CODEWITHSUNDEEP
androidocrandroid-ndktesseract
PrincessLeiha
PrincessLeiha

Reputation: 3174

How can I use Tesseract in Android?

I have searched on the net for a couple of hours. I got many answers saying we need to use NDK, etc. for "Tesseract" for WINDOWS.

But I didn't get any step-by-step/proper explanation of what should be done when NDK is installed. How to get the .so files? I have finished installing NDK and Cygwin. To check if it's done properly, I entered make -v and it gave the expected output.

Can anyone who has used "Tesseract" tell me how they have done it? (I have downloaded "Mezzofanti", but there I didn't find any of the "Tesseract" files.)

Upvotes: 22

Views: 54821

Answers (4)

Javier Castellanos Cruz
Javier Castellanos Cruz

Reputation: 103

This video shows you exactly how it is done

How can I use Tesseract in Android?

Make sure to: 1. Create the folder 2. in that folder you have to put the traineddata file (You can download it from here in the language you require https://github.com/tesseract-ocr/tessdata/tree/3.04.00 ) 3. Reference the path to the folder cointining the traineddata file and state the language: tessBaseApi.init(DATA_PATH, "eng");

Hope it helps

Upvotes: -1

Yuliia Ashomok
Yuliia Ashomok

Reputation: 8598

You need to use tess-two project for working with Tesseract on Android.
The tess-two contains tools for compiling the Tesseract and Leptonica libraries for use on the Android platform. It provides a Java API for accessing natively-compiled Tesseract and Leptonica APIs.

Adding tess-two to your project:

add to build.gradle:

dependencies {
    compile 'com.rmtheis:tess-two:5.4.1'
}

Using Tesseract:

import com.googlecode.tesseract.android.TessBaseAPI;

private String extractText(Bitmap bitmap) throws Exception{
    TessBaseAPI tessBaseApi = new TessBaseAPI();
    tessBaseApi.init(DATA_PATH, "eng");
    tessBaseApi.setImage(bitmap);
    String extractedText = tessBaseApi.getUTF8Text();
    tessBaseApi.end();
    return extractedText;
}

You can looking on my simple one-class example of using Tesseract for Android. It contains only 200 lines of Java code.

Upvotes: 23

Mr_Hmp
Mr_Hmp

Reputation: 2535

http://kurup87.blogspot.in/2012/03/android-ocr-tutorial-image-to-text.html here is step by step tutorial

Upvotes: 1

Uttam
Uttam

Reputation: 12399

You can refer this document, It gives ths step by step But you need to do is to set up the tesseract-android-tools project as a library project in Eclipse, and tell your project to refer to the library project. So you’ll need two projects in Eclipse,

http://rmtheis.wordpress.com/2011/08/06/using-tesseract-tools-for-android-to-create-a-basic-ocr-app/

I hope this help.....

Upvotes: 15

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