Questions tagged [ocr]
Optical character recognition (OCR) is the process of converting images of text to text that can be manipulated by word processors etc.
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How to extract text with OCR from a PDF on Linux?
How do I extract text from a PDF that wasn't built with an index? It's all text, but I can't search or select anything. I'm running Kubuntu, and Okular doesn't have this feature.
36
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4
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How to create PDF with scanned pages but selectable text?
Today I recieved a PDF from our supplier and it contained several printed and scanned pages with signatures etc. I opened it in Acrobat Reader DC. But to my surprise the text from the evidently ...
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6
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Batch-OCR many PDFs
This has been discussed a year ago here:
Batch OCR for many PDF files (not already OCRed)?
Is there any way to batch OCR PDFs that haven't been already OCRed? This is, I think, the current state of ...
23
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3
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Blurry text in PDF
I have a pdf that has blurry text. The text itself is readable but causes lots of strain.
This is an example of the text.
Is there a way to clear it up?
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11
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How to remove OCR from a PDF?
I have been searching Google for some time but cannot find an answer to my question.
I have unwanted layers of OCR in a document that I recently scanned with Adobe Acrobat. It has not been OCRed ...
19
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8
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How can I convert scanned images as PDF to a searchable PDF file? [closed]
I have a PDF of a scanned book.
I'm looking for a free software that will perform OCR and then provide an option to save it as a PDF or document again.
Is there one?
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3
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How can I identify fonts from an image? [closed]
Many times I come across bitmaps with nothing but text paragraphs, so I was looking for a way to identify the font used, the paragraph alignment, line spacing and color, bold, italics.
Would an OCR ...
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Extract OCR text from Evernote
Evernote does OCR on the images you save to it. Is there a way to get the full text equivalent for an image in Evernote, or is the OCR only for searching?
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Enable OCR in Greenshot
I run Windows 10 with Microsoft Office professional Plus 2016 on my computer. Looks like MS OCR functionality is enabled in my system since OneNote is able to copy text from image.
But how to enable ...
13
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8
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Practical OCR solution for converting a large book to a digital format?
I was over by my grandparent's place this past weekend. My grandmother pulled out this giant (~1400 page) book of her family history going back to 1630 or so. Giant nerd that I am, I thought it would ...
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PDF has an extra blank in all words after running through Ghostscript
This PDF was produced by Abbyy Finereader 10:
http://ebooks.zeitr.org/from_abbyy.pdf
You can copy & paste the first sentence and get this (very good) text result:
Der »Bund Deutscher ...
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1
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How to analyze the space usage within pdf document?
I have this 7mb pdf that I made from 65 scanned B/W images. After OCR, the document becomes 32mb.
I have never seen text taking up so much space. (in theory 25mb should give me 25 million letters ...
10
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4
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Batch OCR for many PDF files (not already OCRed)? [closed]
I use Google Desktop Search (I am on Vista) and not all my PDF files are recognized in my archive folder. It is normal as "PDF files that contain scanned images" are not indexed ( http://desktop....
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3
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Good free OCR with GUI for correcting mistakes? (for Windows)
I've used SimpleOCR, which has a nice GUI for correcting mistakes. Unfortunately it makes a lot of mistakes! (and suffers other bugs and limitations)
On the other hand Tesseract is more accurate but ...
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3
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Can Acrobat 11 be made to do OCR using multiple CPU cores?
OCR processing takes time. Using multiple CPU cores would speed up processing. Acrobat 10 was not a multithreaded application. How about Acrobat 11? Does 11 by default do OCR using multiple CPU cores (...
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How do I Initiate an OCR scan in Microsoft Office Word 2010?
How do you kick off a scan and character recognition using Microsoft Office Word 2010 (Beta)?
I can't seem to find an option to scan the document in my scanner directly into a 2010 Word document.
I ...
8
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4
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Is there a utility to do OCR on images on the windows clipboard? [closed]
Sometimes, I find myself typing out a lot of text from a screen capture. Its quite tedious.
