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Optical Character Recognition
Optical Character Recognition
- What's New
- Function Overview
- Product Bulletin
- Service Overview
-
Billing
- Billing Overview
- Billing Modes
- Billing Items
- Billing Examples
- Billing Mode Changes
- Renewing Subscriptions
- Bills
- Arrears
- Billing Termination
- Cost Management
-
Billing FAQ
- Why Do I Get Additional Charges or Arrears After Purchasing a Package?
- Why Can I Still Call the Service and Incur Arrears When My Account Balance Is Zero?
- Why Do I Get Additional Charges or Arrears After Unsubscribing from an OCR Service?
- Can I Refund a Package After I Buy It?
- How Is Billing Handled When a Package Is Used Up? And How Can I Check the Remaining Quota and Receive Alerts for My Package?
- How Does a Member Account Use a Package Purchased by an Enterprise Master Account?
- What Is Fee Deduction Order for Multiple Packages?
- What are Grace Period and Retention Period?
- What Is Considered Valid Billing for OCR?
- Can Different API Packages Be Shared?
- Can OCR Be Charged by Project?
- Getting Started
- User Guide
- SDK Reference
- API Reference
-
FAQs
- Subscription
-
Token-based Authentication
- What Are the Username, Domain Name, and Project Name in the Token Message Body?
- Why Is the Error Message "The account is locked." Displayed?
- Why Is the Error Message "The username or password is wrong." Displayed?
- Why Does the Token Retrieval Process Return a 401 Status Code?
- Why Does the Token Fail to Be Obtained When I Use Postman to Call an ORC API?
- Why Don't I Have Programming Access Permissions?
- Why Does the Header Overflow When I Use Postman to Call an OCR API?
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API
- How Do I View the API Usage?
- Why Is the Actual Number of API Calls Inconsistent with the Record Displayed on the Management Console?
- Does OCR Support Batch Processing?
- Can the OCR Results Be Converted into Word, TXT, or PDF Files?
- How Do I Obtain the Base64 Code of an Image?
- What Is the Number of Concurrent OCR API Calls?
- How Do I Use OCR APIs?
- Can the Region Where OCR Is Called Be Different from the Region Where OBS Resources Are Located?
- Can the Input Data of OCR Be Stored Locally?
- How Do I Improve the Recognition Speed?
- How Do I Convert a PDF to an Image?
- Can OCR Read Images from Non-Huawei Cloud Storage?
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SDK
- Do OCR SDKs Need to Be Purchased?
- Do OCR SDKs Need Maven to Manage Dependency Packages?
- How Do I Change the Response Type in Returned Results?
- How Can I Fix an SSL Configuration Error?
- How Can I Fix a "connect timed out" Error?
- Why Does the Project ID Fail to Be Obtained?
- What Should I Do if I Forget My AK and SK?
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Error Code
- Why Do I Fail to Call an OCR API?
- How Do I Handle the Error APIG.0301?
- How Do I Handle the Error APIG.0201?
- How Do I Handle the Error APIG.0101?
- How Do I Handle the Error APIG.0106?
- How Do I Handle the Error APIG.0308?
- How Do I Handle the Error ModelArts.0212?
- How Do I Handle the Error ModelArts.4603 or ModelArts.4704?
- How Do I Handle the Error ModelArts.4204?
- Permissions
- Data Security and Privacy
- Regions and AZs
- General Consulting
- Videos
- Glossary
- More Documents
- General Reference
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Overview
You can debug API calls using Postman or SDK. This involves subscribing to a service, configuring the environment, authenticating, and constructing a request to call the service.
- Subscribing to a service: includes registration and login, IAM account creation (optional), and service subscription. For details, see Subscribing to an OCR Service.
- Configuring the environment: You can choose to download Postman or download an SDK.
- Authenticating: You can choose Token-based Authentication (Postman environment) or AK/SK-based Authentication (SDK environment). Select an authentication mode based on the environment configured in step 2.
- Constructing a request. For details about how to construct a request in the Postman environment, see Making an API Request. For details about how to call an API in an SDK environment, see Optical Character Recognition SDK Reference.
Apart from the preceding two methods, you can also call APIs through API Explorer online debugging. The procedure is as follows:
- The API Explorer page is displayed after a service is subscribed to by referring to Subscribing to an OCR Service.
- Choose the subscribed service and the corresponding region for the service.
- In the Body area, set image or url. Set other parameters based on site requirements. For details about the parameters, refer to the content displayed on the Documentation tab on the right of the page.
- Click Debug and check the calling result on Debugging Result on the right.
Figure 1 API Explorer online debugging
Parent Topic: Calling APIs
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