace ( );
}
try {
big.write (strFaceSnapInfo.pBuffer2.getByteArray (0, strFaceSnapInfo.dwBackgroundPicLen), 0, strFaceSnapInfo.dwBackgroundPicLen);
big.close ( );
} catch (IOException ex) {
ex.printStackTrace ( );
}
} catch (FileNotFoundException ex) {
ex.printStackTrace ( );
}
}
break;
case HCNetSDK.COMM_SNAP_MATCH_ALARM:
//人脸黑名单比对报警
System.out.println("SNAP_MATCH_ALARM");
HCNetSDK.NET_VCA_FACESNAP_MATCH_ALARM strFaceSnapMatch = new HCNetSDK.NET_VCA_FACESNAP_MATCH_ALARM();
strFaceSnapMatch.write();
Pointer pFaceSnapMatch = strFaceSnapMatch.getPointer();
pFaceSnapMatch.write(0, pAlarmInfo.getByteArray(0, strFaceSnapMatch.size()), 0, strFaceSnapMatch.size());
strFaceSnapMatch.read();
if ((strFaceSnapMatch.dwSnapPicLen > 80) && (strFaceSnapMatch.byPicTransType == 80)) {
SimpleDateFormat sf = new SimpleDateFormat("yyyyMMddHHmmss");
String newName = sf.format(new Date());
FileOutputStream fout;
try {
String filename = "D:\\Picture\\" + newName + "_pSnapPicBuffer" + ".jpg";
fout = new FileOutputStream(filename);
//将字节写入文件
long offset = 0;
ByteBuffer buffers = strFaceSnapMatch.pSnapPicBuffer.getByteBuffer(offset, strFaceSnapMatch.dwSnapPicLen);
byte[] bytes = new byte[strFaceSnapMatch.dwSnapPicLen];
buffers.rewind();
buffers.get(bytes);
fout.write(bytes);
fout.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if ((strFaceSnapMatch.struSnapInfo.dwSnapFacePicLen >80) && (strFaceSnapMatch.byPicTransType == 80)) {
SimpleDateFormat sf = new SimpleDateFormat("yyyyMMddHHmmss");
String newName = sf.format(new Date());
FileOutputStream fout;
try {
String filename = "D:\\Picture\\" + newName + "_struSnapInfo_pBuffer1" + ".jpg";
fout = new FileOutputStream(filename);
//?????д?????
long offset = 0;
ByteBuffer buffers = strFaceSnapMatch.struSnapInfo.pBuffer1.getByteBuffer(offset, strFaceSnapMatch.struSnapInfo.dwSnapFacePicLen);
byte[] bytes = new byte[strFaceSnapMatch.struSnapInfo.dwSnapFacePicLen];
buffers.rewind();
buffers.get(bytes);
fout.write(bytes);
fout.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
if ((strFaceSnapMatch.struBlackListInfo.dwBlackListPicLen > 80) && (strFaceSnapMatch.byPicTransType == 80)) {
SimpleDateFormat sf = new SimpleDateFormat("yyyyMMddHHmmss");
String newName = sf.format(new Date());
FileOutputStream fout;
try {
String filename = "D:\\Picture\\" + newName + "_fSimilarity_" + strFaceSnapMatch.fSimilarity + "_struBlackListInfo_pBuffer1" + ".jpg";
fout = new FileOutputStream(filename);
//?????д?????
long offset = 0;
ByteBuffer buffers = strFaceSnapMatch.struBlackListInfo.pBuffer1.getByteBuffer(offset, strFaceSnapMatch.struBlackListInfo.dwBlackListPicLen);
byte[] bytes = new byte[strFaceSnapMatch.struBlackListInfo.dwBlackListPicLen];
buffers.rewind();
buffers.get(bytes);
fout.write(bytes);
fout.close();
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
break;
}
}
}
public class Snap {
static HCNetSDK hCNetSDK = HCNetSDK.INSTANCE;
static NativeLong lUserID = new NativeLong(-1);//用户句柄
static NativeLong lAlarmHandle = new NativeLong(-1);//报警布防句柄
FMSGCallBack_V31 fMSFCallBack_V31 = null;
/**
* @param args
*/
public static void main(String[] args) {
Snap test = new Snap();
hCNetSDK.NET_DVR_Init();
test.Login();
test.SetAlarm();
while(true);
}
public void Login()
{
HCNetSDK.NET_DVR_DEVICEINFO_V30 m_strDeviceInfo = new HCNetSDK.NET_DVR_DEVICEINFO_V30();
lUserID = hCNetSDK.NET_DVR_Login_V30("10.118.230.27",
(short) 8000, "admin", "zhly2019app", m_strDeviceInfo);
if (lUserID.longValue() == -1)
{
System.out.println("login fail，error code "+hCNetSDK.NET_DVR_GetLastError());
}
else
{
System.out.println("login successful！");
}
}
public void SetAlarm(){
if (lAlarmHandle.intValue() < 0)//尚未布防,需要布防
{
if (fMSFCallBack_V31 == null)
{
fMSFCallBack_V31 = new FMSGCallBack_V31();
Pointer pUser = null;
if (!hCNetSDK.NET_DVR_SetDVRMessageCallBack_V31(fMSFCallBack_V31, pUser))
{
System.out.println("Set callback function fail");
}
else{
System.out.println("Set callback function successfully!");
}
}
HCNetSDK.NET_DVR_SETUPALARM_PARAM m_strAlarmInfo = new HCNetSDK.NET_DVR_SETUPALARM_PARAM();
m_strAlarmInfo.dwSize=m_strAlarmInfo.size();
m_strAlarmInfo.byLevel=1;
m_strAlarmInfo.byAlarmInfoType=1;
m_strAlarmInfo.byDeployType =1;
m_strAlarmInfo.write();
lAlarmHandle = hCNetSDK.NET_DVR_SetupAlarmChan_V41(lUserID, m_strAlarmInfo);
if (lAlarmHandle.intValue() == -1)
{
System.out.println("deployment fail");
}
else
{
System.out.println("deployment Successful");
}
}
}
}
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