net.sourceforge.jiu.color
Class Invert
java.lang.Object
net.sourceforge.jiu.ops.Operation
net.sourceforge.jiu.ops.ImageToImageOperation
net.sourceforge.jiu.color.Invert
public class Invert
- extends ImageToImageOperation
Creates an inverted (negated) version of an image.
This is done by subtracting each sample value of a channel
from the maximum sample for that channel.
The maximum sample for a channel is given by
IntegerImage.getMaxSample(int)
.
For paletted images, just the palette is treated that way.
Supported image types: IntegerImage
.
Input and output image can be the same object.
Usage
There are two ways of using this class.
Either create an Invert object and set all paramters yourself.
This lets you reuse image objects or add a progress listener.
Invert invert = new Invert();
invert.setInputImage(image);
invert.addProgressListener(listener); // this is optional
invert.process();
PixelImage invertedImage = invert.getOutputImage();
The other method is by sing the static convenience method
PixelImage invertedImage = Invert.invert(someImage);
You will have to catch the potential exceptions in both cases.
- Author:
- Marco Schmidt
Method Summary |
static PixelImage |
invert(PixelImage inputImage)
Helper method to return an inverted image from the argument image. |
void |
process()
Inverts the input image, reusing an output image if one has been specified. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Invert
public Invert()
invert
public static PixelImage invert(PixelImage inputImage)
throws OperationFailedException
- Helper method to return an inverted image from the argument image.
- Parameters:
inputImage
- image to be inverted
- Returns:
- new image object with inverted image
- Throws:
OperationFailedException
- on operation errors
process
public void process()
throws MissingParameterException,
WrongParameterException
- Inverts the input image, reusing an output image if one has been specified.
For paletted images, inverts the palette.
For all other types, subtracts each sample of each channel from the maximum
value of that channel.
- Overrides:
process
in class Operation
- Throws:
MissingParameterException
- if the input image is missing
WrongParameterException
- if any of the specified image parameters are unsupported or of the wrong width or height
Copyright © 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Marco Schmidt