原理比较简单：1.利用au3抓取摄像头并拍照，存储在本地。2.利用au3的post功能将本地照片以base64编码方式上传php服务器。3.php端根据接收到的图片编码，调用百度AI开放平台进行人脸识别。
一些准备工作：
1.1需要自行搭建本地php服务器（假设ip地址为192.168.1.30），可以网上下载phpstudy进行一键安装
1.2下载百度AI人脸识别php包（https://ai.baidu.com/sdk#bfr）
1.3将php包放入新建的aiface文件夹内，将index_au3.php文件放入aiface文件夹
1.4将aiface文件夹放入PHP服务器的web根目录
2.1需要申请注册百度开发者账号（https://login.bce.baidu.com）
2.2选择人脸识别–应用列表–创建应用–（获得AppID API Key Secret Key）
2.3创建后选择该应用进入后–新建用户组：free_face ,本例的用户组名为free_face
2.4修改index_au3.php文件内的AppID API Key Secret Key配置信息
[code]const APP_ID = ‘15462718’;//你的 App ID
const API_KEY = ‘W7Pr4cjQdYLRzsEntHeBFXF4’;//你的 Api Key
const SECRET_KEY = ‘GLh84ZjMczUtaeoDEvS93dpDzSQQzxrp’;//你的 Secret Key[/code]
camera.au3
$WM_CAP_START = 0x400
$WM_CAP_UNICODE_START = $WM_CAP_START +100
$WM_CAP_PAL_SAVEA = $WM_CAP_START + 81
$WM_CAP_PAL_SAVEW = $WM_CAP_UNICODE_START + 81
$WM_CAP_UNICODE_END = $WM_CAP_PAL_SAVEW
$WM_CAP_ABORT = $WM_CAP_START + 69
$WM_CAP_DLG_VIDEOCOMPRESSION = $WM_CAP_START + 46
$WM_CAP_DLG_VIDEODISPLAY = $WM_CAP_START + 43
$WM_CAP_DLG_VIDEOFORMAT = $WM_CAP_START + 41
$WM_CAP_DLG_VIDEOSOURCE = $WM_CAP_START + 42
$WM_CAP_DRIVER_CONNECT = $WM_CAP_START + 10
$WM_CAP_DRIVER_DISCONNECT = $WM_CAP_START + 11
$WM_CAP_DRIVER_GET_CAPS = $WM_CAP_START + 14
$WM_CAP_DRIVER_GET_NAMEA = $WM_CAP_START + 12
$WM_CAP_DRIVER_GET_NAMEW = $WM_CAP_UNICODE_START + 12
$WM_CAP_DRIVER_GET_VERSIONA = $WM_CAP_START + 13
$WM_CAP_DRIVER_GET_VERSIONW = $WM_CAP_UNICODE_START + 13
$WM_CAP_EDIT_COPY = $WM_CAP_START + 30
$WM_CAP_END = $WM_CAP_UNICODE_END
$WM_CAP_FILE_ALLOCATE = $WM_CAP_START + 22
$WM_CAP_FILE_GET_CAPTURE_FILEA = $WM_CAP_START + 21
$WM_CAP_FILE_GET_CAPTURE_FILEW = $WM_CAP_UNICODE_START + 21
$WM_CAP_FILE_SAVEASA = $WM_CAP_START + 23
$WM_CAP_FILE_SAVEASW = $WM_CAP_UNICODE_START + 23
$WM_CAP_FILE_SAVEDIBA = $WM_CAP_START + 25
$WM_CAP_FILE_SAVEDIBW = $WM_CAP_UNICODE_START + 25
$WM_CAP_FILE_SET_CAPTURE_FILEA = $WM_CAP_START + 20
$WM_CAP_FILE_SET_CAPTURE_FILEW = $WM_CAP_UNICODE_START + 20
$WM_CAP_FILE_SET_INFOCHUNK = $WM_CAP_START + 24
$WM_CAP_GET_AUDIOFORMAT = $WM_CAP_START + 36
$WM_CAP_GET_CAPSTREAMPTR = $WM_CAP_START + 1
$WM_CAP_GET_MCI_DEVICEA = $WM_CAP_START + 67
$WM_CAP_GET_MCI_DEVICEW = $WM_CAP_UNICODE_START + 67
$WM_CAP_GET_SEQUENCE_SETUP = $WM_CAP_START + 65
$WM_CAP_GET_STATUS = $WM_CAP_START + 54
$WM_CAP_GET_USER_DATA = $WM_CAP_START + 8
$WM_CAP_GET_VIDEOFORMAT = $WM_CAP_START + 44
$WM_CAP_GRAB_FRAME = $WM_CAP_START + 60
$WM_CAP_GRAB_FRAME_NOSTOP = $WM_CAP_START + 61
$WM_CAP_PAL_AUTOCREATE = $WM_CAP_START + 83
$WM_CAP_PAL_MANUALCREATE = $WM_CAP_START + 84
$WM_CAP_PAL_OPENA = $WM_CAP_START + 80
$WM_CAP_PAL_OPENW = $WM_CAP_UNICODE_START + 80
