/MediaBox [0 0 595.276 841.89] Installation. /CreationDate (D:20100401113030+02'00') 2 0 obj >> /MediaBox [0 0 595.276 841.89]
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I just want the results accessible at the public API, if available.Is there a high-level description of the internal processing pipeline of tesseract somewhere?It seems, that the table detection works perfectly:But then, the contents of the table are just processed as any other text, which doesn't make sense to me:So, this means that the data is actually there, but it's not actually used.Hi, I'm thinking about writing the API / structure part necessary to hold and access the otherwise lost information (as described by I'm thinking about writing the API / structure part necessary to hold and access the otherwise lost information (as described by Would a commit from a tesseract-team outsider be acceptable?Whether a specific PR will be accepted or rejected will depend on it's code quality.Not officially, but since most of the code comes from Google, it's a good idea to use Nice, I will start this and a traceback and possible fix of I suggest that you provide an example that demonstrates the use of the new API.I don't know which one is better, it depends on what a block means to the engine.
At least at a word level, it is easy to fix them to a single table cell.I don't know exactly how the engine actually works, but I imagine that there's a layout analysis that comes first, dividing the image into blocks of different types (text, image, table, etc). << Without using lists in the table cells, that hold pointers to the contained words, this could also become inefficient.And then the api user can decide what to do with that.Introducing a structure like troplin proposed seems to be difficult, because a paragraph or a textline (even words) can go over table cell boundaries. /StructParents 0 /MediaBox [0 0 595.276 841.89] /Filter /FlateDecode /Width 320 endobj �[2{��o �O}�����m�glۣ�M�% 8�X�����^h?\mm
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This paper presents a practical algorithm for table detection that works with a high accuracy on documents with varying layouts (company reports, newspaper articles, magazine pages, . /Type /Catalog >> /Parent 4 0 R /LW 1 An open source implementation of the algorithm is provided as part of the Tesseract OCR engine. /Annots [23 0 R 24 0 R 25 0 R 26 0 R 27 0 R 28 0 R 29 0 R 30 0 R 31 0 R 32 0 R] endobj >> /MediaBox [0 0 595.276 841.89] /Kids [6 0 R 7 0 R 8 0 R 9 0 R 10 0 R 11 0 R 12 0 R] Thanks for all the pointers. x��yp��}�h i�f&i2�2S�4d�IҤM�I�v��1M�6�N2iC�M�dhJ��Ʒ�|��`cc|b�ԧ$�>�u�CƦHZ�m�p��:˫Z��~�Ϯ���}w�w?�~��_�R Ѕ7����������f���������R�:f���z����\i�t�*\�n��]߸�Kw�7�Q63�p�:r�d�����k�-�U����t���!�z��1�l�k�k��͍h�mlm=�N���.l��6�k��j���ce�p��p�� ? So adding table information on this level would result into every word holding the information about every table.It seems that with my suggestion you need to place the vector of tables inI'm sorry, I wasn't able to find the time necessary to implement the necessary changes. endobj /Type /Page /Resources 50 0 R /Resources 43 0 R /ML 4 /Annots [51 0 R] /Parent 5 0 R
/ModDate (D:20100401113030+02'00') /Type /Pages >> endobj 12 0 obj /ProcSets [/PDF /Text /ImageB /ImageC /ImageI] endobj >> /Contents 34 0 R endobj /Resources << endobj GitHub is home to over 50 million developers working together to host and review code, manage projects, and build software together.By clicking “Sign up for GitHub”, you agree to our There is already some table detection mechanism in tesseract but unfortunately, there is seems to be no possibility to access the table structure at the API.This could be done only minimal changes to the API, just by expanding the Are you able to send PR for this including simple test case (similar to I assume tesseract handle tables in one of these two ways:The table I'm testing with seems to be recognized as a single block (which makes sense IMO).If this reflects the internal table structure, that would mean that the table detection is really bad and I can just disregard it.I'm going to investigate a bit more, once I've successfully set up the debug viewer.Tesseract considers any table it can recognize as block, so it's neither of the cases.They published a paper about the table detection module.Related issue - How to detect table region after the update in Tablefind.cpp? <<
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