Class BrightnessContrastFilter
- java.lang.Object
-
- java.awt.image.ImageFilter
-
- java.awt.image.RGBImageFilter
-
- com.twelvemonkeys.image.BrightnessContrastFilter
-
- All Implemented Interfaces:
java.awt.image.ImageConsumer
,java.lang.Cloneable
public class BrightnessContrastFilter extends java.awt.image.RGBImageFilter
Adjusts the contrast and brightness of an image.For brightness, the valid range is
-2.0,..,0.0,..,2.0
. A value of0.0
means no change. Negative values will make the pixels darker. Maximum negative value (-2
) will make all filtered pixels black. Positive values will make the pixels brighter. Maximum positive value (2
) will make all filtered pixels white.For contrast, the valid range is
-1.0,..,0.0,..,1.0
. A value of0.0
means no change. Negative values will reduce contrast. Maximum negative value (-1
) will make all filtered pixels grey (no contrast). Positive values will increase contrast. Maximum positive value (1
) will make all filtered pixels primary colors (either black, white, cyan, magenta, yellow, red, blue or green).- Version:
- $Id: //depot/branches/personal/haraldk/twelvemonkeys/release-2/twelvemonkeys-core/src/main/java/com/twelvemonkeys/image/BrightnessContrastFilter.java#1 $
- Author:
- Harald Kuhr, last modified by $Author: haku $
-
-
Constructor Summary
Constructors Constructor Description BrightnessContrastFilter()
Creates a BrightnessContrastFilter with default values (brightness=0.3, contrast=0.3
).BrightnessContrastFilter(float pBrightness, float pContrast)
Creates a BrightnessContrastFilter with the given values for brightness and contrast.
-
Method Summary
All Methods Instance Methods Concrete Methods Modifier and Type Method Description int
filterRGB(int pX, int pY, int pARGB)
Filters one pixel, adjusting brightness and contrast according to this filter.-
Methods inherited from class java.awt.image.RGBImageFilter
filterIndexColorModel, filterRGBPixels, setColorModel, setPixels, setPixels, substituteColorModel
-
-
-
-
Constructor Detail
-
BrightnessContrastFilter
public BrightnessContrastFilter()
Creates a BrightnessContrastFilter with default values (brightness=0.3, contrast=0.3
).This will slightly increase both brightness and contrast.
-
BrightnessContrastFilter
public BrightnessContrastFilter(float pBrightness, float pContrast)
Creates a BrightnessContrastFilter with the given values for brightness and contrast.For brightness, the valid range is
-2.0,..,0.0,..,2.0
. A value of0.0
means no change. Negative values will make the pixels darker. Maximum negative value (-2
) will make all filtered pixels black. Positive values will make the pixels brighter. Maximum positive value (2
) will make all filtered pixels white.For contrast, the valid range is
-1.0,..,0.0,..,1.0
. A value of0.0
means no change. Negative values will reduce contrast. Maximum negative value (-1
) will make all filtered pixels grey (no contrast). Positive values will increase contrast. Maximum positive value (1
) will make all filtered pixels primary colors (either black, white, cyan, magenta, yellow, red, blue or green).- Parameters:
pBrightness
- adjust the brightness of the image, in the range-2.0,..,0.0,..,2.0
.pContrast
- adjust the contrast of the image, in the range-1.0,..,0.0,..,1.0
.
-
-
Method Detail
-
filterRGB
public int filterRGB(int pX, int pY, int pARGB)
Filters one pixel, adjusting brightness and contrast according to this filter.- Specified by:
filterRGB
in classjava.awt.image.RGBImageFilter
- Parameters:
pX
- xpY
- ypARGB
- pixel value in default color space- Returns:
- the filtered pixel value in the default color space
-
-