Questions relating to Optical Character Recognition (ocr)

learn more… | top users | synonyms

2
votes
0answers
23 views

Tesseract and hOcr on Ubuntu 14.04

I've been having a problem with tesseract and hocr2pdf output since upgrading from 13.10 to 14.04. Tesseract now creates an .hocr file rather than an .html file for ocr output, but this is not ...
6
votes
2answers
65 views

How to turn a pdf into a text searchable pdf?

I have a number of scanned documents in pdf and I want to be able to search them. How can I do that? Essentially I have to OCR the pdf and then blend the extracted text back into a new pdf. I have ...
0
votes
1answer
37 views

Is it a good idea to try to compile tesseract 3.02 on ubuntu 14.04?

I have ubuntu 14.04 on my notebook, and i am going to work with tesseract by compiling it for some computer science related research. Am i on a good path? Svn of tesseract provides only 3.02 as i ...
2
votes
2answers
184 views

Why are no OCR engines working in Gscan2pdf after upgrading to 14.04?

I recently upgraded to Ubuntu 14.04, but the OCR in gscan2pdf stopped working. I am using the latest gscan2pdf (1.2.4) with both Tesseract and Cuneiform available. When loading pdf documents in ...
2
votes
1answer
32 views

scan receipts with a GUI

I'm new to ubuntu, and I'm trying to find an application to scan my receipts in order to create an expense report. Is there any software available? Any help is greatly appreciated. thanks
0
votes
2answers
171 views

Install GimageReader in Kubuntu - my last step of getting rid of Windows

Hope all are doing well. I have been Windows-free for almost two weeks now. And I am not even using Wine, to use Windows software. Initially I installed Ubuntu, then I shifted to Kubuntu [I like the ...
0
votes
0answers
43 views

how to train tesseract ocr engine

i was wondering how to train tesseract ocr engine , saw some video's people using some GUI and some uses command-line with some saved file's. i want to know how to train the engine/make these file's ...
0
votes
0answers
68 views

tesseract OCR Engine reorganization problem

i'm trying to use 'tesseract' on JPG image's. its seems that it doesnt recognize the number's and character's in the command-line currently. but when i use OCRFeeder manually and select the bounds ...
2
votes
1answer
102 views

Help with Canon CanoScan LiDE scanned PDF Documents

I have just started working with Ubuntu for the last 10 days, with the intention to stop using Windows permanently. So far it has been awesome. I have replaced almost all my Microsoft applications ...
0
votes
1answer
40 views

Tesseract OCR Engine on ubuntu how to

ive installed Tesseract-ocr, was looking at the manual but i cant see an option that i can select an image bounds (X,Y,W,H) can someone help about it , or am asking in a wrong place ?
1
vote
1answer
51 views

Is there a good OCR-readable font

As part of my backups, I would like to be able to print and later re-scan a Base64-encoded copy of my private key. Unfortunately, neither gocr nor tesseract seems to be able to properly read any font ...
2
votes
1answer
74 views

ASCII art generator with OCR

What program can turn an image into ASCII-art, but also replace any text with the actual text with OCR. For example, for converting a comic to ASCII art.
1
vote
1answer
134 views

How to improve tesseract performance?

By all accounts, tesseract is superb. However, my results are dismal. I need to convert (digital, as opposed to from a book) text that I only have as a png. For instance: 2 3 academics 1 1711 2 ...
1
vote
0answers
100 views

Alternative to Paperwork

I am looking for an alternative to the program Paperwork as it is rather complicated to install under Ubuntu. I am specifically interested in finding a way to read dates, prices and other details from ...
0
votes
0answers
10 views

pdfsandwich - how to not change page colour

I am using pdfsandwich but it changes the colour of the pages from colour to black and white. Since I have a document with many coloured pictures how can I avoid it?
1
vote
1answer
624 views

Cannot Scan from Gscan2PDF on 13.10 or OCR with Tesseract

I am having a little bit of trouble with one of my favourite pieces of open source software. I had installed Gscan2PDF (1.0.4) from the Software Centre on my 13.10 64bit machine (clean install from ...
1
vote
1answer
89 views

TV channel Identification using Linux C Programming

I need to develop an application which will identify the channel name which is currently running in the Television. I am using Easy CaP Video capturing device to take the video in from the dth set top ...
0
votes
0answers
50 views

PDF “Not OCR-Able”

I am trying to read a book from archive.org with these characteristics: Ppi: 300 Ocr: language not currently OCRable Page-progression: rl Source: ppnull The book is arabic and shows me ...
0
votes
0answers
68 views

OCR Feeder, creating columns

I'm trying to convert a PDF file, which has columns into some kind of editable form of document with columns, preferably Libre Office Calc. Can anyone tell me if this is possible, either directly or ...
1
vote
1answer
3k views

