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更新时间:2024-06-19 GMT+08:00
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防疫健康码识别

功能介绍

支持对全国各地区不同版式的防疫健康码中的姓名、健康码更新时间、健康码颜色,并将识别的结构化结果返回给用户。

支持识别4种健康码颜色,包括绿码、黄码、红码、灰码;支持返回各个关键字段的置信度,以便提高人工校验效率。

已推出三码合一功能(健康码、核酸检测记录、行程卡)。您只需要调用1个接口,即可智能结构化识别健康码、核酸检测记录、行程卡等页面信息,包括防疫码类别、姓名、身份证号码、手机号码、省份、城市、健康码或行程卡的更新时间、健康码或行程卡颜色、疫苗接种情况、核酸检测结果、核酸检测机构、核酸检测结果更新时间、核酸检测采样时间、行程卡的途经地址等14个关键字段。

图1 防疫健康码版式示例图

约束与限制

  • 支持全国不同地区健康码的识别。
  • 只支持识别PNG、JPG、JPEG、BMP、TIFF格式图片。
  • 图像各边的像素大小在15px到8192px之间。
  • 图像中健康码区域有效占比超过80%,保证整张健康码内容及其边缘包含在图像内。
  • 推荐采用手机截图图像。
  • 支持图像中健康码任意角度的水平旋转(需开启方向检测)。
  • 能处理反光、暗光等干扰的图片但影响识别精度。
  • 目前只支持识别单张健康码。

调用方法

请参见如何调用API

前提条件

在使用防疫健康码识别之前,需要您完成服务申请和认证鉴权,具体操作流程请参见开通服务认证鉴权章节。

用户首次使用需要先申请开通。服务只需要开通一次即可,后面使用时无需再次申请。如未开通服务,调用服务时会提示ModelArts.4204报错,请在调用服务前先进入控制台开通服务,并注意开通服务区域与调用服务的区域保持一致。

URI

POST /v2/{project_id}/ocr/health-code

表1 路径参数

参数

是否必选

说明

endpoint

终端节点,即调用API的请求地址。

不同服务不同区域的endpoint不同,您可以从终端节点中获取。

例如,OCR服务在“华北-北京四”区域的“endpoint”“ocr.cn-north-4.myhuaweicloud.com”

project_id

项目ID,您可以从获取项目ID中获取。

请求参数

表2 请求Header参数

参数

是否必选

参数类型

描述

X-Auth-Token

String

用户Token。

用于获取操作API的权限。获取Token接口响应消息头中X-Subject-Token的值即为Token。

Content-Type

String

发送的实体的MIME类型,参数值为“application/json”。

Enterprise-Project-Id

String

企业项目ID。OCR支持通过企业项目管理(EPS)对不同用户组和用户的资源使用,进行分账。

获取方法:进入“企业项目管理”页面,单击企业项目名称,在企业项目详情页获取Enterprise-Project-Id(企业项目ID)。

企业项目创建步骤请参见用户指南。

说明:

创建企业项目后,在传参时,有以下三类场景。

  • 携带正确的ID,正常使用OCR服务,账单的企业项目会被分类到企业ID对应的企业项目中。
  • 携带格式正确但不存在的ID,正常使用OCR服务,账单的企业项目会显示对应不存在的企业项目ID。
  • 不携带ID或格式错误ID(包含特殊字符等),正常使用OCR服务,账单的企业项目会被分类到"default"中。
表3 请求Body参数

参数

是否必选

参数类型

描述

image

String

与url二选一。

图片的Base64编码,图片尺寸不小于15×15像素,最长边不超过8192像素,支持JPG/JPEG/PNG/BMP/TIFF格式。

图片Base64编码示例如/9j/4AAQSkZJRgABAg...,带有多余前缀会产生The image format is not supported报错。

url

String

与image二选一。

图片的URL路径,目前仅支持华为云上OBS提供的匿名公开授权访问的URL以及公网URL。

detect_direction

Boolean

校正图片的倾斜角度开关,可选值如下所示:

