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Thread: Linux OCR solution

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  1. #1
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    Linux OCR solution

    OCR in Linux is alive and well.
    Lios is a free and open source software for converting print in to text using a scanner. It can also produce text out of scanned images from other sources. Program is given total accessibility for visually impaired.

    Features

    1 Single scan & Repeated Scanning, 2 Scan images from folder or Pdf, 3 Full GUI environment, 4 Brightness optimizer, 5 Audio converter, 6 Easily Accessible Preference Window, 7 5 OCR Engines (OCROPUS,CUNEIFORM,TESSERACT,GOCR,OCRAD), 8 Good text manipulation with Find, Go-To-Page, Append file, Punch File. 9 Low vision support in the tools menu, 10 Dictionary Support for english(Artha) 11 And more features are in the preferences.
    http://code.google.com/p/linux-intel...-ocr-solution/
    EasyBCD.
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    The post above and the post below suffer from the Rashomon effect!

  2. #2
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    Ubuntu Development Release

    Re: Linux-intelligent-ocr-solution

    looks good but alas does not open files so no processing is possible.
    Oneiric 11.10

  3. #3
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    Re: Linux OCR solution

    I could not get this to run properly on kubuntu 11.10. I also had problems uninstalling the package, and had to resort to deleting it manually as the packaged uninstall scripts failed. Will be a useful application if it can be fixed.

  4. #4
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    Lightbulb Linux-intelligent-ocr-solution

    Linux-intelligent-ocr-solution

    LIOS is a free and open source software for converting print in to text using either scanner or a camera. It can also produce text out of scanned images from other sources. Program is given total accessibility for visually impaired. LIOS is written in python and we release it under GPL3 license. LIOS will work with Debian based operating systems. LIOS is an effort from the easy-ocr development team. There are great many possibilities for this program. Feedback is the key to it. expecting your feedback.

    HOW TO INSTALL


    Download deb file from here http://linux-intelligent-ocr-solution.googlecode.com/ download the latest deb package and install
    What is new in LIOS-1.2
    1 Cam-Scan,
    2 Cam-Reader,
    3 Scan-to-image-only,

    4 Scan-to-images-repeatedly,
    5 Introduction of py-sane, Glaid library make the program faster and efficient,
    6 Multiple arguments are handled effectively,
    7 Ocr a single Image,
    8 Artha shortcut (alt+control+W),
    9 Beta version of spell-checker,
    10 Provision for submitting issues in the About Dialog.
    Features
    1 Single scan & Repeated Scanning,
    2 Ocr Folder,
    3 Ocr Pdf,
    4 Ocr image only,
    5 Cam-Scan and Cam-Reader,
    6 Scan-for-image-only & repeatedly,
    7 24 Language support (Given at the end),
    8 Full GUI environment,
    9 Selection of starting page number, page numbering mode and number of pages to scan,
    10 Selection of Scan area, brightness, resolution and time between repeated scanning,
    11 Full Auto Rotation,

    12 Brightness optimizer,
    13 Audio converter,
    14 Easily Accessible Preferences Window,
    15 5 OCR Engines (OCROPUS,CUNEIFORM,TESSERACT,GOCR,OCRAD),
    16 Good text manipulation with Find, Go-To-Page, Go-To-Line, Append file, Punch File.
    17 Display Preferences for Low vision,
    18 Dictionary Support for English(Artha)
    19 Beta version of spell-checker,
    20 Provision for submitting issues,
    21 And more features are in the preferences.

    How to start using LIOS.
    1. Scanning.

