Amazon Textract - Developer Guide
Developer Guide
Amazon Textract
Copyright ? 2024 Amazon Web Services, Inc. and/or its affiliates. All rights reserved.
Amazon Textract
Amazon Textract: Developer Guide
Developer Guide
Copyright ? 2024 Amazon Web Services, Inc. and/or its affiliates. All rights reserved.
Amazon's trademarks and trade dress may not be used in connection with any product or service that is not Amazon's, in any manner that is likely to cause confusion among customers, or in any manner that disparages or discredits Amazon. All other trademarks not owned by Amazon are the property of their respective owners, who may or may not be affiliated with, connected to, or sponsored by Amazon.
Amazon Textract
Table of Contents
Developer Guide
What is Amazon Textract? .............................................................................................................. 1 First-Time Amazon Textract Users ............................................................................................................ 3 Working with AWS SDKs ............................................................................................................................. 3
How It Works ................................................................................................................................... 5 Detecting Text ............................................................................................................................................... 6 Analyzing Documents .................................................................................................................................. 7 Analyzing Invoices and Receipts ............................................................................................................. 10 Analyzing Identity Documents ................................................................................................................ 15 Input Documents ........................................................................................................................................ 17 Amazon Textract Response Objects ....................................................................................................... 18 Text Detection and Document Analysis Response Objects .......................................................... 18 Layout Response Objects .................................................................................................................... 49 Invoice and Receipt Response Objects ............................................................................................. 51 Identity Documentation Response Objects ..................................................................................... 54 Analyze Lending Response Objects .................................................................................................. 56 Item Location on a Document Page ...................................................................................................... 67 Bounding Box ......................................................................................................................................... 68 Polygon ................................................................................................................................................... 70 Using Analyze Lending for Document Classification and Extraction ............................................... 71 Custom Queries .......................................................................................................................................... 77
Getting Started .............................................................................................................................. 79 Step 1: Set Up a User ............................................................................................................................... 79 Sign up for an AWS account .............................................................................................................. 79 Create an administrative user ............................................................................................................ 80 Next Step ................................................................................................................................................ 81 Step 2: Set Up the AWS CLI and AWS SDKs ........................................................................................ 81 Download AWS CLI and SDK .............................................................................................................. 81 Granting Programmatic Access .......................................................................................................... 83 Next Step ................................................................................................................................................ 87 Step 3: Get Started Using the AWS CLI and AWS SDK API ............................................................... 87 Formatting the AWS CLI Examples ................................................................................................... 87
Processing Documents with Synchronous Operations ................................................................ 88 Calling Amazon Textract Synchronous Operations ............................................................................. 88 Request .................................................................................................................................................... 89
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Amazon Textract
Developer Guide
Using an adapter .................................................................................................................................. 91 Response ................................................................................................................................................. 92 Detecting Document Text ...................................................................................................................... 163 Analyzing Document Text ...................................................................................................................... 177 Analyzing Invoice and Receipt Documents ......................................................................................... 194 Analyzing ID Documents ........................................................................................................................ 207 Processing Documents with Asynchronous Operations ............................................................ 215 Calling Asynchronous Operations ........................................................................................................ 216 Starting Text Detection ..................................................................................................................... 217 Getting the Completion Status of an Amazon Textract Analysis Request .............................. 219 Getting Amazon Textract Text Detection Results ........................................................................ 221 Using an adapter ................................................................................................................................ 230 Configuring Asynchronous Operations ................................................................................................ 231 Giving Amazon Textract Access to Your Amazon SNS Topic ..................................................... 232 Permissions for Output Configuration ........................................................................................... 233 Detecting or Analyzing Text in a Multipage Document ................................................................... 235 Performing Asynchronous Operations ........................................................................................... 236 Using the Analyze Lending Workflow ................................................................................................. 267 Performing Asynchronous Lending Analysis ................................................................................. 268 Amazon Textract Results Notification ................................................................................................. 274 Handling Throttled Calls and Dropped Connections ................................................................ 277 Custom Queries ........................................................................................................................... 283 Creating adapters ..................................................................................................................................... 285 Create adapter .................................................................................................................................... 285 Get adapter .......................................................................................................................................... 286 List adapters ........................................................................................................................................ 286 Update adapter ................................................................................................................................... 287 Delete adapter .................................................................................................................................... 288 Preparing training and testing datasets ............................................................................................. 288 Training adapter versions ....................................................................................................................... 292 Create adapter version ...................................................................................................................... 292 Evaluating and improving your adapters ........................................................................................... 293 List adapter versions .......................................................................................................................... 294 Get adapter version ........................................................................................................................... 295 Delete adapter version ...................................................................................................................... 296 Debugging training failures ................................................................................................................... 297
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Amazon Textract
Developer Guide
Inference .................................................................................................................................................... 300 Custom Queries tutorial ......................................................................................................................... 301
Prerequisites ........................................................................................................................................ 302 Create an adapter ............................................................................................................................... 302 Dataset creation .................................................................................................................................. 303 Annotation and verification ............................................................................................................. 306 Training ................................................................................................................................................. 310 Evaluating adapter performance .................................................................................................... 311 Improving an adapter ........................................................................................................................ 313 Inference ............................................................................................................................................... 313 Adapter management ........................................................................................................................ 314 Copying adapters ..................................................................................................................................... 315 Best Practices for Amazon Textract ........................................................................................... 316 Provide an Optimal Input Document .................................................................................................. 316 Use Confidence Scores ............................................................................................................................ 316 Consider Using Human Review ............................................................................................................. 317 Best Practices for Queries ...................................................................................................................... 317 Example Queries ................................................................................................................................. 317 General Best Practices for Queries ................................................................................................. 317 Extracting Cells from Tables ............................................................................................................ 317 Extracting Tables using Queries ...................................................................................................... 318 Long Answers ...................................................................................................................................... 318 Passing Only Hints ............................................................................................................................. 318 General Phrasing of Questions ........................................................................................................ 318 Setting up Pages for Queries ........................................................................................................... 319 Best Practices for Bulk Document Uploader ...................................................................................... 320 Limits ..................................................................................................................................................... 321 Best practices for Amazon Textract Custom Queries ....................................................................... 322 Tutorials ....................................................................................................................................... 324 Prerequisites .............................................................................................................................................. 324 Extracting Key-Value Pairs from a Form Document ......................................................................... 325 Exporting Tables into a CSV File .......................................................................................................... 328 Detecting text with an AWS Lambda function .................................................................................. 338 Step 1: Create an AWS Lambda function (console) ..................................................................... 339 Step 2: (Optional) Create a layer (console) ................................................................................... 341 Step 3: Add Python code (console) ................................................................................................ 342
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