腾讯云文字通用印刷体识别
一、需要用的链接
通用印刷体识别参考文档：https://cloud.tencent.com/document/api/866/33526
公共参数文档：https://cloud.tencent.com/document/api/866/33518
腾讯云API密钥：https://console.cloud.tencent.com/cam/capi
在线调试工具：https://console.cloud.tencent.com/api/explorer?Product=ocr&Action=GeneralBasicOCR
二、签名方法 v3
签名方法 v3 PHP代码，在公共参数文档里有一个PHP签名演示案例，下方代码是我修正后的。
$secretId = "AKIDPh5MVTO2*0Pgn*tI*TN***Zgh*******";//腾讯云SecretId
$secretKey = "gXGxhJm3LVUh**uZu4g*************";//腾讯云SecretKey
$host = "ocr.tencentcloudapi.com";//就近地域接入
$imageurl="http://cdn.lhdlhd.com/wp-content/uploads/2020/10/20201017shili.png";//图片URL
$timestamp = time();//请求时间戳
$service = "ocr";//为产品名，通常为域名前缀
$algorithm = "TC3-HMAC-SHA256";//签名算法，目前固定为 TC3-HMAC-SHA256
$version = "2018-11-19";//操作的 API 的版本
$action = "GeneralBasicOCR";//接口参数：GeneralBasicOCR
$region = "ap-guangzhou";//地域列表：ap-guangzhou
// 第一步：拼接规范请求字符串
$httpRequestMethod = "POST";
$canonicalUri = "/";
$canonicalQueryString = "";
$canonicalHeaders = "content-type:application/json\n"."host:".$host."\n";
$signedHeaders = "content-type;host";
$payload = '{"ImageUrl":"'.$imageurl.'"}';
$hashedRequestPayload = hash("SHA256", $payload);
$canonicalRequest = $httpRequestMethod."\n"
.$canonicalUri."\n"
.$canonicalQueryString."\n"
.$canonicalHeaders."\n"
.$signedHeaders."\n"
.$hashedRequestPayload;
echo $canonicalRequest.PHP_EOL;
// 第二步：拼接待签名字符串
$date = gmdate("Y-m-d", $timestamp);
$credentialScope = $date."/".$service."/tc3_request";
$hashedCanonicalRequest = hash("SHA256", $canonicalRequest);
$stringToSign = $algorithm."\n"
.$timestamp."\n"
.$credentialScope."\n"
.$hashedCanonicalRequest;
echo $stringToSign.PHP_EOL;
// 第三步：计算签名字符串
$secretDate = hash_hmac("SHA256", $date, "TC3".$secretKey, true);
$secretService = hash_hmac("SHA256", $service, $secretDate, true);
$secretSigning = hash_hmac("SHA256", "tc3_request", $secretService, true);
$signature = hash_hmac("SHA256", $stringToSign, $secretSigning);
echo $signature.PHP_EOL;
// 第四步：拼接 Authorization
$authorization = $algorithm
." Credential=".$secretId."/".$credentialScope
.", SignedHeaders=content-type;host, Signature=".$signature;
echo $authorization.PHP_EOL;
$curl = "curl -X POST https://".$host
.' -H "Authorization: '.$authorization.'"'
.' -H "Content-Type: application/json; charset=utf-8"'
.' -H "Host: '.$host.'"'
.' -H "X-TC-Action: '.$action.'"'
.' -H "X-TC-Timestamp: '.$timestamp.'"'
.' -H "X-TC-Version: '.$version.'"'
.' -H "X-TC-Region: '.$region.'"'
." -d '".$payload."'";
echo $curl.PHP_EOL;三、拼接打印输出
<?php
/**
* Created by PhpStorm.
