PDF Text Extraction Approach Using OCR

Has anybody attempted to extract text from a PDF using an OCR library and Java? What did you find to be the most reliable library for text extraction. Most of the approaches I've seen...

Using Ruby And Ubuntu With Optical Character Recognition

I am a university student and it's time to buy textbooks again. This quarter there are over 20 books I need for classes. Normally this wouldn't be such a big deal, as I would just copy and paste...

OCR recognition - gocr

I have a small problem while trying to do ocr using the tool gocr. It sometimes recognizes an o as zero and vice versa. To solve this, i tried to make it use a user specified database path. But...

Can I digitalize a dictionary?

I've found a public domain latin<->portuguese dictionary in PDF which I'd like to convert to plain text, parse and use as the database of a program. After some testing, however, I got a little...

Image Processing - Rotation and Optical Character Recognizion

Good Morning everybody, Today I wanna concern about the topic "Image Manipulation in C++". So far I am able to filter all the noisy stuff out of the picture and change the color to black and...

handwriting recognition with simple training

I've been reading (and trying) OCR programs suggested in previous answers but I'm still without a clear answer to my problem. I need to recognize handwritten English text. The text would be...

Finding bounding box of text within JPG image

My question is similar to this one, but is more specific in scope. In my card game application, I would like for users to be able to click on words located in a scanned jpeg image. Please see this...

Create images of words from text in an image

Does anyone know of any libraries (preferably Java, but I would look at anything) that would allow me to break apart text in an image and create smaller images for each word? I have tested GOCR...

Improve pre-processing for OCR/Image Recognition

Currently i'm having a huge intrest in image processing and optical character recognition. After some basic recognition and some filters I decided to start on something more diffucult. I'm trying...

Getting gocr to use the database

I'm trying to get gocr to do recognize text in a png. I run gocr using the following: gocr -p ../db/ -m 386 output-4.png the -m 386 option switches off the recognition engine, and extends the...

Tesseract has trouble reading this extremely simple string of numbers

I'm currently writing a script in python that requires the use of tesseract to read a number like this: Using digits only and -psm 6 (or 7) it outputs 5.551 I have had some success with other...

Piping image on Windows

Running this command in Windows shell: djpeg -pnm -gray text.jpg | gocr - works as expected - the image is decoded by djpeg executable and passed to gocr which decodes the contents. I would like...

Make text in image thinner for OCR

I'm making an automated text recognition script with Python on Ubuntu. I'm using Gocr and the recognition render is too low. Exemple: Output: _O4_4E34E_4_O4_ I suppose that the type in the image...

tessaract ocr on url image gives me 100% error file

When I run tessaract on a PNG image containing only urls, it gives me a 100% error output like: Jcâa\râcL7mpnmeVr Jevuusdwvmceranr pmmyhemnï¬r nnnnnysaaan ï¬mï¬asmunï¬r Is there a way...

Recognizing texts of a pnm image using gocr in SLES11

In my program trying to read character of a PNM image file like gocr -i $pnm > $txt and getting this message threshold: Value<=gmin thresholdValue out of range 0..255, reset to 128 no boxes...

OCR algorithm (GOCR) to 32F429IDISCOVERY board

I'm trying to implement an OCR algorithm (GOCR algorithm specifically) to 32F429IDISCOVERY board and I'm still getting nothing back... I'm recording a image from OV7670 camera in RGB565 format to...

32F429IDISCOVERY board hard fault/default handler

I'm trying to implement a GOCR algorithm to 32F429IDISCOVERY board. The GOCR itself works very well on PC but on the discovery board I'm still having some issues that makes it unstable and...

Linux OCR of LCD characters

I'm looking for a command line method to do optical character recognition in linux. The main problem, however, is characters are 7-segment LCD characters. For exampe, I would like to use GOCR,...

Howto improve OCR results

I tried to improved the results of OpenSource OCR software. I'm using tessaract, because I find it still produces better results than gocr, but with bad quality input it has huge problems. So I...

GOCR not using training results

I have an image which I found on Google. My intention was to once train GOCR with that sample image and then reproduce the results with the knowledge I acquired. I used gocr -i /tmp/scanned2.jpg...

Get different result when do same command in console and exec()

When I do in console /home/..myserver_path../.local/bin/gocr -i '/home/..myserver_path../runtime//tmp/135_45_ca4b78115a191517c9e356d34deb000c.jpg' 2>&1 it work ok. But when I do in php...

Getting handwritten text from images

How to extract handwritten text from images, like bank form images, in Java? I tried to using Tesseract, OCR, GOCR but didn't working for me. Are there any other ways to extract handwritten text...

not a pbm, pgm or ppm file. by ocrad

I'm sending a book page photo from browser to PHP. I'm writing the photo to disk using this: $decoded = base64_decode($img); file_put_contents($output_file, $decoded); However when I run...

How can I download and install a particular version of Clang on OS X?

This is right now what shows on my machine: clang --version Apple LLVM version 10.0.0 (clang-1000.10.44.4) Target: x86_64-apple-darwin17.7.0 Thread model: posix InstalledDir:...

How to use AppImageTool to create package to run on older Linux

I'm trying to use appimagetool(https://appimage.org/) to create a single-binary executable of the OCR program tesseract(https://github.com/tesseract-ocr). I have built tesseract on Ubuntu 19.10,...