Package science.aist.imaging.tesseract.imageprocessing.opticalcharacterrecognition.tesseract

Class TesseractOCR

java.lang.Object

science.aist.imaging.tesseract.imageprocessing.opticalcharacterrecognition.tesseract.TesseractOCR

All Implemented Interfaces:

AutoCloseable, Function<ImageWrapper<short[][][]>,OCRResult>

public class TesseractOCR
extends Object
implements Function<ImageWrapper<short[][][]>,OCRResult>, AutoCloseable

OCR Implementation using Tesseract

Since:

1.0

Author:

Andreas Pointner

Constructor Summary

Constructors

Constructor	Description
TesseractOCR(String pathToTessData)	Constructor to initialize api.
TesseractOCR(String pathToTessData, String tessLanguage)	Constructor to initialize api.

Method Summary

Modifier and Type	Method	Description
OCRResult	apply(ImageWrapper<short[][][]> ji)	Performs OCR on given Java Image and returns found text.
void	close()	Close function to End api.
void	setMode(OCRMode m)	Set the Mode type (how to perform the image)
void	setWhitespaceCharacters(String characters)	Set whitelist characters, this help the ocr to know which letters are expected

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface java.util.function.Function

andThen, compose

Constructor Detail

TesseractOCR

public TesseractOCR(String pathToTessData)

Constructor to initialize api.

Parameters:

pathToTessData - relative to this path there has to be stored the tessdata folder with the correct language files in it. pathToTessData/tessdata/deu.traineddata

TesseractOCR

public TesseractOCR(String pathToTessData,
                    String tessLanguage)

Constructor to initialize api.

Parameters:

pathToTessData - relative to this path there has to be stored the tessdata folder with the correct language files in it. pathToTessData/tessdata/deu.traineddata

tessLanguage - the language with which tesseract should be initialized

Method Detail

apply

public OCRResult apply(ImageWrapper<short[][][]> ji)

Performs OCR on given Java Image and returns found text.

Specified by:

apply in interface Function<ImageWrapper<short[][][]>,OCRResult>

Parameters:

ji - java image

Returns:

the text which was found

setWhitespaceCharacters

public void setWhitespaceCharacters(String characters)

Set whitelist characters, this help the ocr to know which letters are expected

Parameters:

characters - whitelist characters

setMode

public void setMode(OCRMode m)

Set the Mode type (how to perform the image)

Parameters:

m - mode

close

public void close()

Close function to End api.

Specified by:

close in interface AutoCloseable