net.sourceforge.jiu.filters
Class OilFilter
java.lang.Object
net.sourceforge.jiu.ops.Operation
net.sourceforge.jiu.ops.ImageToImageOperation
net.sourceforge.jiu.filters.AreaFilterOperation
net.sourceforge.jiu.filters.OilFilter
public class OilFilter
- extends AreaFilterOperation
Applies a filter that makes the image look like an oil painting.
This is accomplished by creating a histogram of the neighboring samples
for each input sample and storing the value that occurs most often
in the output image.
If two or more samples occur an equal number of times, the lowest
sample value is picked.
Supported image types
Can process both GrayIntegerImage
and
RGBIntegerImage
.
Note that this operation becomes very slow with 16 bits per sample
because a lot of runs over a 65536 element array are necessary.
Usage example
PixelImage image = ...; // some GrayIntegerImage or RGBIntegerImage
OilFilter filter = new OilFilter();
filter.setArea(5, 5);
filter.setInputImage(image);
filter.process();
PixelImage filteredImage = filter.getOutputImage();
Credits
Idea taken from the
Oil class of Jef Poskanzer's ACME package.
- Author:
- Marco Schmidt
Method Summary |
int |
computeSample(int[] samples,
int numSamples)
Determine the resulting sample for an array with the source sample
and zero or more of its neighbors. |
void |
process()
This method does the actual work of the operation. |
Methods inherited from class java.lang.Object |
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
OilFilter
public OilFilter()
computeSample
public final int computeSample(int[] samples,
int numSamples)
- Description copied from class:
AreaFilterOperation
- Determine the resulting sample for an array with the source sample
and zero or more of its neighbors.
This abstract method must be implemented by classes extending this operation.
The array will hold
numSamples
samples, which will be stored
starting at offset 0
.
Normally, numSamples
is equal to AreaFilterOperation.getAreaWidth()
times AreaFilterOperation.getAreaHeight()
.
Near the border of the image you may get less samples.
Example: the top left sample of an image has only three neighbors (east, south-east and south),
so you will only get four samples (three neighbors and the sample itself).
- Specified by:
computeSample
in class AreaFilterOperation
- Parameters:
samples
- the array holding the sample(s)numSamples
- number of samples in the array
- Returns:
- sample to be written to the output image
process
public void process()
throws MissingParameterException,
WrongParameterException
- Description copied from class:
Operation
- This method does the actual work of the operation.
It must be called after all parameters have been given to the operation object.
- Overrides:
process
in class AreaFilterOperation
- Throws:
MissingParameterException
- if any mandatory parameter was not given to the operation
WrongParameterException
- if at least one of the input parameters was
not initialized appropriately (values out of the valid interval, etc.)
Copyright © 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007 Marco Schmidt