利用PHP与七牛云存储接口实现图片的人脸识别和图像搜索的方法
引言:
随着互联网的快速发展,图像处理技术越来越成熟,人脸识别和图像搜索已经成为了我们日常生活中不可或缺的一部分。本文将介绍如何利用PHP编程语言和七牛云存储接口,实现对图片进行人脸识别和图像搜索的功能。同时,还将提供相应的代码示例。
一、准备工作:
1.申请七牛云存储账户,并获取Access Key和Secret Key;
2.安装并配置PHP环境。
二、人脸识别功能实现:
1.上传图片到七牛云存储:
require_once('qiniu/autoload.php'); use QiniuAuth; use QiniuStorageUploadManager; $accessKey = '<your-access-key>'; $secretKey = '<your-secret-key>'; $bucket = '<your-bucket-name>'; $auth = new Auth($accessKey, $secretKey); $token = $auth->uploadToken($bucket); $uploadMgr = new UploadManager(); list($ret, $err) = $uploadMgr->putFile($token, 'uploadKey', 'localFilePath'); if ($err !== null) { exit('上传失败:' . $err); }
2.调用七牛云存储的人脸识别API:
$accessKeyId = '<your-access-key>'; $accessKeySecret = '<your-access-key-secret>'; $url = 'https://api.qiniu.com/face/detection/detect'; $body = array( 'data' => array( 'uri' => $ret['key'], ), ); $content = json_encode($body); $timestamp = time(); $signStr = $url . " " . $content . " " . $timestamp; $sign = hash_hmac('sha1', $signStr, $accessKeySecret); $header = array( 'AccessKey: ' . $accessKeyId, 'Content-Type: application/json', 'Timestamp: ' . $timestamp, 'Sign: ' . $sign, ); $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_TIMEOUT, 30); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_HTTPHEADER, $header); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $content); $response = curl_exec($ch); if (curl_errno($ch) !== 0) { exit('请求失败:' . curl_error($ch)); } curl_close($ch); $result = json_decode($response, true); if ($result['code'] !== 0) { exit('人脸识别失败:' . $result['message']); }
3.解析人脸识别结果:
$faces = $result['result']['faces']; foreach ($faces as $face) { $position = $face['position']; $age = $face['age']; $gender = $face['gender']; //.... }
三、图像搜索功能实现:
1.上传图片到七牛云存储:
(同人脸识别功能实现中的上传图片步骤)
2.调用七牛云存储的图像搜索API:
$accessKeyId = '<your-access-key>'; $accessKeySecret = '<your-access-key-secret>'; $url = 'https://api.qiniu.com/image/v2/search'; $body = array( 'data' => array( 'uri' => $ret['key'], 'limit' => 10, // 设置返回结果的数量 ), ); $content = json_encode($body); $timestamp = time(); $signStr = $url . " " . $content . " " . $timestamp; $sign = hash_hmac('sha1', $signStr, $accessKeySecret); $header = array( 'AccessKey: ' . $accessKeyId, 'Content-Type: application/json', 'Timestamp: ' . $timestamp, 'Sign: ' . $sign, ); $ch = curl_init(); curl_setopt($ch, CURLOPT_URL, $url); curl_setopt($ch, CURLOPT_TIMEOUT, 30); curl_setopt($ch, CURLOPT_RETURNTRANSFER, 1); curl_setopt($ch, CURLOPT_HTTPHEADER, $header); curl_setopt($ch, CURLOPT_POST, 1); curl_setopt($ch, CURLOPT_POSTFIELDS, $content); $response = curl_exec($ch); if (curl_errno($ch) !== 0) { exit('请求失败:' . curl_error($ch)); } curl_close($ch); $result = json_decode($response, true); if ($result['code'] !== 0) { exit('图像搜索失败:' . $result['message']); }
3.解析图像搜索结果:
$items = $result['result']['items']; foreach ($items as $item) { $score = $item['score']; $key = $item['key']; //.... }
结束语:
通过使用PHP与七牛云存储接口,我们可以轻松实现图片的人脸识别和图像搜索功能。通过以上代码示例,我们可以了解到如何上传图片到七牛云存储,并通过调用相关API来实现人脸识别和图像搜索功能。希望这篇文章能对读者理解和使用PHP与七牛云存储接口有所帮助。
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