* User: shangguansi
* Date: 2020/10/17
* Time: 15:19
*/
$secretId = "AKIDPh5MVTO2*0Pgn*tI*TN***Zgh*******";//腾讯云SecretId
$secretKey = "gXGxhJm3LVUh**uZu4g*************";//腾讯云SecretKey
$host = "ocr.tencentcloudapi.com";//就近地域接入
$imageurl="http://cdn.lhdlhd.com/wp-content/uploads/2020/10/20201017shili.png";//图片URL
$timestamp = time();//请求时间戳
$service = "ocr";//为产品名，通常为域名前缀
$algorithm = "TC3-HMAC-SHA256";//签名算法，目前固定为 TC3-HMAC-SHA256
$version = "2018-11-19";//操作的 API 的版本
$action = "GeneralBasicOCR";//接口参数：GeneralBasicOCR
$region = "ap-guangzhou";//地域列表：ap-guangzhou
// 第一步：拼接规范请求字符串
$httpRequestMethod = "POST";
$canonicalUri = "/";
$canonicalQueryString = "";
$canonicalHeaders = "content-type:application/json\n"."host:".$host."\n";
$signedHeaders = "content-type;host";
$payload = '{"ImageUrl":"'.$imageurl.'"}';
$hashedRequestPayload = hash("SHA256", $payload);
$canonicalRequest = $httpRequestMethod."\n"
.$canonicalUri."\n"
.$canonicalQueryString."\n"
.$canonicalHeaders."\n"
.$signedHeaders."\n"
.$hashedRequestPayload;
//echo $canonicalRequest.PHP_EOL;
// 第二步：拼接待签名字符串
$date = gmdate("Y-m-d", $timestamp);
$credentialScope = $date."/".$service."/tc3_request";
$hashedCanonicalRequest = hash("SHA256", $canonicalRequest);
$stringToSign = $algorithm."\n"
.$timestamp."\n"
.$credentialScope."\n"
.$hashedCanonicalRequest;
//echo $stringToSign.PHP_EOL;
// 第三步：计算签名字符串
$secretDate = hash_hmac("SHA256", $date, "TC3".$secretKey, true);
$secretService = hash_hmac("SHA256", $service, $secretDate, true);
$secretSigning = hash_hmac("SHA256", "tc3_request", $secretService, true);
$signature = hash_hmac("SHA256", $stringToSign, $secretSigning);
//echo $signature.PHP_EOL;
// 第四步：拼接 Authorization
$authorization = $algorithm
." Credential=".$secretId."/".$credentialScope
.", SignedHeaders=content-type;host, Signature=".$signature;
//echo $authorization.PHP_EOL;
$curl = "curl -X POST https://".$host
.' -H "Authorization: '.$authorization.'"'
.' -H "Content-Type: application/json; charset=utf-8"'
.' -H "Host: '.$host.'"'
.' -H "X-TC-Action: '.$action.'"'
.' -H "X-TC-Timestamp: '.$timestamp.'"'
.' -H "X-TC-Version: '.$version.'"'
.' -H "X-TC-Region: '.$region.'"'
." -d '".$payload."'";
//echo $curl.PHP_EOL;
//第五步：打印输出
$url="https://ocr.tencentcloudapi.com";
$header = array(
"Authorization: $authorization",
"Content-Type: application/json",
"Host: $host",
"X-TC-Action: $action",
"X-TC-Timestamp: $timestamp",
"X-TC-Version: $version",
"X-TC-Region: $region",
"X-TC-Language: zh-CN",
);
$data = array(
"ImageUrl" => "$imageurl",
);
$jsonStr = json_encode($data,JSON_UNESCAPED_SLASHES);//让URL不转义
$res=Curl($url, $jsonStr,$header);
$ret=json_decode($res,true);
//输出结果
echo "<pre>";
print_r($ret);
echo "</pre>";
function Curl($url, $data, $header)
{
//初始化
$ch = curl_init();
//设置抓取的url
curl_setopt($ch, CURLOPT_URL, $url);
// 添加头信息
curl_setopt($ch, CURLOPT_HTTPHEADER, $header);
//设置post方式提交
curl_setopt($ch, CURLOPT_POST, true);
// 设置post请求参数
curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
//设置获取的信息以文件流的形式返回，而不是直接输出。
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);
//设置头文件的信息作为数据流输出
curl_setopt($ch, CURLOPT_HEADER, false);
// CURLINFO_HEADER_OUT选项可以拿到请求头信息
curl_setopt($ch, CURLINFO_HEADER_OUT, true);
// 不验证SSL
curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, FALSE);
