Package net.sourceforge.jiu.filters
Class MinimumFilter
java.lang.Object
net.sourceforge.jiu.ops.Operation
net.sourceforge.jiu.ops.ImageToImageOperation
net.sourceforge.jiu.filters.AreaFilterOperation
net.sourceforge.jiu.filters.MinimumFilter
Filter operation that replaces each sample by the minimum value of itself
and its neighbors.
See
MaximumFilter
for a usage example.- Since:
- 0.9.0
- Author:
- Marco Schmidt
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Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionfinal int
computeSample
(int[] samples, int numSamples) Determine the resulting sample for an array with the source sample and zero or more of its neighbors.Methods inherited from class net.sourceforge.jiu.filters.AreaFilterOperation
checkAreaHeight, checkAreaWidth, getAreaHeight, getAreaWidth, process, setArea, setAreaHeight, setAreaWidth
Methods inherited from class net.sourceforge.jiu.ops.ImageToImageOperation
canInputAndOutputBeEqual, ensureImagesHaveSameResolution, ensureInputImageIsAvailable, ensureOutputImageResolution, getInputImage, getOutputImage, setCanInputAndOutputBeEqual, setInputImage, setOutputImage
Methods inherited from class net.sourceforge.jiu.ops.Operation
addProgressListener, addProgressListeners, getAbort, removeProgressListener, setAbort, setProgress, setProgress
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Constructor Details
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MinimumFilter
public MinimumFilter()
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Method Details
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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 holdnumSamples
samples, which will be stored starting at offset0
.Normally,
numSamples
is equal toAreaFilterOperation.getAreaWidth()
timesAreaFilterOperation.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 classAreaFilterOperation
- Parameters:
samples
- the array holding the sample(s)numSamples
- number of samples in the array- Returns:
- sample to be written to the output image
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