jjil.algorithm
Class RgbClip

java.lang.Object
  jjil.core.PipelineStage
      jjil.algorithm.RgbClip

public class RgbClip
extends PipelineStage

Pipeline stage performs color clipping, setting all pixels that do not meet the threshold test to 0, otherwise leaving them alone.

The test is abs(pixel.R - red) + abs(pixel.G - green) + abs(pixel.B - blue) < limit.

The test direction can be reversed using the dir parameter.

Author:

webb

Constructor Summary

RgbClip(byte r, byte g, byte b, int l, boolean dir)
Creates a new instance of RgbClip.

Method Summary

void	push(Image image) Clips the RGB image and sets all pixels that fail/pass the test (according to bDir) to 0.
void	setParameters(byte r, byte g, byte b, int l, boolean dir) Change the threshold parameters.
java.lang.String	toString() Return a string describing the clipping operation.

Methods inherited from class jjil.core.PipelineStage

getFront, isEmpty

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

RgbClip

public RgbClip(byte r,
               byte g,
               byte b,
               int l,
               boolean dir)

Creates a new instance of RgbClip. The clip test is defined here.

Parameters:

r - red value

g - green value

b - value

l - the threshold

dir - if true pixels that fail test are set to 0; if false pixels that pass test are set to 0.

Method Detail

push

public void push(Image image)
          throws Error

Clips the RGB image and sets all pixels that fail/pass the test (according to bDir) to 0.

Specified by:

push in class PipelineStage

Parameters:

image - the input image.

Throws:

Error - if the cropping window extends outside the input image, or the input image is not an RgbImage.

setParameters

public void setParameters(byte r,
                          byte g,
                          byte b,
                          int l,
                          boolean dir)

Change the threshold parameters.

Parameters:

r - red value

g - green value

b - value

l - the threshold

dir - if true pixels that fail test are set to 0; if false pixels that pass test are set to 0.

toString

public java.lang.String toString()

Return a string describing the clipping operation.

Overrides:

toString in class java.lang.Object

Returns:

the string describing the clipping operation.