com.levigo.jbig2.image

Class Bitmaps

java.lang.Object

com.levigo.jbig2.image.Bitmaps

public class Bitmaps
extends Object

Constructor Summary

Constructors

Constructor and Description
Bitmaps()

Method Summary

Methods

Modifier and Type	Method and Description
static BufferedImage	asBufferedImage(Bitmap bitmap)
static BufferedImage	asBufferedImage(Bitmap bitmap, FilterType filterType)
static BufferedImage	asBufferedImage(Bitmap bitmap, ImageReadParam param, FilterType filterType)
static WritableRaster	asRaster(Bitmap bitmap)
static WritableRaster	asRaster(Bitmap bitmap, FilterType filterType)
static WritableRaster	asRaster(Bitmap bitmap, ImageReadParam param, FilterType filterType)
static void	blit(Bitmap src, Bitmap dst, int x, int y, CombinationOperator combinationOperator) This method combines a given bitmap with the current instance.
static byte	combineBytes(byte value1, byte value2, CombinationOperator op) The method combines two given bytes with an logical operator.
static Bitmap	extract(Rectangle roi, Bitmap src) Returns the specified rectangle area of the bitmap.
static Bitmap	subsample(Bitmap src, ImageReadParam param)
static Bitmap	subsampleX(Bitmap src, int xSubsampling, int xSubsamplingOffset)
static Bitmap	subsampleY(Bitmap src, int ySubsampling, int ySubsamplingOffset)

Methods inherited from class java.lang.Object

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

Constructor Detail

Bitmaps

public Bitmaps()

Method Detail

asRaster

public static WritableRaster asRaster(Bitmap bitmap)

asRaster

public static WritableRaster asRaster(Bitmap bitmap,
                      FilterType filterType)

asRaster

public static WritableRaster asRaster(Bitmap bitmap,
                      ImageReadParam param,
                      FilterType filterType)

asBufferedImage

public static BufferedImage asBufferedImage(Bitmap bitmap)

asBufferedImage

public static BufferedImage asBufferedImage(Bitmap bitmap,
                            FilterType filterType)

asBufferedImage

public static BufferedImage asBufferedImage(Bitmap bitmap,
                            ImageReadParam param,
                            FilterType filterType)

extract

public static Bitmap extract(Rectangle roi,
             Bitmap src)

Returns the specified rectangle area of the bitmap.

Parameters:

roi - - A Rectangle that specifies the requested image section.

Returns:

A Bitmap that represents the requested image section.

subsample

public static Bitmap subsample(Bitmap src,
               ImageReadParam param)

subsampleX

public static Bitmap subsampleX(Bitmap src,
                int xSubsampling,
                int xSubsamplingOffset)

subsampleY

public static Bitmap subsampleY(Bitmap src,
                int ySubsampling,
                int ySubsamplingOffset)

combineBytes

public static byte combineBytes(byte value1,
                byte value2,
                CombinationOperator op)

The method combines two given bytes with an logical operator.

The JBIG2 Standard specifies 5 possible combinations of bytes.

Hint: Please take a look at ISO/IEC 14492:2001 (E) for detailed definition and description of the operators.

Parameters:

value1 - - The value that should be combined with value2.

value2 - - The value that should be combined with value1.

op - - The specified combination operator.

Returns:

The combination result.

blit

public static void blit(Bitmap src,
        Bitmap dst,
        int x,
        int y,
        CombinationOperator combinationOperator)

This method combines a given bitmap with the current instance.

Parts of the bitmap to blit that are outside of the target bitmap will be ignored.

Parameters:

src - - The bitmap that should be combined with the one of the current instance.

x - - The x coordinate where the upper left corner of the bitmap to blit should be positioned.

y - - The y coordinate where the upper left corner of the bitmap to blit should be positioned.

combinationOperator - - The combination operator for combining two pixels.