org.jpedal.images

Class SamplingFactory

java.lang.Object

org.jpedal.images.SamplingFactory

public class SamplingFactory
extends Object

Field Summary

Fields

Modifier and Type	Field and Description
static int	downsampleLevel current setting - do not set directly
static int	high (default setting) high will agressively reduce images bigger than twice their drawn size at 100% so a image which appears as 100x100 on the PDF but whose raw images is 250x250 will be stored as 125x125 image and not a 250x250 image
static int	highAndSharpen (default setting) high will agressively reduce images bigger than twice their drawn size at 100% so a image which appears as 100x100 on the PDF but whose raw images is 250x250 will be stored as 125x125 image and not a 250x250 image
static boolean	isPrintDownsampleEnabled current setting - do not set directly
static boolean	kernelSharpen
static int	medium medium will make sure images larger than page are reduced in size (often large scanned tiffs)
static int	mediumAndSharpen medium will make sure images larger than page are reduced in size (often large scanned tiffs)
static int	none do nothing
static int	print_disable do not use down-sampling on printing
static int	print_enable use down-sampling on printing (which is default)

Constructor Summary

Constructors

Constructor and Description
SamplingFactory()

Method Summary

Modifier and Type	Method and Description
static double[][]	getSharpenKernel()
static void	setDownsampleMode(int newLevel) PDFs contain images which may often be much larger than the actual space they occupy and they are reduced to fit the space alters image sampling to speed up program and reduce memory with the strategies high, medium, none, enable_printing, disable_printing
static void	setDownsampleMode(String newLevel) PDFs contain images which may often be much larger than the actual space they occupy and they are reduced to fit the space alters image sampling to speed up program and reduce memory in with the strategies "high","medium", "none", "enable_printing", "disable_printing"
static void	setSharpenKernel(double[][] userKernel) allow user to over-ride default setting and set their own 3x3 kernel to sharpen down-sampled images

Methods inherited from class java.lang.Object

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

Field Detail

none

public static int none

do nothing

medium

public static final int medium

medium will make sure images larger than page are reduced in size (often large scanned tiffs)

See Also:

Constant Field Values

high

public static final int high

(default setting) high will agressively reduce images bigger than twice their drawn size at 100% so a image which appears as 100x100 on the PDF but whose raw images is 250x250 will be stored as 125x125 image and not a 250x250 image

See Also:

Constant Field Values

print_enable

public static final int print_enable

use down-sampling on printing (which is default)

See Also:

Constant Field Values

print_disable

public static final int print_disable

do not use down-sampling on printing

See Also:

Constant Field Values

mediumAndSharpen

public static final int mediumAndSharpen

medium will make sure images larger than page are reduced in size (often large scanned tiffs)

See Also:

Constant Field Values

highAndSharpen

public static final int highAndSharpen

(default setting) high will agressively reduce images bigger than twice their drawn size at 100% so a image which appears as 100x100 on the PDF but whose raw images is 250x250 will be stored as 125x125 image and not a 250x250 image

See Also:

Constant Field Values

downsampleLevel

public static int downsampleLevel

current setting - do not set directly

isPrintDownsampleEnabled

public static boolean isPrintDownsampleEnabled

current setting - do not set directly

kernelSharpen

public static boolean kernelSharpen

Constructor Detail

SamplingFactory

public SamplingFactory()

Method Detail

setDownsampleMode

public static void setDownsampleMode(String newLevel)

PDFs contain images which may often be much larger than the actual space they occupy and they are reduced to fit the space
alters image sampling to speed up program and reduce memory in with the strategies "high","medium", "none", "enable_printing", "disable_printing"

Parameters:

newLevel - A String value of image sampling strategies

setDownsampleMode

public static void setDownsampleMode(int newLevel)

PDFs contain images which may often be much larger than the actual space they occupy and they are reduced to fit the space
alters image sampling to speed up program and reduce memory with the strategies high, medium, none, enable_printing, disable_printing

Parameters:

newLevel - A String value of image sampling strategies

setSharpenKernel

public static void setSharpenKernel(double[][] userKernel)

allow user to over-ride default setting and set their own 3x3 kernel to sharpen down-sampled images

Parameters:

userKernel -

getSharpenKernel

public static double[][] getSharpenKernel()