curl_setopt($ch, CURLOPT_SSL_VERIFYHOST, FALSE);
$result = curl_exec($ch);
if ($error = curl_error($ch)) {
die($error);
}
curl_close($ch);
return $result;
}四、示例图片及输出结果
示例图片
示例结果
Array
(
[Response] => Array
(
[TextDetections] => Array
(
[0] => Array
(
[DetectedText] => 2.输入参数
[Confidence] => 99
[ItemPolygon] => Array
(
[X] => 14
[Y] => 2
[Width] => 105
[Height] => 23
)
[Polygon] => Array
(
[0] => Array
(
[X] => 14
[Y] => 2
)
[1] => Array
(
[X] => 118
[Y] => 2
)
[2] => Array
(
[X] => 118
[Y] => 24
)
[3] => Array
(
[X] => 14
[Y] => 24
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":1}}
)
[1] => Array
(
[DetectedText] => 以下请求参数列表仅列出了接口请求参数和部分公共参数，完整公共参数列表见公共请求参数。
[Confidence] => 98
[ItemPolygon] => Array
(
[X] => 14
[Y] => 44
[Width] => 584
[Height] => 16
)
[Polygon] => Array
(
[0] => Array
(
[X] => 14
[Y] => 44
)
[1] => Array
(
[X] => 597
[Y] => 44
)
[2] => Array
(
[X] => 597
[Y] => 59
)
[3] => Array
(
[X] => 14
[Y] => 59
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":2}}
)
[2] => Array
(
[DetectedText] => 参数名称
[Confidence] => 99
[ItemPolygon] => Array
(
[X] => 30
[Y] => 87
[Width] => 56
[Height] => 15
)
[Polygon] => Array
(
[0] => Array
(
[X] => 30
[Y] => 87
)
[1] => Array
(
[X] => 85
[Y] => 87
)
[2] => Array
(
[X] => 85
[Y] => 101
)
[3] => Array
(
[X] => 30
[Y] => 101
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":3}}
)
[3] => Array
(
[DetectedText] => 必选
[Confidence] => 99
[ItemPolygon] => Array
(
[X] => 159
[Y] => 87
[Width] => 30
[Height] => 15
)
[Polygon] => Array
(
[0] => Array
(
[X] => 159
[Y] => 87
)
[1] => Array
(
[X] => 188
[Y] => 87
)
[2] => Array
(
[X] => 188
[Y] => 101
)
[3] => Array
(
[X] => 159
[Y] => 101
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":8}}
)
[4] => Array
(
[DetectedText] => 类型
[Confidence] => 99
[ItemPolygon] => Array
(
[X] => 214
[Y] => 86
[Width] => 30
[Height] => 17
)
[Polygon] => Array
(
[0] => Array
(
[X] => 214
[Y] => 86
)
[1] => Array
(
[X] => 243
[Y] => 86
)
[2] => Array
(
[X] => 243
[Y] => 102
)
[3] => Array
(
[X] => 214
[Y] => 102
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":13}}
)
[5] => Array
(
[DetectedText] => Action
[Confidence] => 99
[ItemPolygon] => Array
(
[X] => 28
[Y] => 125
[Width] => 41
[Height] => 14
)
[Polygon] => Array
(
[0] => Array
(
[X] => 28
[Y] => 125
)
[1] => Array
(
[X] => 68
[Y] => 125
)
[2] => Array
(
[X] => 68
[Y] => 138
)
[3] => Array
(
[X] => 28
[Y] => 138
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":3}}
)
[6] => Array
(
[DetectedText] => 是
[Confidence] => 99
[ItemPolygon] => Array
(
[X] => 159
[Y] => 122
[Width] => 16
[Height] => 18
)
[Polygon] => Array
(
[0] => Array
(
[X] => 159
[Y] => 122
)
[1] => Array
(
[X] => 174
[Y] => 122
)
[2] => Array
(
[X] => 174
[Y] => 139
)
[3] => Array
(
[X] => 159
[Y] => 139
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":8}}
)
[7] => Array
(
[DetectedText] => String
[Confidence] => 98
[ItemPolygon] => Array
(
[X] => 214
[Y] => 125
[Width] => 38
[Height] => 15
)
[Polygon] => Array
(
[0] => Array
(
[X] => 214
[Y] => 125
)
[1] => Array
(
[X] => 251
[Y] => 125
)
[2] => Array
(
[X] => 251
[Y] => 139
)
[3] => Array
(
[X] => 214
[Y] => 139
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":13}}
)
[8] => Array
(
[DetectedText] => 公共参数，本接口取值: GeneralBasicOCR.