  • true:校正图片的倾斜角度
  • false:不校正图片的倾斜角度

支持任意角度的校正,未传入该参数时默认为“false”。

待识别图片如果存在倾斜,建议将此参数设置为“true”。

响应参数

状态码: 200

表4 响应Body参数

参数

参数类型

描述

result

HealthCodeResult object

识别结果。

调用失败时此字段为空。

表5 HealthCodeResult

参数

参数类型

描述

type

String

防疫码类别:

  • 健康码:health_code
  • 核酸检测记录:pcr_test_record
  • 通信行程卡:travel_card
  • 其他:other

name

String

姓名

idcard_number

String

身份证号码

phone_number

String

手机号码

province

String

省份

city

String

城市

time

String

健康码或行程卡的更新时间

color

String

健康码或行程卡颜色。 健康码颜色可选值包括:

  • "green",绿码
  • "yellow",黄码
  • "red",红码
  • "gray",灰码

行程卡颜色可选值包括:

  • "green",绿码
  • "yellow",黄码
  • "red",红码

vaccination_status

String

疫苗接种情况,可选值包括:

  • 未接种
  • 接种中
  • 无接种记录
  • 已接种1针
  • 已接种2针
  • 已接种3针
  • 已完成新冠疫苗接种

test_interval

String

核酸检测间隔时长,可选值包括:

  • 24小时内
  • 48小时内
  • 72小时内
  • 5天内
  • 7天内
  • 7天外

pcr_test_result

String

核酸检测结果,可选值包括:

  • "positive",即阳性
  • "negative",即阴性
  • "unknown",未知

pcr_test_organization

String

核酸检测机构

pcr_test_time

String

核酸检测结果更新时间

pcr_sampling_time

String

核酸检测采样时间

reached_city

Array of strings

行程卡的途径地址

confidence

Object

各个字段的置信度。

words_block_count

Integer

代表检测识别出来的文字块数目。

words_block_list

Array of HealthCodeWordsBlockList objects

识别文字块列表,输出顺序从左到右,从上到下。

表6 HealthCodeWordsBlockList

参数

参数类型

描述

words

String

文字块识别结果。

location

Array<Array<Integer>>

识别到的文字块的区域位置信息,列表形式,分别表示文字块4个顶点的(x,y)坐标。采用图像坐标系,图像坐标原点为图像左上角,x轴沿水平方向,y轴沿竖直方向。

confidence

Float

各个字段的置信度

状态码: 400

表7 响应Body参数

参数

参数类型

描述

error_code

String

调用失败时的错误码,具体请参见错误码

调用成功时无此字段。

error_msg

String

调用失败时的错误信息。

调用成功时无此字段。

请求示例

  • ndpoint即调用API的请求地址,不同服务不同区域的Endpoint不同,具体请参见终端节点。 例如,防疫健康码识别服务部署在“华北-北京四”区域的“endpoint”为“ocr.cn-north-4.myhuaweicloud.com”或“ocr.cn-north-4.myhuaweicloud.cn”,请求URL为“https://ocr.cn-north-4.myhuaweicloud.com/v2/{project_id}/ocr/health-code”,“project_id”为项目ID,获取方法请参见获取项目ID
  • 如何获取Token请参见认证鉴权
  • 传入防疫健康码图片的base64编码进行文字识别
    POST https://ocr.cn-north-4.myhuaweicloud.com/v2/{project_id}/health-code
    Request Header:
    Content-Type: application/json
    X-Auth-Token: MIINRwYJKoZIhvcNAQcCoIINODCCDTQCAQExDTALBglghkgBZQMEAgEwgguVBgkqhkiG...
    Request Body:
    {
      "image" : "/9j/4AAQSkZJRgABAgEASABIAAD/4RFZRXhpZgAATU0AKgAAAA..."
    }
  • 传入防疫健康码图片的url进行文字识别
    POST https://ocr.cn-north-4.myhuaweicloud.com/v2/{project_id}/health-code
    Request Header:
    Content-Type: application/json
    X-Auth-Token: MIINRwYJKoZIhvcNAQcCoIINODCCDTQCAQExDTALBglghkgBZQMEAgEwgguVBgkqhkiG...
    Request Body:
    {
      "url" : "https://BucketName.obs.myhuaweicloud.com/ObjectName"
    }

