自定义模板OCR
OCR自定义模板将于2025.12.31正式下线,为避免影响您目前的业务,请您及时进行相关迁移工作,迁移指导详见OCR自定义模板下线公告。
功能介绍
自定义模板OCR,支持用户自定义模板,对于版式固定的各种票据和卡证,通过可视化界面操作,指定需要识别的关键字段,实现用户特定格式图片的自动识别和结构化提取。
约束与限制
- 只支持识别PNG、JPG、PNG、BMP、TIFF、GIF、WEBP格式图片。
- 图像各边的像素大小在100px到8192px之间。
- 图像中识别区域有效占比超过80%,保证整张表格及其边缘包含在图像内。
- 支持图像任意角度的水平旋转。
- 目前不支持复杂背景(如户外自然场景、防伪水印等)和表格线扭曲图像的文字识别。
- 支持中英文以及部分繁体字。
- API支持识别的图片版式依赖于创建自定义OCR工作流时的类型。
调用方法
请参见如何调用API。
URI
POST /v2/{project_id}/ocr/custom-template
请求参数
参数 |
是否必选 |
参数类型 |
描述 |
---|---|---|---|
X-Auth-Token |
是 |
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 |
是 |
String |
发送的实体的MIME类型,参数值为“application/json”。 |
Enterprise-Project-Id |
否 |
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。
|
参数 |
是否必选 |
参数类型 |
描述 |
---|---|---|---|
image |
否 |
String |
与url二选一 图像数据,base64编码,要求base64编码后大小不超过10MB。图片最小边不小于15px,最长边不超过8192px,支持JPEG、JPG、PNG、BMP、TIFF、GIF、WEBP格式。 图片文件Base64编码字符串,单击这里查看详细获取方式。 |
url |
否 |
String |
与image二选一 图片的URL路径,目前支持:
说明:
|
template_id |
否 |
String |
该参数与classifier_id二选一。 模型id,如果传入,启用单模板识别模式。 |
classifier_id |
否 |
String |
该参数与template_id二选一。 分类器id,如果传入,启用多模板识别模式。 |
classifier_mode |
否 |
Boolean |
该参数与classifier_id参数配合使用,可选值如下所示:
说明:
如果未传入该参数时默认为false,即正常返回多模板识别结果。 |
响应参数
状态码: 200
参数 |
参数类型 |
描述 |
---|---|---|
result |
Object |
调用成功时表示调用结果。 调用失败时无此字段。 |
template_id |
String |
调用成功时返回调用模板id。 调用失败时无此字段。 |
状态码: 400
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
- 传入自定义模板OCR的图片的base64编码进行文字识别
POST https://{endpoint}/v2/{project_id}/ocr/custom-template Request Header: Content-Type: application/json X-Auth-Token: MIINRwYJKoZIhvcNAQcCoIINODCCDTQCAQExDTALBglghkgBZQMEAgEwgguVBgkqhkiG... Request Body: { "image" : "/9j/4AAQSkZJRgABAgEASABIAAD/4RFZRXhpZgAATU0AKgAAAA...", "classifier_id" : "3bed12e0-7c1e-11ed-9bdb-0255ac10009d", "classifier_mode" : true }
- 传入自定义模板OCR的图片的url进行文字识别
POST https://{endpoint}/v2/{project_id}/ocr/custom-template Request Header: Content-Type: application/json X-Auth-Token: MIINRwYJKoZIhvcNAQcCoIINODCCDTQCAQExDTALBglghkgBZQMEAgEwgguVBgkqhkiG... Request Body: { "url" : "https://BucketName.obs.myhuaweicloud.com/ObjectName", "classifier_id" : "3bed12e0-7c1e-11ed-9bdb-0255ac10009d", "classifier_mode" : true }
响应示例
状态码: 200
成功响应示例
{ "result" : { "template_id" : "43580526-658f-11ed-863a-0242ac11000b", "template_name" : "3", "confidence" : 0.4057 }, "template_id" : "43580526-658f-11ed-863a-0242ac11000b" }
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。
- 传入自定义模板OCR的图片的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 RecognizeCustomTemplateSolution { 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(); RecognizeCustomTemplateRequest request = new RecognizeCustomTemplateRequest(); CustomTemplateRequestBody body = new CustomTemplateRequestBody(); body.withClassifierMode(true); body.withClassifierId("3bed12e0-7c1e-11ed-9bdb-0255ac10009d"); body.withImage("/9j/4AAQSkZJRgABAgEASABIAAD/4RFZRXhpZgAATU0AKgAAAA..."); request.withBody(body); try { RecognizeCustomTemplateResponse response = client.recognizeCustomTemplate(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()); } } }