$WM_CAP_PAL_PASTE = $WM_CAP_START + 82
$WM_CAP_SEQUENCE = $WM_CAP_START + 62
$WM_CAP_SEQUENCE_NOFILE = $WM_CAP_START + 63
$WM_CAP_SET_AUDIOFORMAT = $WM_CAP_START + 35
$WM_CAP_SET_CALLBACK_CAPCONTROL = $WM_CAP_START + 85
$WM_CAP_SET_CALLBACK_ERRORA = $WM_CAP_START + 2
$WM_CAP_SET_CALLBACK_ERRORW = $WM_CAP_UNICODE_START + 2
$WM_CAP_SET_CALLBACK_FRAME = $WM_CAP_START + 5
$WM_CAP_SET_CALLBACK_STATUSA = $WM_CAP_START + 3
$WM_CAP_SET_CALLBACK_STATUSW = $WM_CAP_UNICODE_START + 3
$WM_CAP_SET_CALLBACK_VIDEOSTREAM = $WM_CAP_START + 6
$WM_CAP_SET_CALLBACK_WAVESTREAM = $WM_CAP_START + 7
$WM_CAP_SET_CALLBACK_YIELD = $WM_CAP_START + 4
$WM_CAP_SET_MCI_DEVICEA = $WM_CAP_START + 66
$WM_CAP_SET_MCI_DEVICEW = $WM_CAP_UNICODE_START + 66
$WM_CAP_SET_OVERLAY = $WM_CAP_START + 51
$WM_CAP_SET_PREVIEW = $WM_CAP_START + 50
$WM_CAP_SET_PREVIEWRATE = $WM_CAP_START + 52
$WM_CAP_SET_SCALE = $WM_CAP_START + 53
$WM_CAP_SET_SCROLL = $WM_CAP_START + 55
$WM_CAP_SET_SEQUENCE_SETUP = $WM_CAP_START + 64
$WM_CAP_SET_USER_DATA = $WM_CAP_START + 9
$WM_CAP_SET_VIDEOFORMAT = $WM_CAP_START + 45
$WM_CAP_SINGLE_FRAME = $WM_CAP_START + 72
$WM_CAP_SINGLE_FRAME_CLOSE = $WM_CAP_START + 71
$WM_CAP_SINGLE_FRAME_OPEN = $WM_CAP_START + 70
$WM_CAP_STOP = $WM_CAP_START + 68
<h1>include <GUIConstants.au3></h1>
<h1>include <WindowsConstants.au3></h1>
<h1>include <MsgBoxConstants.au3></h1>
$avi = DllOpen("avicap32.dll")
$user = DllOpen("user32.dll")
$snapfile = @ScriptDir & "\scrshot.bmp"
$Main = GUICreate("Camera",450,270)
$take_photo = GUICtrlCreateButton("拍摄照片", 340, 42, 90, 50)
GUICtrlSetFont($take_photo, 11, "", "", "") ;font size
$close_photo = GUICtrlCreateButton("关闭", 340, 100, 90, 50)
GUICtrlSetFont($take_photo, 11, "", "", "") ;font size
$cap = DllCall($avi, "int", "capCreateCaptureWindow", "str", "cap", "int", BitOR($WS_CHILD,$WS_VISIBLE), "int", 15, "int", 15, "int", 320, "int", 240, "hwnd", $Main, "int", 1)
DllCall($user, "int", "SendMessage", "hWnd", $cap[0], "int", $WM_CAP_DRIVER_CONNECT, "int", 0, "int", 0)
DllCall($user, "int", "SendMessage", "hWnd", $cap[0], "int", $WM_CAP_SET_SCALE, "int", 1, "int", 0)
DllCall($user, "int", "SendMessage", "hWnd", $cap[0], "int", $WM_CAP_SET_OVERLAY, "int", 1, "int", 0)
DllCall($user, "int", "SendMessage", "hWnd", $cap[0], "int", $WM_CAP_SET_PREVIEW, "int", 1, "int", 0)
DllCall($user, "int", "SendMessage", "hWnd", $cap[0], "int", $WM_CAP_SET_PREVIEWRATE, "int", 1, "int", 0)
GUISetState(@SW_SHOW)
HotKeySet("{INSERT}", "SnapShot"); 按Insert键截图
While 1
$msg = GUIGetMsg()
If $msg = $GUI_EVENT_CLOSE Then
;DllCall($user, "int", "SendMessage", "hWnd", $cap[0], "int", $WM_CAP_SET_CALLBACK_FRAME, "int", 0, "int", 0)
