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Detects text in the input document. Amazon Textract can detect lines of text and the
words that make up a line of text. The input document must be in one of the following
image formats: JPEG, PNG, PDF, or TIFF. DetectDocumentText returns the detected
text in an array of Block objects.
Each document page has as an associated Block of type PAGE. Each PAGE Block
object is the parent of LINE Block objects that represent the lines of detected
text on a page. A LINE Block object is a parent for each word that makes up
the line. Words are represented by Block objects of type WORD.
DetectDocumentText is a synchronous operation. To analyze documents asynchronously,
use StartDocumentTextDetection.
For more information, see Document Text Detection.
This is an asynchronous operation using the standard naming convention for .NET 4.5 or higher. For .NET 3.5 the operation is implemented as a pair of methods using the standard naming convention of BeginDetectDocumentText and EndDetectDocumentText.
Namespace: Amazon.Textract
Assembly: AWSSDK.Textract.dll
Version: 3.x.y.z
public virtual Task<DetectDocumentTextResponse> DetectDocumentTextAsync( DetectDocumentTextRequest request, CancellationToken cancellationToken )
Container for the necessary parameters to execute the DetectDocumentText service method.
A cancellation token that can be used by other objects or threads to receive notice of cancellation.
| Exception | Condition |
|---|---|
| AccessDeniedException | You aren't authorized to perform the action. Use the Amazon Resource Name (ARN) of an authorized user or IAM role to perform the operation. |
| BadDocumentException | Amazon Textract isn't able to read the document. For more information on the document limits in Amazon Textract, see limits. |
| DocumentTooLargeException | The document can't be processed because it's too large. The maximum document size for synchronous operations 10 MB. The maximum document size for asynchronous operations is 500 MB for PDF files. |
| InternalServerErrorException | Amazon Textract experienced a service issue. Try your call again. |
| InvalidParameterException | An input parameter violated a constraint. For example, in synchronous operations, an InvalidParameterException exception occurs when neither of the S3Object or Bytes values are supplied in the Document request parameter. Validate your parameter before calling the API operation again. |
| InvalidS3ObjectException | Amazon Textract is unable to access the S3 object that's specified in the request. for more information, Configure Access to Amazon S3 For troubleshooting information, see Troubleshooting Amazon S3 |
| ProvisionedThroughputExceededException | The number of requests exceeded your throughput limit. If you want to increase this limit, contact Amazon Textract. |
| ThrottlingException | Amazon Textract is temporarily unable to process the request. Try your call again. |
| UnsupportedDocumentException | The format of the input document isn't supported. Documents for operations can be in PNG, JPEG, PDF, or TIFF format. |
.NET:
Supported in: 8.0 and newer, Core 3.1
.NET Standard:
Supported in: 2.0
.NET Framework:
Supported in: 4.5 and newer