响应示例

状态码: 200

成功响应示例

{
  "result" : {
    "type" : "health_code",
    "name" : "**余",
    "idcard_number" : "",
    "phone_number" : "",
    "province" : "安徽省",
    "city" : "合肥市",
    "time" : "2022-03-30 15:37:13",
    "color" : "green",
    "vaccination_status" : "x 2已接种新冠疫苗",
    "pcr_test_result" : "",
    "pcr_test_organization" : "",
    "pcr_test_time" : "",
    "pcr_sampling_time" : "",
    "reached_city" : "",
    "confidence" : {
      "type" : 0.615,
      "name" : 0.9003,
      "idcard_number" : 0,
      "phone_number" : 0,
      "province" : 0,
      "city" : 0.8785,
      "time" : 0.9174,
      "color" : 0.615,
      "vaccination_status" : 0.8691,
      "pcr_test_result" : 0,
      "pcr_test_organization" : 0,
      "pcr_test_time" : 0,
      "pcr_sampling_time" : 0,
      "reached_city" : 0
    },
    "words_block_count" : 16,
    "words_block_list" : [ {
      "words" : "文字块1",
      "confidence" : 0.8327,
      "location" : [ [ 754, 21 ], [ 855, 21 ], [ 855, 60 ], [ 754, 60 ] ]
    }, {
      "words" : "文字块2",
      "confidence" : 0.7972,
      "location" : [ [ 929, 22 ], [ 1022, 22 ], [ 1022, 59 ], [ 929, 59 ] ]
    } ]
  }
}

状态码: 400

失败响应示例

{
  "error_code" : "AIS.0103",
  "error_msg" : "The image size does not meet the requirements."
}

SDK代码示例

SDK代码示例如下。

使用SDK前建议将SDK更新至最新版,防止本地旧版SDK无法使用最新的OCR功能。

  • 传入防疫健康码图片的base64编码进行文字识别
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    package com.huaweicloud.sdk.test;
    
    import com.huaweicloud.sdk.core.auth.ICredential;
    import com.huaweicloud.sdk.core.auth.BasicCredentials;
    import com.huaweicloud.sdk.core.exception.ConnectionException;
    import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
    import com.huaweicloud.sdk.core.exception.ServiceResponseException;
    import com.huaweicloud.sdk.ocr.v1.region.OcrRegion;
    import com.huaweicloud.sdk.ocr.v1.*;
    import com.huaweicloud.sdk.ocr.v1.model.*;
    
    
    public class RecognizeHealthCodeSolution {
    
        public static void main(String[] args) {
            // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
            // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
            String ak = System.getenv("CLOUD_SDK_AK");
            String sk = System.getenv("CLOUD_SDK_SK");
    
            ICredential auth = new BasicCredentials()
                    .withAk(ak)
                    .withSk(sk);
    
            OcrClient client = OcrClient.newBuilder()
                    .withCredential(auth)
                    .withRegion(OcrRegion.valueOf("<YOUR REGION>"))
                    .build();
            RecognizeHealthCodeRequest request = new RecognizeHealthCodeRequest();
            HealthCodeRequestBody body = new HealthCodeRequestBody();
            body.withImage("/9j/4AAQSkZJRgABAgEASABIAAD/4RFZRXhpZgAATU0AKgAAAA...");
            request.withBody(body);
            try {
                RecognizeHealthCodeResponse response = client.recognizeHealthCode(request);
                System.out.println(response.toString());
            } catch (ConnectionException e) {
                e.printStackTrace();
            } catch (RequestTimeoutException e) {
                e.printStackTrace();
            } catch (ServiceResponseException e) {
                e.printStackTrace();
                System.out.println(e.getHttpStatusCode());
                System.out.println(e.getRequestId());
                System.out.println(e.getErrorCode());
                System.out.println(e.getErrorMsg());
            }
        }
    }
    