Is there an OCR (Optical Character Recognition) program out there that would allow me to quickly convert ...
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OCR Tesseract, Empty page error?
I compiled it from sources with leptonica.
This is a png image with transparent background, which I edited adding a blue color and still this error:
Tesseract Open Source OCR Engine v3.02.02 with ...
7
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7
answers
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Extracting text from a .PDF scanned book [closed]
I have a scanned a book in PDF format, but the quality is rather poor:
(The language is Romanian and it's a medical physiology book, in case you were wondering)
I want to extract text from the book (...
7
votes
3
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OCR for numbers with gray noisy background
I tried to run OCR on multiple scanned sheets with numbers like this image (All with same background, digits only):
But all trials failed!
I tried offline OCRs: gocr, tesseract and couple of online ...
7
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Understanding OCR options in Adobe Acrobat: "Searchable Image", "Searchable Image (Exact)", and "Editable Text and Images"
In Adobe Acrobat (I'm using Pro DC if that matters), there are three options for OCR:
"Searchable Image".
"Searchable Image (Exact)".
"Editable Text and Images".
What are the differences between ...
7
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2
answers
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How to leave pdf image unchanged while adding OCR to a pdf with pdfsandwich?
I am trying to add OCR to PDFs and am using pdfsandwich to do so. The problem is that pdfsandwich processes the image when doing OCR which changes what the document looks like.
Is there any way to ...
6
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1
answer
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Can a OCR confuse letter case?
Can a OCR sometimes confuse between letter case?
For example 't' interpreted as 'T' or 'r' as 'R' at some point?
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Is there Any OCR program that can handle non-Latin characters?
I'm looking for an OCR program that can work with hebrew characters. I'm open to using something on Mac or PC, but it needs to be a reliable program.
What are my options?
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How to recover pixelated text from JPEG image with Photoshop?
I've got a JPEG image with text on it (badly scanned document), which is hardly readable. I have already played around with the sharpen filters, contrast, levels and the color replacement tool, with ...
6
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2
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How to replaces images of text in PDFs with formatted text using OCR
I get a lot of PDFs from other people consisting of scanned old documents. Unfortunately, sometimes the text on the scans, though legible, looks grainy and is hard to read.
What I've been able to do ...
6
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3
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How to do OCR on a PDF document? [duplicate]
Possible Duplicate:
How to extract text with OCR from a PDF on Linux?
I have a few documents in English and Hebrew that I scanned in and converted to PDF format.
Is there some free or cheap ...
6
votes
1
answer
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OCR Image recognition plugin for firefox and chrome? [closed]
Sometimes i need to OCR images that I stumble upon on some webpages. I would like to know if there are any plugins for Firefox and Chrome that would allow me to upload desired image for processing on ...
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3
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Command-line OCR in Windows 7
What are some command-line OCR utilities that will work in Windows 7 64-bit?
5
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5
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What is this symbol `¬` and how to remove it from an MS Word 2013 file?
I used a OCR program to convert some scanned pages to an ms word file.
After the conversion is possible to found the symbol ¬ in the middle of many words.
I tried to search and replace it but word is ...
5
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2
answers
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OCR with non-language text
I am interested in using OCR to recognize text from a document that doesn't contain words. Rather, it is a document with a long string of "random" printed characters. I have been trying to use ...
5
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1
answer
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In Onenote, how do I 'make text in image searchable' enabled by default?
OneNote has a great OCR feature where you can select an image and click make text in image searchable.
But I'd like this enabled by default for all images I paste into OneNote - is this possible? (...
5
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1
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Is there a better way to correct errors in Adobe Acrobat's OCR results?
I'm using OCR Text Recognition integrated into Adobe Acrobat Pro 8 to produce an (invisible) searchable text overlay for text pages I have scanned. This is very neat for copying some phrases to the ...
5
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0
answers
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Can I tinker with the encoding when using pdftotext to convert PDF to text?