DllCall($user, "int", "SendMessage", "hWnd", $cap[0], "int", $WM_CAP_END, "int", 0, "int", 0)
DllCall($user, "int", "SendMessage", "hWnd", $cap[0], "int", $WM_CAP_DRIVER_DISCONNECT, "int", 0, "int", 0)
;DllClose($avi)
DllClose($user)
Exit
EndIf
<pre><code> Select
Case $msg = $take_photo
SnapShot()
If FileExists($snapfile) Then</code></pre>
;FileDelete("c:\a.txt")
;MsgBox(0, "成功", "截图成功！")
;==================base64编码
$objStream = ObjCreate("ADODB.Stream")
$objStream.Type = 1
$objStream.Open
$objStream.LoadFromFile($snapfile)
$objXMLDoc = ObjCreate("Msxml2.DOMDocument")
$objDocElem = $objXMLDoc.CreateElement("base64")
$objDocElem.dataType = "bin.base64"
$objDocElem.nodeTypedValue = $objStream.Read
$sBase64String = $objDocElem.text
$objStream.Close
;$fRead ='data:image/bmp;base64,'&$sBase64String
$fRead =$sBase64String
;============以下是发送post数据，并检测登录是否成功================
;$LoginPage = 'http://192.168.1.30/aiface/index.php'
$PostPage = 'http://192.168.1.30/aiface/index_au3.php'
Global $xmlhttp, $sValue
$xmlhttp = ObjCreate("MSXML2.XMLHTTP.3.0")
;$xmlhttp.open("GET", $LoginPage, False)
;$xmlhttp.send()
;$sValue = BinaryToString($xmlhttp.responseBody, 4)
;$Formhash = StringRegExp($sValue, 'name="formhash" value="(.*?)\"', 3)
If @error = 0 Then
$xmlhttp.open("POST", $PostPage, False)
$xmlhttp.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded')
;$xmlhttp.send('loginfield=username&username=' & $UserName & '&password=' & $password & '&questionid=0&answer=')
; $xmlhttp.send('file=' & $fRead )
$xmlhttp.send('file=' & $fRead )
$sValue = BinaryToString($xmlhttp.responseBody, 4)
; If StringInStr($sValue, '1') Then
MsgBox(0, "", $sValue)
; Else
; MsgBox(0, "", "登录失败！")
; EndIf
EndIf
$xmlhttp.abort()
Else
EndIf
<pre><code> EndSelect
Sleep(1)</code></pre>
Wend
Func SnapShot()
DllCall($user, "int", "SendMessage", "hWnd", $cap[0], "int", $WM_CAP_GRAB_FRAME_NOSTOP, "int", 0, "int", 0)
DllCall($user, "int", "SendMessage", "hWnd", $cap[0], "int", $WM_CAP_FILE_SAVEDIBA, "int", 0, "str", $snapfile)
EndFunc
index_au3.php
<?php
//index_au3.php
header("Content-type:text/html;charset=utf-8");
const APP_ID = '15452718';//你的 App ID
const API_KEY = 'W7Pr4cjQdYLRzsEntHeBFXF4';//你的 Api Key
const SECRET_KEY = 'GLh84ZjMczUtaeoDEvS93dpDzSQQzxrp';//你的 Secret Key
if(isset($_POST['file'])){
// echo $_POST['file'];
echo aiface_reg($_POST['file']);
}
?>
<?php
function aiface_reg($img_base64,$imageType='BASE64',$groupId='free_face',$score='85'){// 根据图片地址 及相似度评分，返回该图片在 用户组的 userid
require('AipFace.php');
// 你的 APPID AK SK https://ai.baidu.com/docs#/Face-PHP-SDK/top
$client = new AipFace(APP_ID, API_KEY, SECRET_KEY);
