Version 0.4

New in version 0.4 (apart various bug fixes):

• support for xpdf language support package for language-specific fonts like Arabic, Chinese-simplified, Japanese, etc. they are pre-installed locally and portable

• refined line number detection and fixing a bug which could result in random missing numbers in the ALTO output

• update to xpdf-4.03

• fix issue with character spacing due to invalid rotation condition

• update dependencies and dependency install script

Version 0.3

New in version 0.3:

• line number detection: line numbers (typically added for review in manuscripts/preprints) are specifically identified and not anymore mixed with the rest of text content, they will be grouped in a separate block or, optionally, not outputted in the ALTO file (noLineNumbers option)

• removal of -blocks option, the block information are always returned for ensuring ALTO validation (<TextBlock> element)

• bug fixing on reading order

• fix possible incorrect XMax and YMax values at 0 on block coordinates having only one line

Version 0.2

New in version 0.2:

• support Unicode composition of characters
• generalize reading order to all blocks (it was limited to the blocks of the first page)
• use subscript/superscript text font style attribute
• use SVG as a format for vectorial images
• propagate unsolved character Unicode value (free Unicode range for embedded fonts) as encoded special character in ALTO (so-called "placeholder" approach)
• generate metadata information in a separate XML file (as ALTO schema does not support that)
• use the latest version of xpdf, version 4.00
• add cmake
• ALTO output is replacing custom Xerox XML format

Note: this released version was used for Grobid release 0.5.6