    In order to start new scan, first press ctrl+n and then press f9 for single scan or ctrl+f9 for repeated scanning. To set the scanning preferences press ctrl+p and set the starting page number, Mode of page numbering, double page mode if you intend to keep 2 pages at a time, rotation to select the way in which you want the program to rotate the images before conversion. In full automatic rotation mode, one can keep the book in 00 90 180 and 270 degree angle. In partial rotation mode program will scan once to find out the position of the book and then the rotation will be kept. In manual mode one should select the angle. partial and manual mode is faster than full auto rotation mode in ocr process. One can select the number of pages to be scanned at a stretch by setting number of pages in the case of repeated scanning. One can stop all scanning process by pressing ctrl f4.
    2. Cam-scan.

    one can now use Hovercam or a Webcam to produce text in LIOS. Adjustments with these devices can be made using LIOS-cam-preferences in edit menu. This feature will help to read books and other printed materials such as visiting cards currency and like and also it makes the ocr process very fast and accurate. Please be specific to use devices with auto focusing facility. remember that there is no autorotation in this utility.so for the same reason, support of a stand for the webcam will be highly appreciated.
    3. Cam-reader.

    is the utility which will give a continuous output as one moves the webcam. First it will create the image and then will produce the text and it will start reading. After the completion of reading, it will repeat the process automatically. In cam-scan, one has to take the photo and it will be converted in to text.
    4. Ocr Image.

    LIOS can convert image file to text which is in jpg, tif, png, pnm and bmp.
    5. Ocr folder.

    LIOS can convert scanned images from other sources. It can convert jpg, jpeg, tif, tiff png, pnm, formats. To convert the images in a folder, select scan from folder option from scan menu and then select the input folder.
    6. Ocr Pdf file.

    Select Ocr pdf from scan menu and then select the input file. It is recommended that one can use ocropus as engine more efficiently in pdf conversion.
    7. scan for image only and scan for images only repeatedly.

    Help one to scan only images and it will give the user opportunity to utilize different ocr engines conveniently. Also it avoids delay between each scan if one does not want to listen to the output. Images will be saved in LIOS or one can choose his own destination. Now conversion can be done using folder option.
    8. Brightness checker.

    To set a n exact value of brightness or threshold is the best way to ensure maximum efficiency out of ocr engines. To find out the best value, go to tools menu and select brightness checker. This utility will scan for 15 or 17 times to complete the process. After the process, number of words detected at different values will be shone in tabs. If you want to know the precise value only, shift tab and then tab to apply the value.
    9. Audio conversion.

    LIOS can convert the text opened in LIOS to wav files. To convert the text in to speech, go to tools menu and select audio converter.
    10. Text Manipulation.

    To go to page, press ctrl+g and then type the page number, and tab to OK. In the case of double page type only odd number, for example 1 in the case of 1-2 and 11 in the case of 11-12. One can go to any line by pressing ctrl+l and ctrl+f will help to find any word in the document.
    11. Display preferences.

    display preferences in the edit menu will help to set fond size, color , italic, bold and color of the background.
    12. Engines.

    There are 5 engines in LIOS.out of these only cuneiform can handle 24 languages, list given at the end. All other engines can handle only English. Cuneiform is good for speed and picture skipping ,ocropus is good for layout analysis and pdf conversion.
    13. Artha.

    In order to find out the meaning of English words, first select the word and then press alt+ctrl+w and tab to find the meaning. Caution for the first time one has to press alt+control+w twice so as to switch on artha
    14. Spell checker.

    A beta version of spell checker is added to the program.press ctrl f7 and all the misspelled words will appear and one can change them.
    Cuneiform support Bulgarian, Croatian, Czech, Danish, Dutch, English, Estonian, French, German, Hungarian, Italian, Latvian, Lithuanian, Polish, Portuguese, Romanian, Russian, Russian-English bilingual, Serbian, Slovene, Spanish, Swedish, Turkish, and Ukrainian.
    Disclaimer

    Copyright (c) 2011-2012 LIOS Development Team

    All rights reserved . Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

    Redistributions of source code must retain the below copyright notice,

    this list of conditions and the following disclaimer.

    Redistributions in binary form must reproduce the below copyright notice,

    this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

    Neither the name of the nor the easyocr team names of its

    contributors may be used to endorse or promote products derived from this software without specific prior written permission.

    THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."

    FREE SOFTWARE FREE SOCIETY

  5. #5
    Join Date
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    Re: Linux OCR solution

    Now this seems to have a great potential and I will be downloading it and testing soon. I will give feedback as soon as I've run it through its paces. Thanks so much for your endeavor. Keep us posted of any new developments.
    EasyBCD.
    PrintersDatabase
    Boot Info Script: How to
    The post above and the post below suffer from the Rashomon effect!

