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java.lang.Objectnet.sourceforge.jiu.ops.Operation
net.sourceforge.jiu.color.analysis.TextureAnalysis
public class TextureAnalysis
This class determines a number of properties for a given co-occurrence matrix.
The only input parameter is a mandatory co-occurrence matrix object
to be specified using setMatrix(net.sourceforge.jiu.color.data.CoOccurrenceMatrix)
.
Then process()
must be called.
After that, the various properties can be retrieved using the
corresponding get methods, e.g. getContrast()
,
getEnergy()
etc.
Static convenience methods compute(CoOccurrenceMatrix)
and
compute(IntegerImage, int)
exist for simplified usage.
You may need to cast your PixelImage
to
IntegerImage
first.
GrayIntegerImage img = ...; TextureAnalysis op = TextureAnalysis.compute(img); System.out.println("Entropy=" + op.getEntropy());Use the compute method that takes a
CoOccurrenceFrequencyMatrix
if you want to reuse a matrix object.
Will not work with 16 bit image objects because MemoryCoOccurrenceMatrix
is rather unsophisticated, trying to allocate 4 * 65536 * 65536 bytes (16 GB).
Solution is an implementation of CoOccurrenceMatrix
which creates element counters on demand.
The following resources were helpful when creating this class:
Constructor Summary | |
---|---|
TextureAnalysis()
|
Method Summary | |
---|---|
static TextureAnalysis |
compute(CoOccurrenceMatrix matrix)
Create a TextureAnalysis operation with the results computed from a given matrix. |
static TextureAnalysis |
compute(IntegerImage image,
int channelIndex)
For one channel of the argument image, create a TextureAnalysis operation with all attributes |
int |
getContrast()
Returns the contrast value determined in process() . |
double |
getCorrelation()
Returns the correlation determined in process() . |
int |
getDissimilarity()
Returns the dissimilarity value determined in process() . |
int |
getEnergy()
Returns the energy value determined in process() . |
double |
getEntropy()
Returns the entropy value determined in process() . |
double |
getHomogeneity()
Returns the homogeneity value determined in process() . |
int |
getSum()
Returns the sum of all entries in the matrix. |
boolean |
isSymmetrical()
|
void |
process()
Run over the input matrix and determine contrast, energy, entropy and homogeneity of that matrix. |
void |
setMatrix(CoOccurrenceMatrix m)
Sets the matrix to be used by this operation to the argument value. |
Methods inherited from class net.sourceforge.jiu.ops.Operation |
---|
addProgressListener, addProgressListeners, getAbort, removeProgressListener, setAbort, setProgress, setProgress |
Methods inherited from class java.lang.Object |
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clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
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public TextureAnalysis()
Method Detail |
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public static TextureAnalysis compute(CoOccurrenceMatrix matrix) throws MissingParameterException
matrix
- co-occurrence matrix to use for texture analysis
MissingParameterException
- if matrix is nullpublic static TextureAnalysis compute(IntegerImage image, int channelIndex) throws MissingParameterException
image
- the IntegerImage for which the texture analysis is being donechannelIndex
- zero-based index of channel to work on
MissingParameterException
- if matrix is nullpublic int getContrast()
process()
.
Also called inertia.
public double getCorrelation()
process()
.
public int getDissimilarity()
process()
.
public int getEnergy()
process()
.
public double getEntropy()
process()
.
public double getHomogeneity()
process()
.
Also called inverse difference moment.
public int getSum()
public boolean isSymmetrical()
public void process() throws MissingParameterException
process
in class Operation
MissingParameterException
- if no co-occurrence matrix was provided using
setMatrix(net.sourceforge.jiu.color.data.CoOccurrenceMatrix)
public void setMatrix(CoOccurrenceMatrix m)
m
- the matrix for which the various properties will be computed
|
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