1.注冊百度開發者賬號。
https://login.bce.baidu.com/?account= 注冊登錄成功后,進入控制臺,在左邊的導航欄找到產品-》人工智能-》人臉識別:
創建應用。創建應用成功后拿到應用的API Key和Secret Key
2.接口調用-獲取access token
調用人臉識別接口前需要獲取access token,示例代碼:
function execCurl($url, $param) { if (empty($url) || empty($param)) { return array('result' => false, 'err_msg' => 'url or param is null'); } $curl = curl_init();//初始化curl curl_setopt($curl, CURLOPT_URL, $url);//抓取指定網頁 curl_setopt($curl, CURLOPT_HEADER, 0);//設置header curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);//要求結果為字符串且輸出到屏幕上 curl_setopt($curl, CURLOPT_POST, 1);//post提交方式 curl_setopt($curl, CURLOPT_POSTFIELDS, $param); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0); $data = curl_exec($curl);//運行curl $curl_err_msg = curl_error($curl); curl_close($curl); if($data === false) { return array('result' => false, 'err_msg' => $curl_err_msg); }else { return array('result' => true, 'data' => $data); } } $url = 'https://aip.baidubce.com/oauth/2.0/token'; $param = array( 'grant_type' => 'client_credentials', 'client_id' => '你的API Key', 'client_secret' => '你的Secret Key' ); $result = execCurl($url, $param); 3.調用人臉檢查接口 如果需要判斷一張圖片中的人臉,是否符合后續識別或者對比的條件,在請求時在face_field參數中請求quality。 下面示例是請求圖文為base64轉碼字符串(轉碼不能包含頭信息),也可以傳圖片網絡地址,官方文檔:https://ai.baidu.com/docs#/Face-Detect-V3/top 示例代碼: function checkPictureToCheckFace($image_path, $access_token) { $url = 'https://aip.baidubce.com/rest/2.0/face/v3/detect?access_token=' . $access_token; $param = array( 'image' => base64EncodeImage($image_path), 'image_type' => 'BASE64', 'face_field' => 'quality' ); $param = json_encode($param); $result = execCurl($url, $param); if($result['result'] == false) return $result; $data = json_decode($result['data'], true); if($data['error_code'] != 0) return array('result' => false, 'err_msg' => '上傳的人臉不符合要求,請重新上傳五官清晰的真實頭像'); $err_result = array('result' => false, 'err_msg' => '上傳的人臉不符合要求,請重新上傳五官清晰的真實頭像!'); $quality = $data['result']['face_list'][0]['quality']; if($quality['occlusion']['left_eye'] > 0.6) return $err_result; // 左眼被遮擋的閾值 if($quality['occlusion']['right_eye'] > 0.6) return $err_result; // 右眼被遮擋的閾值 if($quality['occlusion']['nose'] > 0.7) return $err_result; // 鼻子被遮擋的閾值 if($quality['occlusion']['mouth'] > 0.7) return $err_result; // 嘴巴被遮擋的閾值 if($quality['occlusion']['left_cheek'] > 0.8) return $err_result; // 左臉頰被遮擋的閾值 if($quality['occlusion']['right_cheek'] > 0.8) return $err_result; // 右臉頰被遮擋的閾值 if($quality['occlusion']['chin_contour'] > 0.6) return $err_result; // 下巴被遮擋閾值 if($quality['blur'] != 0 && $quality['blur'] > 0.7) return $err_result; // 模糊度范圍 0是最清晰,1是最模糊 if($quality['illumination'] < 40) return $err_result; // 光照范圍 if($quality['completeness'] == 0) return $err_result; // 人臉完整度 0為人臉溢出圖像邊界,1為人臉都在圖像邊界內 return array('result' => true); } function execCurl($url, $param) { if (empty($url) || empty($param)) { return array('result' => false, 'err_msg' => 'url or param is null'); } $curl = curl_init();//初始化curl curl_setopt($curl, CURLOPT_URL, $url);//抓取指定網頁 curl_setopt($curl, CURLOPT_HEADER, 0);//設置header curl_setopt($curl, CURLOPT_RETURNTRANSFER, 1);//要求結果為字符串且輸出到屏幕上 curl_setopt($curl, CURLOPT_POST, 1);//post提交方式 curl_setopt($curl, CURLOPT_POSTFIELDS, $param); curl_setopt($curl, CURLOPT_SSL_VERIFYPEER, 0); curl_setopt($curl, CURLOPT_SSL_VERIFYHOST, 0); $data = curl_exec($curl);//運行curl $curl_err_msg = curl_error($curl); curl_close($curl); if($data === false) { return array('result' => false, 'err_msg' => $curl_err_msg); }else { return array('result' => true, 'data' => $data); } } function base64EncodeImage($image_path) { $base64_image = ''; $image_info = getimagesize($image_path); $image_data = fread(fopen($image_path, 'r'), filesize($image_path)); $base64_image = chunk_split(base64_encode($image_data)); return $base64_image; } $image_path = 'image/1.jpg'; $access_token = '上一步的獲取access token'; $result = checkPictureToCheckFace($image_path, $access_token);
判斷是否符合人臉識別檢查的字段說明:
注明:此文章轉至公眾號php開源社區