[Confidence] => 94
[ItemPolygon] => Array
(
[X] => 294
[Y] => 124
[Width] => 275
[Height] => 16
)
[Polygon] => Array
(
[0] => Array
(
[X] => 294
[Y] => 124
)
[1] => Array
(
[X] => 568
[Y] => 124
)
[2] => Array
(
[X] => 568
[Y] => 139
)
[3] => Array
(
[X] => 294
[Y] => 139
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":18}}
)
[9] => Array
(
[DetectedText] => Version
[Confidence] => 99
[ItemPolygon] => Array
(
[X] => 28
[Y] => 163
[Width] => 49
[Height] => 15
)
[Polygon] => Array
(
[0] => Array
(
[X] => 28
[Y] => 163
)
[1] => Array
(
[X] => 76
[Y] => 163
)
[2] => Array
(
[X] => 76
[Y] => 177
)
[3] => Array
(
[X] => 28
[Y] => 177
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":3}}
)
[10] => Array
(
[DetectedText] => String
[Confidence] => 97
[ItemPolygon] => Array
(
[X] => 214
[Y] => 163
[Width] => 38
[Height] => 16
)
[Polygon] => Array
(
[0] => Array
(
[X] => 214
[Y] => 163
)
[1] => Array
(
[X] => 251
[Y] => 163
)
[2] => Array
(
[X] => 251
[Y] => 178
)
[3] => Array
(
[X] => 214
[Y] => 178
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":13}}
)
[11] => Array
(
[DetectedText] => 公共参数，本接]取值: 2018-11-19.
[Confidence] => 92
[ItemPolygon] => Array
(
[X] => 294
[Y] => 162
[Width] => 231
[Height] => 16
)
[Polygon] => Array
(
[0] => Array
(
[X] => 294
[Y] => 162
)
[1] => Array
(
[X] => 524
[Y] => 162
)
[2] => Array
(
[X] => 524
[Y] => 177
)
[3] => Array
(
[X] => 294
[Y] => 177
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":19}}
)
[12] => Array
(
[DetectedText] => 公共参数，详见产品支持的地域列表，本接口仅支持其中的: ap-
[Confidence] => 94
[ItemPolygon] => Array
(
[X] => 294
[Y] => 200
[Width] => 396
[Height] => 17
)
[Polygon] => Array
(
[0] => Array
(
[X] => 294
[Y] => 200
)
[1] => Array
(
[X] => 689
[Y] => 200
)
[2] => Array
(
[X] => 689
[Y] => 216
)
[3] => Array
(
[X] => 294
[Y] => 216
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":20}}
)
[13] => Array
(
[DetectedText] => Region
[Confidence] => 88
[ItemPolygon] => Array
(
[X] => 28
[Y] => 222
[Width] => 46
[Height] => 16
)
[Polygon] => Array
(
[0] => Array
(
[X] => 28
[Y] => 222
)
[1] => Array
(
[X] => 73
[Y] => 222
)
[2] => Array
(
[X] => 73
[Y] => 237
)
[3] => Array
(
[X] => 28
[Y] => 237
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":4}}
)
[14] => Array
(
[DetectedText] => 是
[Confidence] => 99
[ItemPolygon] => Array
(
[X] => 159
[Y] => 220
[Width] => 17
[Height] => 17
)
[Polygon] => Array
(
[0] => Array
(
[X] => 159
[Y] => 220
)
[1] => Array
(
[X] => 175
[Y] => 220
)
[2] => Array
(
[X] => 175
[Y] => 236
)
[3] => Array
(
[X] => 159
[Y] => 236
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":9}}
)
[15] => Array
(
[DetectedText] => String
[Confidence] => 92
[ItemPolygon] => Array
(
[X] => 214
[Y] => 223
[Width] => 38
[Height] => 15
)
[Polygon] => Array
(
[0] => Array
(
[X] => 214
[Y] => 223
)
[1] => Array
(
[X] => 251
[Y] => 223
)
[2] => Array
(
[X] => 251
[Y] => 237
)
[3] => Array
(
[X] => 214
[Y] => 237
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":14}}
)
[16] => Array
(
[DetectedText] => beiing, ap-guangzhou, ap-hongkong, ap-seoul, ap-shanghal, na-
