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Gets the text detection results of a Amazon Rekognition Video analysis started by StartTextDetection.
Text detection with Amazon Rekognition Video is an asynchronous operation. You start
text detection by calling StartTextDetection which returns a job identifier
(JobId) When the text detection operation finishes, Amazon Rekognition publishes
a completion status to the Amazon Simple Notification Service topic registered in
the initial call to StartTextDetection. To get the results of the text detection
operation, first check that the status value published to the Amazon SNS topic is
SUCCEEDED. if so, call GetTextDetection and pass the job identifier
(JobId) from the initial call of StartLabelDetection.
GetTextDetection returns an array of detected text (TextDetections)
sorted by the time the text was detected, up to 100 words per frame of video.
Each element of the array includes the detected text, the precentage confidence in the acuracy of the detected text, the time the text was detected, bounding box information for where the text was located, and unique identifiers for words and their lines.
Use MaxResults parameter to limit the number of text detections returned. If there
are more results than specified in MaxResults, the value of NextToken
in the operation response contains a pagination token for getting the next set of
results. To get the next page of results, call GetTextDetection and populate
the NextToken request parameter with the token value returned from the previous
call to GetTextDetection.
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 BeginGetTextDetection and EndGetTextDetection.
Namespace: Amazon.Rekognition
Assembly: AWSSDK.Rekognition.dll
Version: 3.x.y.z
public virtual Task<GetTextDetectionResponse> GetTextDetectionAsync( GetTextDetectionRequest request, CancellationToken cancellationToken )
Container for the necessary parameters to execute the GetTextDetection service method.
A cancellation token that can be used by other objects or threads to receive notice of cancellation.
| Exception | Condition |
|---|---|
| AccessDeniedException | You are not authorized to perform the action. |
| InternalServerErrorException | Amazon Rekognition experienced a service issue. Try your call again. |
| InvalidPaginationTokenException | Pagination token in the request is not valid. |
| InvalidParameterException | Input parameter violated a constraint. Validate your parameter before calling the API operation again. |
| ProvisionedThroughputExceededException | The number of requests exceeded your throughput limit. If you want to increase this limit, contact Amazon Rekognition. |
| ResourceNotFoundException | The resource specified in the request cannot be found. |
| ThrottlingException | Amazon Rekognition is temporarily unable to process the request. Try your call again. |
.NET:
Supported in: 8.0 and newer, Core 3.1
.NET Standard:
Supported in: 2.0
.NET Framework:
Supported in: 4.5 and newer