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Hi, I was following the Github Pages Documentation and I can't grasp how to do this.
I do the following. Post method to solr that updates the file via JSON {
"id": "1",
"ocr_text": ???
}Thanks for this amazing plugin! |
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Answered by
jbaiter
Jun 29, 2021
Replies: 1 comment 4 replies
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Hey @paroar, sorry for responding so late, didn't see the thread in the Discussions tab! The answer is pretty simple, you just put the raw OCR markup into the field :-) So let's say you have some hOCR, your document would look like this: {
"id": "1",
"ocr_text": "<html><body><div class=\"ocr_page\">...</div></body></html>",
}And that's it, the plugin will extract the text from the markup for indexing and use the stored markup for highlighting. Hope that answers your questions! Do you have suggestions on how this could be made clearer in the documentation? |
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4 replies
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Hi, I will try it and let you know Yes, I have a suggestion. You could do a small example, like the above, at Indexing. I think that would clear doubts about how to use the plugin for new folks like me. Many thanks! |
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Hi again! I've been trying it without luck, I'm getting things wrong. I'm putting my alto markup directly as a string, but I'm getting an Exception (Could not parse pointer) {
"id": "1",
"ocr_text": "<?xml version=\"1.0\" encoding=\"UTF-8\"?><alto xmlns=\"http://www.loc.gov/standards/alto/ns-v3#\" xmlns:xlink=\"http://www.w3.org/1999/xlink\" xmlns:xsi=\"http://www.w3.org/2001/XMLSchema-instance\" xsi:schemaLocation=\"http://www.loc.gov/standards/alto/ns-v3# http://www.loc.gov/alto/v3/alto-3-0.xsd\"><Description><MeasurementUnit>pixel</MeasurementUnit><sourceImageInformation><fileName>file:\\CERV5V.1\jpg\CERV5V.1_00001.jpg</fileName></sourceImageInformation><OCRProcessing ID=\"OCR_0\"><ocrProcessingStep><processingSoftware><softwareCreator>MD</softwareCreator><softwareName>Tesseract OCR</softwareName><softwareVersion>v5.0.0-alpha.20210506</softwareVersion></processingSoftware></ocrProcessingStep></OCRProcessing></Description><Layout><Page WIDTH=\"3944\" HEIGHT=\"2415\" PHYSICAL_IMG_NR=\"0\" ID=\"CERV5V.1_00001\"><PrintSpace HPOS=\"0\" VPOS=\"0\" WIDTH=\"3944\" HEIGHT=\"2415\"><ComposedBlock ID=\"cblock_0\" HPOS=\"1755\" VPOS=\"730\" WIDTH=\"8\" HEIGHT=\"425\"><TextBlock ID=\"block_0\" HPOS=\"1755\" VPOS=\"730\" WIDTH=\"8\" HEIGHT=\"425\"><TextLine ID=\"line_0\" HPOS=\"1755\" VPOS=\"730\" WIDTH=\"8\" HEIGHT=\"425\"><String ID=\"string_0\" HPOS=\"1755\" VPOS=\"730\" WIDTH=\"8\" HEIGHT=\"425\" WC=\"0.95\" CONTENT=\"Hello\" /></TextLine></TextBlock></ComposedBlock></PrintSpace></Page></Layout></alto>"
}
The xml file, readable format <?xml version="1.0" encoding="UTF-8"?>
<alto xmlns="http://www.loc.gov/standards/alto/ns-v3#" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.loc.gov/standards/alto/ns-v3# http://www.loc.gov/alto/v3/alto-3-0.xsd">
<Description>
<MeasurementUnit>pixel</MeasurementUnit>
<sourceImageInformation>
<fileName>file:\\CERV5V.1\jpg\CERV5V.1_00001.jpg</fileName>
</sourceImageInformation>
<OCRProcessing ID="OCR_0">
<ocrProcessingStep>
<processingSoftware>
<softwareCreator>MD</softwareCreator>
<softwareName>Tesseract OCR</softwareName>
<softwareVersion>v5.0.0-alpha.20210506</softwareVersion>
</processingSoftware>
</ocrProcessingStep>
</OCRProcessing>
</Description>
<Layout>
<Page WIDTH="3944" HEIGHT="2415" PHYSICAL_IMG_NR="0" ID="CERV5V.1_00001">
<PrintSpace HPOS="0" VPOS="0" WIDTH="3944" HEIGHT="2415">
<ComposedBlock ID="cblock_0" HPOS="1755" VPOS="730" WIDTH="8" HEIGHT="425">
<TextBlock ID="block_0" HPOS="1755" VPOS="730" WIDTH="8" HEIGHT="425">
<TextLine ID="line_0" HPOS="1755" VPOS="730" WIDTH="8" HEIGHT="425">
<String ID="string_0" HPOS="1755" VPOS="730" WIDTH="8" HEIGHT="425" WC="0.95" CONTENT="Hello" />
</TextLine>
</TextBlock>
</ComposedBlock>
</PrintSpace>
</Page>
</Layout>
</alto>Solr exception log Thanks! |
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Really sorry about this, I was mistaken in my previous answer. <charFilter class="de.digitalcollections.solrocr.lucene.filters.ExternalUtf8ContentFilterFactory" />With it removed it should work as expected! |
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Works like a charm! Thank you very much for your time! |
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Answer selected by
jbaiter
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Hey @paroar, sorry for responding so late, didn't see the thread in the Discussions tab!
The answer is pretty simple, you just put the raw OCR markup into the field :-)
So let's say you have some hOCR, your document would look like this:
{ "id": "1", "ocr_text": "<html><body><div class=\"ocr_page\">...</div></body></html>", }And that's it, the plugin will extract the text from the markup for indexing and use the stored markup for highlighting.
Hope that answers your questions! Do you have suggestions on how this could be made clearer in the documentation?