[Confidence] => 89
[ItemPolygon] => Array
(
[X] => 293
[Y] => 222
[Width] => 403
[Height] => 17
)
[Polygon] => Array
(
[0] => Array
(
[X] => 293
[Y] => 222
)
[1] => Array
(
[X] => 695
[Y] => 222
)
[2] => Array
(
[X] => 695
[Y] => 238
)
[3] => Array
(
[X] => 293
[Y] => 238
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":20}}
)
[17] => Array
(
[DetectedText] => toronto
[Confidence] => 99
[ItemPolygon] => Array
(
[X] => 293
[Y] => 244
[Width] => 45
[Height] => 13
)
[Polygon] => Array
(
[0] => Array
(
[X] => 293
[Y] => 244
)
[1] => Array
(
[X] => 337
[Y] => 244
)
[2] => Array
(
[X] => 337
[Y] => 256
)
[3] => Array
(
[X] => 293
[Y] => 256
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":20}}
)
[18] => Array
(
[DetectedText] => 图片/PDF的Base64值。
[Confidence] => 98
[ItemPolygon] => Array
(
[X] => 294
[Y] => 281
[Width] => 149
[Height] => 15
)
[Polygon] => Array
(
[0] => Array
(
[X] => 294
[Y] => 281
)
[1] => Array
(
[X] => 442
[Y] => 281
)
[2] => Array
(
[X] => 442
[Y] => 295
)
[3] => Array
(
[X] => 294
[Y] => 295
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":21}}
)
[19] => Array
(
[DetectedText] => 要求图片/PDF经Base64编码后不超过7M,分辨率建议600*800以
[Confidence] => 99
[ItemPolygon] => Array
(
[X] => 293
[Y] => 301
[Width] => 409
[Height] => 16
)
[Polygon] => Array
(
[0] => Array
(
[X] => 293
[Y] => 301
)
[1] => Array
(
[X] => 701
[Y] => 301
)
[2] => Array
(
[X] => 701
[Y] => 316
)
[3] => Array
(
[X] => 293
[Y] => 316
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":22}}
)
[20] => Array
(
[DetectedText] => ImageBase64
[Confidence] => 97
[ItemPolygon] => Array
(
[X] => 28
[Y] => 323
[Width] => 89
[Height] => 15
)
[Polygon] => Array
(
[0] => Array
(
[X] => 28
[Y] => 323
)
[1] => Array
(
[X] => 116
[Y] => 323
)
[2] => Array
(
[X] => 116
[Y] => 337
)
[3] => Array
(
[X] => 28
[Y] => 337
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":5}}
)
[21] => Array
(
[DetectedText] => 否
[Confidence] => 99
[ItemPolygon] => Array
(
[X] => 159
[Y] => 321
[Width] => 16
[Height] => 16
)
[Polygon] => Array
(
[0] => Array
(
[X] => 159
[Y] => 321
)
[1] => Array
(
[X] => 174
[Y] => 321
)
[2] => Array
(
[X] => 174
[Y] => 336
)
[3] => Array
(
[X] => 159
[Y] => 336
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":10}}
)
[22] => Array
(
[DetectedText] => String
[Confidence] => 98
[ItemPolygon] => Array
(
[X] => 214
[Y] => 323
[Width] => 38
[Height] => 15
)
[Polygon] => Array
(
[0] => Array
(
[X] => 214
[Y] => 323
)
[1] => Array
(
[X] => 251
[Y] => 323
)
[2] => Array
(
[X] => 251
[Y] => 337
)
[3] => Array
(
[X] => 214
[Y] => 337
)
)
[AdvancedInfo] => {"Parag":{"ParagNo":15}}
)
[23] => Array
(
[DetectedText] => 上,支持PNG、JPG、 JPEG、 BMP、 PDF格式。
[Confidence] => 87
[ItemPolygon] => Array
(
[X] => 294
[Y] => 321
[Width] => 298
[Height] => 19
)
[Polygon] => Array
(
[0] => Array
(
[X] => 294
[Y] => 321
)
[1] => Array
(
[X] => 591
[Y] => 321
)
[2] => Array
(
[X] => 591
[Y] => 339
)
[3] => Array
(
[X] => 294
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[DetectedText] => 图片存储于腾讯云的Url可保障更高的下载速度和稳定性，建议图片
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