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By downloading the Aletheia software you agree to the following end-user licence agreement.
Download version 4.1.1066 (Lite/Pro, Windows 64 bit)
Alternative download for 4.1.1066 (Lite/Pro, Windows 64 bit)
Download version 4.0.1036 (Lite/Pro, Windows 64 bit)
Aletheia Lite offers essential features for viewing and editing page layout files. It supports various file formats including PAGE, ALTO and ABBYY FineReader XML. It comes with a free and unlimited licence for registered users (personal research).
Aletheia Pro is a complete document analysis system offering a wide range of fully automated and assistive features including page recognition and OCR (Tesseract). The complete product is available to try for free for a limited period. Email us for extended academic use.
Features | Lite | Pro |
File Import | ||
PAGE | ||
ALTO, FineReader XML, hOCR | ||
File Export | ||
PAGE | ||
Text, Screenshot, Gamera XML, Bitonal image | - | |
Image Processing | ||
Binarisation (Manual, Otsu, Sauvola) | - | |
Noise removal | - | |
Manual editing | - | |
Manual Page Content Editing | ||
Rectangle and polygon tools | ||
Content attributes (properties) | ||
Reading order | ||
Layers | ||
Text content (transcription, editing) | ||
Text line baselines | - | |
Semi-Automated Page Content Editing | ||
Assistive region creation ("shrink-wrapping") | - | |
Auto-adjusting to child/parent content objects | - | |
Merging, splitting of regions | - | |
Text propagation to/from child content objects | - | |
Assisted text line, word, glyph creation | - | |
Fully Automated Tools | ||
Full page analysis and recognition (Tesseract) | - | |
OCR of individual page content objects (Tesseract) | - | |
Page border detection | - | |
Dewarping | ||
Grid creation/editing | - | |
Grid import/export | - | |
Image dewarping | - | |
Customisation | ||
Task-specific toolbars | ||
Thumbnail view | - | |
Styles and highlighting | - | |
Additional Features | ||
Page metadata | ||
Page content statistics | - | |
Quality assurance | - | |
Experimental tools | ||
Region detection (segmentation) | - | |
Baseline detection | - | |
Feature extraction | - | |
Typewritten OCR | - |