Sometimes when I do pdftotext it results in perfect text. I assume this is because the actual unicode text data is embedded directly in the PDF itself, and simply read out.
But other times (around ...
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0
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How to compress Tesseract-encoded PDFs while maintaining embedded text from OCR?
I've been experimenting with using Tesseract to OCR my PDFs, and it has been mostly successful, particularly with German Fraktur texts (the old style gothic print), which tools like Adobe Acrobat can'...
4
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4
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Copy pdf text layer to another pdf
Suppose you've got 2 "scanned" pdf files.
Large, but without text layer.
Smaller (with lower quality images), but with correct text layer.
Both files contain equal images, different only by their ...
4
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2
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Online OCR website for processing an entire pdf file at one time? [closed]
I am looking for an online OCR website for processing a multi-page pdf file at one time. Free preferably.
I know http://www.newocr.com/. If I am correct, it can only OCR one page at a time, by ...
4
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2
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Image to Text converter [closed]
I need a software which can convert scanned text to editable text. I will prefer freeware?
4
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2
answers
4k
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How to automatically find non-searchable PDFs
Suppose I have a directory full of many PDFs. In most of them, the text is completely search-able, which is the way I need them to be. But a few of them are just image scans, and they need to be OCR-...
4
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2
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When running Adobe Acrobat's OCR on a PDF document, which downsampling produces a higher quality: 600 dpi or 72 dpi?
I have a large PDF document that consists of scanned pages of a textbook. I want to run Adobe Acrobat 9's text recognition function on it, but I'm presented with this menu when I do.
I'm confused by ...
4
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1
answer
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How to create documents from scanned images
I have a large number of Micorsoft Word documents to create, after a disk crash and patchy backups, destroyed the originals.
We have a fair amount of the originals left, and instead of manually ...
4
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1
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Replace (OCR) garbled text in PDF?
Now and then I come across a PDF which looks fine in first place but the underlying text is garbled.
Currently I have a PDF where only the headings are garbled and I would like to know if it's ...
4
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1
answer
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How to add OCRed text to original pdf in gscan2pdf?
I am new to gscan2pdf 0.9.31, and just used it to OCR a scanned pdf.
After saving the pdf, the OCRed text is stored on the top left corner. However I wish each OCRed character to be added to ...
3
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3
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How to effectively scan 130,000 paper pages in 10 days
I have a rather large project which will ultimately benefit society, and I'm looking for all the help I can muster.
I have about 130,000 pages that need to be digitized. Many of them are in packages ...
3
votes
2
answers
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Optimal lossy compression of images
I have a lot of images/documents, where I want quite a low filesize, without throwing away to much information, or cause generation loss with future compression.
A) Documents, business cards etc ...
3
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3
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What software can convert handwriting to text?
I took a look at MyScript, but the program does not accept PDF format.
I have a few documents (PDF) that are scans of hand writing.
I need a program that can take the PDF scan it, use OCR and ...
3
votes
1
answer
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How to extract Unicode character from .png file?
I want to extract Unicode character from .jpg and .png files.
I try to do it by using following command:
tesseract 1.png output.txt
That command works for English characters but when I try it for ...
3
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1
answer
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Editing searchable .pdf OCR
My case is quite specific so I'll try to explain it quickly and precisely.
I have to digitalize several old paper sheets of 230mm x 268mm (~ 9" x 27,7") folded in 4 parts; you can find a quick drawn ...
3
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3
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3k
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Batch convert pdf's t searchable pdf's
I'm looking for a way to convert thousands of pdf's to searchable pdf's. I've used a program called "PDF Create Assistant" that came with Nuance's ecopy software. However, you can't select a folder, ...
3
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2
answers
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OCR in Word 2013
Word 2013 can naively open and edit PDF documents (big plus in my opinion). Is there a way to get it do some OCR as well?
On a PDF that that had mostly pictures, even the parts that were pure text ...