net.sourceforge.javaocr.filter
Class RGBAToGrayscale

java.lang.Object
  net.sourceforge.javaocr.filter.AbstractSinglePixelFilter
      net.sourceforge.javaocr.filter.RGBAToGrayscale

All Implemented Interfaces:

ImageFilter

public class RGBAToGrayscale
extends AbstractSinglePixelFilter

converts RGBA image to grayscale

Author:

Konstantin Pribluda

Field Summary

(package private) int	cB
(package private) int	cG
(package private) int	cR

Constructor Summary

RGBAToGrayscale()
construct with default coefficients (306,601,117)

RGBAToGrayscale(int cR, int cG, int cB)
construct with weight coefficients.

Method Summary

protected void

processPixel(Image image) convert RGBA to grayscale

Methods inherited from class net.sourceforge.javaocr.filter.AbstractSinglePixelFilter

process

Methods inherited from class java.lang.Object

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

Field Detail

cR

final int cR

cG

final int cG

cB

final int cB

Constructor Detail

RGBAToGrayscale

public RGBAToGrayscale()

construct with default coefficients (306,601,117)

RGBAToGrayscale

public RGBAToGrayscale(int cR,
                       int cG,
                       int cB)

construct with weight coefficients. multiplication results are divided by 1024

Parameters:

cR -

cG -

cB -

Method Detail

processPixel

protected void processPixel(Image image)

convert RGBA to grayscale

Specified by:

processPixel in class AbstractSinglePixelFilter

Parameters:

image - to be processed