Add parallel processing to OCR text extraction of full documents#124
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ntodd wants to merge 2 commits intodocumentcloud:masterfrom
Open
Add parallel processing to OCR text extraction of full documents#124ntodd wants to merge 2 commits intodocumentcloud:masterfrom
ntodd wants to merge 2 commits intodocumentcloud:masterfrom
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added 2 commits
December 18, 2014 17:20
Use GNU Parallel if installed to parallelize tesseract OCR on full document text extraction. If Parallel is not installed, use previous behavior.
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I like this a lot.. Will test and observe, thanks for the commit |
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This is a great idea. |
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Leverage the GNU Parallel tool to OCR multiple pages in parallel. If Parallel is installed, a full document extraction will generate an image for each page and then spawn a tesseract process for each available core. If Parallel is not installed or a subset of pages are indicated, the old behavior will be used. This speeds up OCR processing significantly on multi-core machines.
With a bit more work, this could be leveraged by the other OCR code paths.