We Keep Coding

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 from images in Java which works at least 80-90%?

Question with links to libraries
I don't think JAVA natively supports this function, so you gotta use libraries.
There was a question which asked for working libraries and the general consent was: you won't get a 80-90% working recognition in a free and open source library.
Anyway, you can try this, as it is a wrapper for Tesseract.

Read Character Value from image through java program

Hi All,
As showing i have an image with fields Username & City & Work as in the image. I just want to read these Character fields value from this image with java program.
If any one have any idea about this please let me know
thanks

You can google with Java Character recognition through image and there is also good way to do this with this example. this jar you can use as for testing

Tess4J, a Java wrapper of Tesseract engine, can recognize such images (after rescaling to 300 DPI).

You should start looking into character recognizing libraries like shown here. also, look at this question here

To read the image you can use BufferedImage: http://docs.oracle.com/javase/tutorial/2d/images/loadimage.html
Once you have loaded the image you can run an OCR module to get its text. Here are some examples of OCR software sorted from better to worst: ABBYY (but it is not free), Tesseract, Java OCR, Asprise...
And that is all !!

How to recognize character from the image using java?

I want to recognize the barcode from the image file using Java, but I am a beginner to development. So I do not have any idea on this. Please help me.

http://code.google.com/p/zxing/ has a very nice api for scanning barcodes in various formats
if you are interested in decoding a barcode yourself, have a look at this processing example
i have written a while ago
http://www.local-guru.net/blog/2009/09/22/barcodescanner-in-pure-processing

The following links may help you. Check them out.
BarCode of image taken in java
Barcode image generator in java
EDIT after 1st comment:
To get barcode from file, check the following link:
Java Barcode API
Java Barcode generator

Asprise commercial library is the best solution
You have other alternate which can be useful
http://barbecue.sourceforge.net/

Using Java to capture an area of the screen and identify text found there

This question may be beyond the scope of a simple answer here at stack overflow, but my hope is that it will lead me to be able to formulate several more specific questions to get where I need to be.
I want to write a program that searches a buffered image for text and returns it as a string. I don't want to write an entire OCR program, but would rather use an API that is freely available such as tesseract. Unfortunately I've been unable to find a Java API for tesseract.
I know that the font is arial and I know it's size. I am wondering if that will help.
I've already managed to capture the screen, but I'm not sure how to accomplish the next step of identifying the text found in the image.
the question
How can I implement a simple OCR function into my java program?

You can use tesjeract or tess4j wrapper of Tesseract API. Be sure to rescale you images to 300 DPI since screenshots' resolution (72 or 96 DPI) is in general not adequate for OCR purpose.

The OCR implementation is complicated, but using an SDK like http://asprise.com/product/ocr/index.php?lang=java is simple.

Extract text from PDF (google app engine)

Is there any free Java library for extracting text from PDF, that is compatible with Google Application Engine?
I've read about PDFJet, but it can't read PDF, can it?
Is there perhaps other way how to extract text from PDF? I tried http://www.pdfdownload.org/, unfortunately they don't handle non-English characters correctly.

iText now has a text parsing module (I'm one of the parser authors). See the com.itextpdf.text.pdf.parser.PdfContentReaderTool class for an example of how to use it.

PdfBox does not run on GAE. It uses not-allowed java classes.
(GAE only permits these http://code.google.com/appengine/docs/java/jrewhitelist.html)
I have partially modified a very old version of PdfBox (0.7.3) to be GAE complaiant. Now I'm able to extract text from PDF (whole page or rectangular area). I only modified a minumum part of the pdf text extraction and not the whole PdfBox. :)
The idea was to remove refences to java.awt.retangle & C. using my own "rectangle" class.
More info: http://fhtino.blogspot.com/2010/04/pdfbox-text-extration-gae.html

I modified the latest (1.8.0-Snapshot) version to run on Google AppEngine. Had to disable one Unit-Test, but it runs fine for simple text extraction.
Following the simple try-fail-fix approach i had to modify 5 files in total. Pretty doable.
You'll also have to explicitly use a RandomAccessBuffer, like Fabrizio explained.
For the extra lazy, heres the compiled jar, dependencies for text extraction, and the patch. Note that it might not work for every usecase (i.e. rectangle based extraction). Used it to extract text of a whole page.
https://docs.google.com/folder/d/0B53n_gP2oU6iVjhOOVBNZHk0a0E/edit

I know there is http://pdfbox.apache.org/index.html
Apache PDFBox is an open source Java
PDF library for working with PDF
documents. This project allows
creation of new PDF documents,
manipulation of existing documents and
the ability to extract content from
documents.
but I've never tested it.

Last month, I'd just finished extracting text from pdf file in my project. I used XPDF tool for getting text, and text coordinates, but I used it in Xcode (Objective-C). This tool was open source, written by C++, and able to be encoded in many language. However, I didn't know whether XPdf would be work on your java, or not. Anyway, You can try this tool.