  • 传入防疫健康码图片的url进行文字识别
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    package com.huaweicloud.sdk.test;
    
    import com.huaweicloud.sdk.core.auth.ICredential;
    import com.huaweicloud.sdk.core.auth.BasicCredentials;
    import com.huaweicloud.sdk.core.exception.ConnectionException;
    import com.huaweicloud.sdk.core.exception.RequestTimeoutException;
    import com.huaweicloud.sdk.core.exception.ServiceResponseException;
    import com.huaweicloud.sdk.ocr.v1.region.OcrRegion;
    import com.huaweicloud.sdk.ocr.v1.*;
    import com.huaweicloud.sdk.ocr.v1.model.*;
    
    
    public class RecognizeHealthCodeSolution {
    
        public static void main(String[] args) {
            // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
            // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
            String ak = System.getenv("CLOUD_SDK_AK");
            String sk = System.getenv("CLOUD_SDK_SK");
    
            ICredential auth = new BasicCredentials()
                    .withAk(ak)
                    .withSk(sk);
    
            OcrClient client = OcrClient.newBuilder()
                    .withCredential(auth)
                    .withRegion(OcrRegion.valueOf("<YOUR REGION>"))
                    .build();
            RecognizeHealthCodeRequest request = new RecognizeHealthCodeRequest();
            HealthCodeRequestBody body = new HealthCodeRequestBody();
            body.withUrl("https://BucketName.obs.myhuaweicloud.com/ObjectName");
            request.withBody(body);
            try {
                RecognizeHealthCodeResponse response = client.recognizeHealthCode(request);
                System.out.println(response.toString());
            } catch (ConnectionException e) {
                e.printStackTrace();
            } catch (RequestTimeoutException e) {
                e.printStackTrace();
            } catch (ServiceResponseException e) {
                e.printStackTrace();
                System.out.println(e.getHttpStatusCode());
                System.out.println(e.getRequestId());
                System.out.println(e.getErrorCode());
                System.out.println(e.getErrorMsg());
            }
        }
    }
    
  • 传入防疫健康码图片的base64编码进行文字识别
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    # coding: utf-8
    
    from huaweicloudsdkcore.auth.credentials import BasicCredentials
    from huaweicloudsdkocr.v1.region.ocr_region import OcrRegion
    from huaweicloudsdkcore.exceptions import exceptions
    from huaweicloudsdkocr.v1 import *
    
    if __name__ == "__main__":
        # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        ak = os.getenv("CLOUD_SDK_AK")
        sk = os.getenv("CLOUD_SDK_SK")
    
        credentials = BasicCredentials(ak, sk) \
    
        client = OcrClient.new_builder() \
            .with_credentials(credentials) \
            .with_region(OcrRegion.value_of("<YOUR REGION>")) \
            .build()
    
        try:
            request = RecognizeHealthCodeRequest()
            request.body = HealthCodeRequestBody(
                image="/9j/4AAQSkZJRgABAgEASABIAAD/4RFZRXhpZgAATU0AKgAAAA..."
            )
            response = client.recognize_health_code(request)
            print(response)
        except exceptions.ClientRequestException as e:
            print(e.status_code)
            print(e.request_id)
            print(e.error_code)
            print(e.error_msg)
    
