ocr-xsl

XSLT functions to transform common OCR formats

• Format Cheatsheet
• Shared concepts
  • OCR formats
  • Box coordinates
• Function reference
  • ocr.bbox.xsl
    • ocr:bbox($format, $element, $coord)
    • ocr:hocr-bbox($element, $coord)
    • ocr:abbyy-bbox($slement, $coord)
    • ocr:alto-bbox($slement, $coord)
  • ocr.image.xsl
    • ocr:image($format, $element)
    • ocr:hocr-image($element)

Format Cheatsheet

Check out OCR-Format-Comparison for a concise comparison of hOCR, ALTO, and ABBYY.

Shared concepts

OCR formats

• hocr
• alto
• abbyy

Box coordinates

• left
• right
• top
• bottom
• width
• height

Function reference

ocr.bbox.xsl

• source

Retrieve the bounding box of an element

ocr:bbox($format, $element, $coord)

• $format: A valid OCR format
• $element: The element to bound
• $coord: A valid box coordinate

ocr:hocr-bbox($element, $coord)

• $element: The element to bound
• $coord: A valid box coordinate

ocr:abbyy-bbox($slement, $coord)

• $element: The element to bound
• $coord: A valid box coordinate

ocr:alto-bbox($slement, $coord)

• $element: The element to bound
• $coord: A valid box coordinate

ocr.image.xsl

• source

Retrieve the image for an element

ocr:image($format, $element)

• $format: A valid OCR format
• $element: The element with image

ocr:hocr-image($element)

• $element: The element with image