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gImageReader is a simple GTK+ front-end to tesseract-ocr . where input.pdf is the name of the input file and output.pdf the output file. Open Ubuntu software center. Search for tesseract.
You'll need ghostscript, the tesseract open-source OCR engine, and one or more language sets for tesseract. user@box:~$ apt-cache search tesseract tesseract-ocr - Command line OCR tool tesseract-ocr-deu - tesseract-ocr language files for German text tesseract-ocr-deu-f - tesseract-ocr language files for the German
19 Mar 2014 I found a rather good article on the Ubuntu Community Help Wiki — OCR – Optical Character Recognition — which provides a few good options. I took a quick look at gscan2pdf since it sounded promising: A simple GUI tool that SWMBO could use to run OCR on a PDF, just the ticket. Except that the results
pdfocr uses OCR (optical charater recognition) to extract text from scanned PDF files, and adds the recognized text back to the PDF file. This makes the resulting PDF files searchable. It can use both the tesseract and cuneiform OCR engines.
#!/bin/bash # Run OCR on a multi-page PDF file and create a new pdf with the # extracted text in hidden layer. Requires cuneiform, hocr2pdf, gs. # Usage: ./dwim.sh input.pdf output.pdf set -e input="$1" output="$2" tmpdir="$(mktemp -d)" # extract images of the pages (note: resolution hard-coded) gs
5 Aug 2008 How To: OCR any PDF file. Step 1: Install needed packages. sudo apt-get install tesseract-ocr tesseract-ocr-eng xpdf-reader xpdf imagemagick xpdf-utils. Step 2: See if you actually need ocr. xpdf-utils (which you just installed) provides a pdftotext utility: Step 3: OCR'd.
4 May 2017 Tesseract is one of the most powerful open source OCR engine available today. OCR stands for Optical Character Recognition. This is the process of extracting texts from images. For example, consider the following image which has some text in it that has to be extracted out: The Output from the OCR
31 Dec 2015 Tesseract & PDFsandwich. Tesseract is the first and currently the only OCR engine for Linux that supports direct searchable PDF output (starting from version 3.03). The only problem is that it only accepts image input. So you can't feed it a PDF document. You can install it on APT based Linux (like Ubuntu)
Aufteilung einer mehrseitigen PDF-Datei in Einzelseiten (bei Bedarf, via pdftk ). Extrahieren der Bild-Daten mit pdfimages. Ausfuhrung der Texterkennung mittels tesseract-ocr, ggf. Cuneiform-Linux oder OCRopus (Ausgabe im hOCR-Format). Einfugen des Textes in die PDF-Datei mit hocr2pdf. Wiederzusammenfuhrung der
31 Mar 2015 Contents. OCR - Optical Character Recognition; Available OCR tools. OCRFeeder; Tesseract; CuneiForm. OCR on a Multi Page PDF. gscan2pdf; OCRFeeder; pdfocr. Further Reading
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