  6. #6
    Join Date
    Feb 2012
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    Re: Linux OCR solution

    I have tried version 1.2 and got further than before. The package seems to install and uninstall OK. One dependency probably worth adding is desktop-file-utils as I had to install this to get the package to install.

    Scan&OCR -> caused the scanner to run, followed by a fragment of unintelligible speech and then nothing. I tried all the speech engines with similar results. Typical output on the console is as follows:

    Code:
    Device : Perfection V330 Photo
    ('00', 'CUNEIFORM', 'eng')
    Cuneiform for Linux 1.1.0
    ('90', 'CUNEIFORM', 'eng')
    Cuneiform for Linux 1.1.0
    ('180', 'CUNEIFORM', 'eng')
    Cuneiform for Linux 1.1.0
    ('270', 'CUNEIFORM', 'eng')
    Cuneiform for Linux 1.1.0
    ALSA lib pcm.c:7316:(snd_pcm_recover) underrun occurred
    ALSA lib pcm.c:7316:(snd_pcm_recover) underrun occurred
    ALSA lib pcm.c:7316:(snd_pcm_recover) underrun occurred
    ALSA lib pcm.c:7316:(snd_pcm_recover) underrun occurred
    ALSA lib pcm.c:7316:(snd_pcm_recover) underrun occurred
    ALSA lib pcm.c:7316:(snd_pcm_recover) underrun occurred
    cat: temp.txt: No such file or directory
    rm: cannot remove `*.tif': No such file or directory
    rm: cannot remove `*.html': No such file or directory
    rm: cannot remove `*.wav': No such file or directory
    rm: cannot remove `*.png': No such file or directory
    rm: cannot remove `*.jpeg': No such file or directory
    rm: cannot remove `*.jpg': No such file or directory
    rm: cannot remove `scanimage.text': No such file or directory
    Found
    Cam-Scan -> The camera light flashed briefly and then no further activity.

    Scan-Image-Only-> Scanner runs, voice says 'The page appears to be blank', blank image saved. (The page has clear printed text)

    OCR-Image -> Failed to OCR text.

    EDIT:

    Managed to OCR an image using the tesseract OCR engine but takes several minutes to complete - just a few seconds when done from the command line.

  7. #7
    Join Date
    Nov 2009
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    16

    Re: Linux OCR solution

    Quote Originally Posted by russell hedger View Post
    I could not get this to run properly on kubuntu 11.10. I also had problems uninstalling the package, and had to resort to deleting it manually as the packaged uninstall scripts failed. Will be a useful application if it can be fixed.

    I have the same problem in Kubuntu 12.04. How did you actually un-install it? Thank you!

  8. #8
    Join Date
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    Exclamation Re: Linux OCR solution

    Google Docs will read and convert PDF image texts to editable text files, however it leaves much to be desired as the formatting gets a little crazy and the load times are not quick. I would definitely prefer a native OS solution out of the box with Ubuntu.

  9. #9
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    Delhi, India
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    Ubuntu 12.04 Precise Pangolin

    Re: Linux OCR solution

    I was looking for good OCR software to convert scanned PDF files to text and tried ABBYY Fine Reader online but after converting 3 pages the free trial stopped. Before that I had tried pdfocr and tesseract. Then I discovered this thread. This is working very well. Thank you.

  10. #10
    Join Date
    Dec 2012
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    16

    Re: Linux OCR solution

    I downloaded the 1.7 version and installed through Ubuntu Software Center on a Ubuntu 12.04 x64 machine.
    When I launch the program I got this error:

    Code:
    ~$ lios
    Traceback (most recent call last):
      File "/usr/bin/lios", line 3, in <module>
        from lios.lios import *
      File "/usr/lib/python2.7/dist-packages/lios/lios.py", line 12, in <module>
        import gnomecanvas
    ImportError: No module named gnomecanvas
    Can someone help try this OCR?

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