- 传入自定义模板OCR的图片的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 RecognizeCustomTemplateSolution { 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(); RecognizeCustomTemplateRequest request = new RecognizeCustomTemplateRequest(); CustomTemplateRequestBody body = new CustomTemplateRequestBody(); body.withClassifierMode(true); body.withClassifierId("3bed12e0-7c1e-11ed-9bdb-0255ac10009d"); body.withUrl("https://BucketName.obs.myhuaweicloud.com/ObjectName"); request.withBody(body); try { RecognizeCustomTemplateResponse response = client.recognizeCustomTemplate(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()); } } }
- 传入自定义模板OCR的图片的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 = RecognizeCustomTemplateRequest() request.body = CustomTemplateRequestBody( classifier_mode=True, classifier_id="3bed12e0-7c1e-11ed-9bdb-0255ac10009d", image="/9j/4AAQSkZJRgABAgEASABIAAD/4RFZRXhpZgAATU0AKgAAAA..." ) response = client.recognize_custom_template(request) print(response) except exceptions.ClientRequestException as e: print(e.status_code) print(e.request_id) print(e.error_code) print(e.error_msg)
- 传入自定义模板OCR的图片的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 = RecognizeCustomTemplateRequest() request.body = CustomTemplateRequestBody( classifier_mode=True, classifier_id="3bed12e0-7c1e-11ed-9bdb-0255ac10009d", url="https://BucketName.obs.myhuaweicloud.com/ObjectName" ) response = client.recognize_custom_template(request) print(response) except exceptions.ClientRequestException as e: print(e.status_code) print(e.request_id) print(e.error_code) print(e.error_msg)
- 传入自定义模板OCR的图片的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.RecognizeCustomTemplateRequest{} classifierModeCustomTemplateRequestBody:= true classifierIdCustomTemplateRequestBody:= "3bed12e0-7c1e-11ed-9bdb-0255ac10009d" imageCustomTemplateRequestBody:= "/9j/4AAQSkZJRgABAgEASABIAAD/4RFZRXhpZgAATU0AKgAAAA..." request.Body = &model.CustomTemplateRequestBody{ ClassifierMode: &classifierModeCustomTemplateRequestBody, ClassifierId: &classifierIdCustomTemplateRequestBody, Image: &imageCustomTemplateRequestBody, } response, err := client.RecognizeCustomTemplate(request) if err == nil { fmt.Printf("%+v\n", response) } else { fmt.Println(err) } }
- 传入自定义模板OCR的图片的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.RecognizeCustomTemplateRequest{} classifierModeCustomTemplateRequestBody:= true classifierIdCustomTemplateRequestBody:= "3bed12e0-7c1e-11ed-9bdb-0255ac10009d" urlCustomTemplateRequestBody:= "https://BucketName.obs.myhuaweicloud.com/ObjectName" request.Body = &model.CustomTemplateRequestBody{ ClassifierMode: &classifierModeCustomTemplateRequestBody, ClassifierId: &classifierIdCustomTemplateRequestBody, Url: &urlCustomTemplateRequestBody, } response, err := client.RecognizeCustomTemplate(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。
状态码
状态码 |
描述 |
---|---|
200 |
成功响应示例 |
400 |
失败响应示例 |
状态码请参见状态码。
错误码
错误码请参见错误码。