Optical character recognition for LibreOffice

I have a paper document. There are more pages containing a table with 3 columns (current number, name and a grade). I scanned it and got 16 jpeg documents. Each jpeg is a scanned page. Now, I need ...
1
vote
2answers
2k views

“sh: 1: cannot open /tmp/pdfsandwich4e375e.html: No such file” when using pdfsandwitch [closed]

I tried to add a textlayer to some pdf files in order to make them searchable. This technique is explained in the german Ubuntu wiki: http://wiki.ubuntuusers.de/pdfsandwich . After installing ...
2
votes
2answers
2k views

Abbyy fine reader like application for Ubuntu 13.04

I have a lot of images and what I want to do is to scan those images and get output in ms word file that can be edited later. For Windows, I have Abbyy fine reader. But I don't want to go back to ...
2
votes
1answer
515 views

Convertion of tiff image in Python script - OCR using tesseract

I want to convert a tiff image file to text document. My code perfectly as I expected to convert tiff images with usual font but its not working for french script font . My tiff image file contains ...
10
votes
1answer
1k views

How can instantaneously extract text from a screen area using OCR tools?

In Ubuntu 12.10, if I type gnome-screenshot -a | tesseract output it returns: ** Message: Unable to use GNOME Shell's builtin screenshot interface, resorting to fallback X11. How can I select a ...
1
vote
1answer
643 views

How to wildcard tesseract?

I want tesseract to convert all the files of a folder. I do not want to merge the files in any way as I am having trouble with programs like hocr2pdf and pdfbeads merging more than one file at a time. ...
2
votes
1answer
236 views

pdfbeads will only output a single page

Following the instructions from this page I take a djvu document, check it for any sign of corruption by opening it in djvulibre and it checks out fine. Copy it to my testing folder and rename it ...
0
votes
3answers
744 views

batch tesseract conversion

I am trying to OCR a book using tesseract however I do not want to type each individual page as it is a book near 1000 pages. How would I accomplish this I tried tesseract *.tif * which gives me this ...
1
vote
2answers
613 views

converting djvu to pdf trouble with this OCR preserving code

I want to convert djvu to pdf while preserving OCR. This page describes how to do so, but I am getting a blank html file. In /home/steven/Documents/djvu2pdf/1/, djvu2hocr -p 1 Intro.djvu gives me: ...
3
votes
1answer
1k views

How do I produce a multi-page sandwich pdf with hocr2pdf?

I used tesseract to produce the special html to use with hocr2pdf starting from a muti-page tif. I tried using hoc2pdf to produce a "sandwich pdf" (image + hidden text layer). Hocr2pdf produces a ...
5
votes
1answer
131 views

document management private users

i am searching for a document management system that supports: can bulk scan documents automatic OCR of scanned documents data storage on my local HD / external server of my choice automatic ...
10
votes
5answers
16k views

How do I edit text in a scanned .jpeg?

I need to upload a scanned image as a PDF document. After scanning the document, I have a .jpeg with small text that I want to edit before converting to PDF for the upload. I have never done this ...
10
votes
5answers
3k views

Adding OCR info to a PDF

I have a good quality scan of a document; such scan is in pdf format. How can I add ocr information to the pdf, so that it becomes searchable? By searchable I mean that the goal is that when viewing ...
0
votes
2answers
496 views

Error in installing GOCR

When I tried to install GOCR on Ubuntu Linux 11.10 I got the following readout in the terminal ??????????:~$ cd gocr-0.48; make install ./configure checking for gcc... gcc checking for C compiler ...
10
votes
1answer
4k views

How can I extract text from images?

How can I extract text from images? I am not talking about scanned files, but garden variety images, such as when you take a high-def picture of a blackboard at class, and it is nicely handwritten; ...
1
vote
0answers
589 views

Why is ocrodjvu not working while tesseract is? [closed]

I can use tesseract v3.01 successfully. For example $ tesseract toc.tif output -l chi_sim Tesseract Open Source OCR Engine v3.01 with Leptonica Page 1 Page 2 Page 3 Page 4 Page 5 But with ocrodjvu ...
1
vote
1answer
1k views

Tesseract and OCRopus

I was wondering what relations are between Tesseract and OCRopus? Is OCRopus a wrapper of Tesseract? Or are they now developing independently? What are some advantages of one over the other? ...
3
votes
0answers
479 views

How to add OCRed text to original pdf in gscan2pdf? [closed]

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 exactly ...
5
votes
1answer
4k views

How can I specify the language to be used by Tesseract when using OCRFeeder

I'm using the OCR-utility of OCRFeeder. OCRFeeder is using the tesseract-engine. I have installed the several language-packs needed for tesseract. How can I set the language such that tesseract will ...
20
votes
2answers
14k views

What's the best, simplest OCR solution?

I'd like to scan a good amount of papers I have lying around, with the least possible hassle. I would like to convert them to images using Simple Scan, then convert them to text using OCR. Is there a ...