net.sourceforge.tess4j
Class TessDllAPI1

java.lang.Object
  net.sourceforge.tess4j.TessDllAPI1

All Implemented Interfaces:

com.sun.jna.Library

Direct Known Subclasses:

Tesseract1

public class TessDllAPI1
extends java.lang.Object
implements com.sun.jna.Library

A Java wrapper for Tesseract OCR DLL using JNA Direct Mapping.

Nested Class Summary

static interface

TessDllAPI1.CANCEL_FUNC Callback for cancel_func.

Nested classes/interfaces inherited from interface com.sun.jna.Library

com.sun.jna.Library.Handler

Field Summary

static java.lang.String

LIB_NAME DLL library name.

Fields inherited from interface com.sun.jna.Library

OPTION_ALLOW_OBJECTS, OPTION_CALLING_CONVENTION, OPTION_FUNCTION_MAPPER, OPTION_INVOCATION_MAPPER, OPTION_STRUCTURE_ALIGNMENT, OPTION_TYPE_MAPPER

Constructor Summary

TessDllAPI1()

Method Summary

static int	TessDllBeginPage(int xsize, int ysize, java.nio.ByteBuffer buf) BeginPage assumes the first memory address is the bottom of the image (MS DIB format).
static int	TessDllBeginPageBPP(int xsize, int ysize, java.nio.ByteBuffer buf, byte bpp) BeginPage assumes the first memory address is the bottom of the image (MS DIB format).
static int	TessDllBeginPageLang(int xsize, int ysize, java.nio.ByteBuffer buf, java.lang.String lang) BeginPage assumes the first memory address is the bottom of the image (MS DIB format).
static int	TessDllBeginPageLangBPP(int xsize, int ysize, java.nio.ByteBuffer buf, java.lang.String lang, byte bpp) BeginPage assumes the first memory address is the bottom of the image (MS DIB format).
static int	TessDllBeginPageUpright(int xsize, int ysize, java.nio.ByteBuffer buf, java.lang.String lang) BeginPageUpright assumes the first memory address is the top of the image (TIFF format).
static int	TessDllBeginPageUprightBPP(int xsize, int ysize, java.nio.ByteBuffer buf, java.lang.String lang, byte bpp) BeginPageUpright assumes the first memory address is the top of the image (TIFF format).
static void	TessDllEndPage() Ends page.
static ETEXT_DESC	TessDllRecognize_a_Block(int left, int right, int top, int bottom) Recognizes one word or section from the bitmap or the whole page.
static ETEXT_DESC	TessDllRecognize_all_Words() Recognizes the whole page.
static void	TessDllRelease() Releases any memory associated with the recognize class object.

Methods inherited from class java.lang.Object

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

Field Detail

LIB_NAME

public static final java.lang.String LIB_NAME

DLL library name.

See Also:

Constant Field Values

Constructor Detail

TessDllAPI1

public TessDllAPI1()

Method Detail

TessDllBeginPage

public static int TessDllBeginPage(int xsize,
                                   int ysize,
                                   java.nio.ByteBuffer buf)

BeginPage assumes the first memory address is the bottom of the image (MS DIB format).

Parameters:

xsize - width of image

ysize - height of image

buf - a buffer of bytes for a 1 bit per pixel bitmap

Returns:

TessDllBeginPageLang

public static int TessDllBeginPageLang(int xsize,
                                       int ysize,
                                       java.nio.ByteBuffer buf,
                                       java.lang.String lang)

BeginPage assumes the first memory address is the bottom of the image (MS DIB format).

Parameters:

xsize - width of image

ysize - height of image

buf - a buffer of bytes for a 1 bit per pixel bitmap

lang - the code of the language for which the data will be loaded. Codes follow ISO 639-3 standard. If it is null, English (eng) will be loaded.

Returns:

TessDllBeginPageUpright

public static int TessDllBeginPageUpright(int xsize,
                                          int ysize,
                                          java.nio.ByteBuffer buf,
                                          java.lang.String lang)

BeginPageUpright assumes the first memory address is the top of the image (TIFF format).

Parameters:

xsize - width of image

ysize - height of image

buf - a buffer of bytes for a 1 bit per pixel bitmap

lang - the code of the language for which the data will be loaded. Codes follow ISO 639-3 standard. If it is null, English (eng) will be loaded.

Returns:

TessDllBeginPageBPP

public static int TessDllBeginPageBPP(int xsize,
                                      int ysize,
                                      java.nio.ByteBuffer buf,
                                      byte bpp)

BeginPage assumes the first memory address is the bottom of the image (MS DIB format).

Parameters:

xsize - width of image

ysize - height of image

buf - a buffer of bytes for a bitmap

bpp - bit depth (bits per pixel): 1 for binary bitmap; 8 for gray; 24 for color RGB

Returns:

TessDllBeginPageLangBPP

public static int TessDllBeginPageLangBPP(int xsize,
                                          int ysize,
                                          java.nio.ByteBuffer buf,
                                          java.lang.String lang,
                                          byte bpp)

BeginPage assumes the first memory address is the bottom of the image (MS DIB format).

Parameters:

xsize - width of image

ysize - height of image

buf - a buffer of bytes for a bitmap

lang - the code of the language for which the data will be loaded. Codes follow ISO 639-3 standard. If it is null, English (eng) will be loaded.

bpp - bit depth (bits per pixel): 1 for binary bitmap; 8 for gray; 24 for color RGB

Returns:

TessDllBeginPageUprightBPP

public static int TessDllBeginPageUprightBPP(int xsize,
                                             int ysize,
                                             java.nio.ByteBuffer buf,
                                             java.lang.String lang,
                                             byte bpp)

BeginPageUpright assumes the first memory address is the top of the image (TIFF format).

Parameters:

xsize - width of image

ysize - height of image

buf - a buffer of bytes for a bitmap

lang - the code of the language for which the data will be loaded. Codes follow ISO 639-3 standard. If it is null, English (eng) will be loaded.

bpp - bit depth (bits per pixel): 1 for binary bitmap; 8 for gray; 24 for color RGB

Returns:

TessDllEndPage

public static void TessDllEndPage()

Ends page.

TessDllRecognize_a_Block

public static ETEXT_DESC TessDllRecognize_a_Block(int left,
                                                  int right,
                                                  int top,
                                                  int bottom)

Recognizes one word or section from the bitmap or the whole page. To extract the whole page, just enter zeros for left, right, top, bottom. Limit of 32000 characters can be returned.
Note: Getting one word at time is not yet optimized for speed.

Parameters:

left - left of block

right - right of block

top - top of block

bottom - bottom of block

Returns:

TessDllRecognize_all_Words

public static ETEXT_DESC TessDllRecognize_all_Words()

Recognizes the whole page. Limit of 32000 characters can be returned.

Returns:

TessDllRelease

public static void TessDllRelease()

Releases any memory associated with the recognize class object.