✍️ Estonian Text Recognition
Collection
A guide to recognising handwritten or typewritten Estonian text from digitised document images. • 6 items • Updated
Datasets:
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Dataset of Text Region and Line Coordinates in Handwritten Estonian Documents
Dataset Description
This dataset contains coordinate annotations for Estonian historical documents, extracted from Transkribus exports. It includes full page images with precise coordinate information for text regions and text lines, designed for text detection, layout analysis, and document structure understanding tasks.
📊 Dataset Summary
- Total Examples: 7,664 images
- Language: 🇪🇪 Estonian
- Dataset Size: ~20 GB
- Task: Text Detection, Layout Analysis, Document Structure Analysis
- Domain: Historical Documents, Archival Materials
🗂️ Dataset Structure
📋 Features
- image: Full page image (PIL Image)
- text_regions: Coordinate string for text region polygons in format:
region_1:((x1,y1),(x2,y2),...),region_2:((x1,y1),...) - text_lines: Coordinate string for text line polygons in format:
line_1:((x1,y1),(x2,y2),...),line_2:((x1,y1),...) - document_title: Source document name
- AIS_reference: AIS file reference number
- page_number: Location of frame in file
🎯 Coordinate Format
The coordinates are stored as simple, readable strings:
Text Regions: Each region is numbered and contains polygon points
region_1:((704,968),(704,2814),(2764,2814),(2764,968)),region_2:((3349,897),(3349,3256),(5284,3256),(5284,897))
Text Lines: Each line is numbered and contains polygon points
line_1:((237,349),(400,352),(480,405),(500,420)),line_2:((255,483),(379,469),(420,485),(445,500))
🔧 Technical Details
Coordinate System
- Coordinates are in pixel space relative to the full page image
- Origin (0,0) is at top-left corner
- Polygons are stored as sequences of (x,y) points
- Text regions typically have 4 points (rectangles)
- Text lines may have variable number of points following text baseline
Data Processing
- Extracted from Transkribus PAGE XML format
- Coordinate precision maintained from original annotations
- Images converted to RGB format for consistency
- Document titles extracted from Transkribus folder structure
⚠️ Data Quality Notes
- Image quality varies based on historical document preservation
- Some pages may have irregular text layouts due to historical formatting
- Coordinate accuracy depends on original Transkribus annotation quality
- Text regions may overlap or have complex shapes
🚫 Limitations
- Limited to Estonian language documents
- Historical document layouts may not represent modern document structures
- Dataset size is focused on quality over quantity
- Coordinate formats are optimised for polygon representation
- Some documents may have incomplete coordinate annotations
📞 Contact
Depending on the nature of your question, please contact one of the following:
- Content of dataset: @svlp or @LudwigRoine
- Format or anything technical: @paulpall
- For everything else: the National Archives of Estonia.
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