# AI Document Understanding: Layout Parsing, Structured Extraction, and Intelligent Document Processing
Status: public
Confidence: medium (0.83) (verified)
Last verified: 2026-05-28
Generation: ai_structured

## TL;DR
Document understanding turns scanned pages, forms, and PDFs into machine-readable structure. The field spans layout-aware models, OCR-free vision-language models, and production document extraction services.

## Core Explanation
Traditional pipelines separate layout analysis, OCR, and information extraction. LayoutLM-style models add document geometry to text representations, while Donut-style systems try to predict structured outputs directly from the page image. Commercial document AI services package these capabilities for forms, tables, handwriting, and document text extraction.

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