$img_dir='';//这里不用进行转码
//第一步，对图片进行编码
/*
$base64_image = '';
$image_info = getimagesize($img_dir);
$image_data = fread(fopen($img_dir, 'r'), filesize($img_dir));
$base64_image = chunk_split(base64_encode($image_data));
$image = preg_replace('/\r|\n/', '', $base64_image);// 一定要用正则式把换行去掉，百度不支持换行 此处是base64编码的字符串
*/
$image=$img_base64;//直接赋值base64编码
//第二步，检测图片是否是人脸
// [1]调用人脸检测
//$client->detect(base64EncodeImage($image), $imageType);
// [2]如果有可选参数
$options = array();
$options["face_field"] = "age";
$options["max_face_num"] = 1;
$options["face_type"] = "LIVE";
// 带参数调用人脸检测
$res = $client->detect($image, $imageType, $options);
// Array ( [error_code] => 0 [error_msg] => SUCCESS [log_id] => 3.045692791634E+17 [timestamp] => 1547916339 [cached] => 0 [result] => Array ( [face_num] => 1 [face_list] => Array ( [0] => Array ( [face_token] => 34f3873bbe3548e80c73d8bcdd0f6055 [location] => Array ( [left] => 155.68 [top] => 157.22 [width] => 193 [height] => 183 [rotation] => 0 ) [face_probability] => 1 [angle] => Array ( [yaw] => -8.48 [pitch] => 4.46 [roll] => -0.22 ) [age] => 26 ) ) ) )
//$dat=json_decode($res,true);
/*
$dat =$res;
echo $dat['error_msg'];
echo '<br>';
echo $dat['result']['face_list'][0]['face_probability'];//人脸置信度，范围【0~1】，代表这是一张人脸的概率，0最小、1最大。
echo '<br>';
echo $dat['result']['face_list'][0]['face_token'];
echo '<br>';
echo $dat['result']['face_list'][0]['age'];
echo '<br>---------------<br>';*/
//马化腾的 face_token=34f3873bbe3548e80c73d8bcdd0f6055
// 马化腾1的 face_token=77d98a34dccd5a9734ee50c24e72fea5
if($res['error_msg']<>'SUCCESS'){
$result=array(
'code' => 0,
'msg' => 'no face 未检测到人脸',
'data' => 'error'
);
echo json_encode($result);
die;
}
//第三步， 判断人脸库是否存在该人，不存在则创建
//人脸库
//$imageType = "BASE64";
$groupIdList =$groupId;// 只用一个组
// 调用人脸搜索
$res2=$client->search($image, $imageType, $groupIdList);
/*
// 如果有可选参数
$options = array();
$options["quality_control"] = "NONE";//图片质量控制 NONE: 不进行控制 LOW:较低的质量要求 NORMAL: 一般的质量要求 HIGH: 较高的质量要求 默认 NONE
$options["liveness_control"] = "NONE";//活体检测控制 NONE: 不进行控制 LOW:较低的活体要求(高通过率 低攻击拒绝率) NORMAL: 一般的活体要求(平衡的攻击拒绝率, 通过率) HIGH: 较高的活体要求(高攻击拒绝率 低通过率) 默认NONE
$options["user_id"] = "233451";//当需要对特定用户进行比对时，指定user_id进行比对。即人脸认证功能。
$options["max_user_num"] = 3;//查找后返回的用户数量。返回相似度最高的几个用户，默认为1，最多返回20个。
// 带参数调用人脸搜索
$client->search($image, $imageType, $groupIdList, $options);
*/
//var_dump($res2);
//array(6) { ["error_code"]=> int(222207) ["error_msg"]=> string(23) "match user is not found" ["log_id"]=> float(3.0459287972622E+17) ["timestamp"]=> int(1547972622) ["cached"]=> int(0) ["result"]=> NULL }