  • 传入防疫健康码图片的url进行文字识别
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    # coding: utf-8
    
    from huaweicloudsdkcore.auth.credentials import BasicCredentials
    from huaweicloudsdkocr.v1.region.ocr_region import OcrRegion
    from huaweicloudsdkcore.exceptions import exceptions
    from huaweicloudsdkocr.v1 import *
    
    if __name__ == "__main__":
        # The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        # In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        ak = os.getenv("CLOUD_SDK_AK")
        sk = os.getenv("CLOUD_SDK_SK")
    
        credentials = BasicCredentials(ak, sk) \
    
        client = OcrClient.new_builder() \
            .with_credentials(credentials) \
            .with_region(OcrRegion.value_of("<YOUR REGION>")) \
            .build()
    
        try:
            request = RecognizeHealthCodeRequest()
            request.body = HealthCodeRequestBody(
                url="https://BucketName.obs.myhuaweicloud.com/ObjectName"
            )
            response = client.recognize_health_code(request)
            print(response)
        except exceptions.ClientRequestException as e:
            print(e.status_code)
            print(e.request_id)
            print(e.error_code)
            print(e.error_msg)
    
  • 传入防疫健康码图片的base64编码进行文字识别
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    package main
    
    import (
    	"fmt"
    	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
        ocr "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/ocr/v1"
    	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/ocr/v1/model"
        region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/ocr/v1/region"
    )
    
    func main() {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        ak := os.Getenv("CLOUD_SDK_AK")
        sk := os.Getenv("CLOUD_SDK_SK")
    
        auth := basic.NewCredentialsBuilder().
            WithAk(ak).
            WithSk(sk).
            Build()
    
        client := ocr.NewOcrClient(
            ocr.OcrClientBuilder().
                WithRegion(region.ValueOf("<YOUR REGION>")).
                WithCredential(auth).
                Build())
    
        request := &model.RecognizeHealthCodeRequest{}
    	imageHealthCodeRequestBody:= "/9j/4AAQSkZJRgABAgEASABIAAD/4RFZRXhpZgAATU0AKgAAAA..."
    	request.Body = &model.HealthCodeRequestBody{
    		Image: &imageHealthCodeRequestBody,
    	}
    	response, err := client.RecognizeHealthCode(request)
    	if err == nil {
            fmt.Printf("%+v\n", response)
        } else {
            fmt.Println(err)
        }
    }
    
  • 传入防疫健康码图片的url进行文字识别
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    package main
    
    import (
    	"fmt"
    	"github.com/huaweicloud/huaweicloud-sdk-go-v3/core/auth/basic"
        ocr "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/ocr/v1"
    	"github.com/huaweicloud/huaweicloud-sdk-go-v3/services/ocr/v1/model"
        region "github.com/huaweicloud/huaweicloud-sdk-go-v3/services/ocr/v1/region"
    )
    
    func main() {
        // The AK and SK used for authentication are hard-coded or stored in plaintext, which has great security risks. It is recommended that the AK and SK be stored in ciphertext in configuration files or environment variables and decrypted during use to ensure security.
        // In this example, AK and SK are stored in environment variables for authentication. Before running this example, set environment variables CLOUD_SDK_AK and CLOUD_SDK_SK in the local environment
        ak := os.Getenv("CLOUD_SDK_AK")
        sk := os.Getenv("CLOUD_SDK_SK")
    
        auth := basic.NewCredentialsBuilder().
            WithAk(ak).
            WithSk(sk).
            Build()
    
        client := ocr.NewOcrClient(
            ocr.OcrClientBuilder().
                WithRegion(region.ValueOf("<YOUR REGION>")).
                WithCredential(auth).
                Build())
    
        request := &model.RecognizeHealthCodeRequest{}
    	urlHealthCodeRequestBody:= "https://BucketName.obs.myhuaweicloud.com/ObjectName"
    	request.Body = &model.HealthCodeRequestBody{
    		Url: &urlHealthCodeRequestBody,
    	}
    	response, err := client.RecognizeHealthCode(request)
    	if err == nil {
            fmt.Printf("%+v\n", response)
        } else {
            fmt.Println(err)
        }
    }
    

更多编程语言的SDK代码示例,请参见API Explorer的代码示例页签,可生成自动对应的SDK代码示例。

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