//array(6) { ["error_code"]=> int(0) ["error_msg"]=> string(7) "SUCCESS" ["log_id"]=> float(3.0548687972859E+17) ["timestamp"]=> int(1547972859) ["cached"]=> int(0) ["result"]=> array(2) { ["face_token"]=> string(32) "34f3873bbe3548e80c73d8bcdd0f6055" ["user_list"]=> array(1) { [0]=> array(4) { ["group_id"]=> string(9) "free_face" ["user_id"]=> string(15) "201901201624_ma" ["user_info"]=> string(0) "" ["score"]=> int(100) } } } }
/*echo $res2['error_msg'];
echo '<br>';
echo $res2['result']['face_token'];
echo '<br>';
echo $res2['result']['user_list'][0]['group_id'];
echo '<br>';
echo $res2['result']['user_list'][0]['user_id'];
echo '<br>';
echo '得分：'.$res2['result']['user_list'][0]['score'];// 只要图库存在图片都会返回成功，利用得分判断是否同一人
*/
$score=$res2['result']['user_list'][0]['score'];
if($res2['error_msg']=='SUCCESS' && $res2['result']['user_list'][0]['score']>88){
$result=array(
'code' => 1,
'msg' => 'face exists 人脸库已存在',
'data' => $res2['result']['user_list'][0]['user_id'],
'score' => $score
);
echo json_encode($result);
die;
//die('匹配到人脸数据库,任务结束');
}
//第四步，执行新增
//$image = "取决于image_type参数，传入BASE64字符串或URL字符串或FACE_TOKEN字符串";
$userId = date("YmdHis").'_la';
//echo '<br>'.$userId.'<br>';
// 调用人脸注册
$res3=$client->addUser($image, $imageType, $groupId, $userId);
/*
// 如果有可选参数
$options = array();
$options["user_info"] = "user's info";
$options["quality_control"] = "NORMAL";
$options["liveness_control"] = "LOW";
// 带参数调用人脸注册
$client->addUser($image, $imageType, $groupId, $userId, $options);
*/
//var_dump($res3);
//array(6) { ["error_code"]=> int(222018) ["error_msg"]=> string(27) "param[user_id] format error" ["log_id"]=> float(3.0459287975839E+17) ["timestamp"]=> int(1547975838) ["cached"]=> int(0) ["result"]=> NULL }
//array(6) { ["error_code"]=> int(0) ["error_msg"]=> string(7) "SUCCESS" ["log_id"]=> float(3.0456927976109E+17) ["timestamp"]=> int(1547976108) ["cached"]=> int(0) ["result"]=> array(2) { ["face_token"]=> string(32) "d364574400ab59b7f13d87941d6b90e6" ["location"]=> array(5) { ["left"]=> float(222.6) ["top"]=> float(121.96) ["width"]=> int(137) ["height"]=> int(112) ["rotation"]=> int(-2) } } }
/*
echo $res3['error_msg'];
echo '<br>';
echo $res3['result']['face_token'];
echo '<br>';
*/
if($res3['error_msg']=='SUCCESS'){
$result=array(
'code' => 2,
'msg' => 'register successed 已添加到人脸库',
'data' => $userId,
'score' => $score
);
echo json_encode($result);
}else{
$result=array(
'code' => 3,
'msg' => 'register failed 添加人脸库失败',
'data' => 'error'
);
echo json_encode($result);
}
}//函数结束
?>
index_au3.php 返回的是json信息（json里面的score是招牌与人脸库里对比最接近的得分，分数越高越表名是同一个人！分数太低可能导致不同的人被识别成同一个人，我用的是88分以上为同一人）
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本文链接：https://ranjuan.cn/au3抓取摄像头post上传百度ai进行人脸识别/
