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java.lang.Objectnet.sourceforge.jiu.color.data.NaiveHistogram3D
public class NaiveHistogram3D
A class for a three-dimensional histogram that allocates one int
value
per counter at construction time.
This means that a histogram with 8 bits for each channel will have
28 + 8 + 8 = 224 = 16,777,216 int values,
making it 64 MB large.
Constructor Summary | |
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NaiveHistogram3D(int numValues)
Creates a histogram with the same number of values for all three dimensions. |
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NaiveHistogram3D(int numValuesLevel1,
int numValuesLevel2,
int numValuesLevel3)
Creates a histogram |
Method Summary | |
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void |
clear()
Sets all counters to zero. |
int |
getEntry(int index1,
int index2,
int index3)
Returns the counter value of (index1, index2, index3). |
int |
getMaxValue(int index)
Returns the maximum index value for one of the three indexes. |
int |
getNumUsedEntries()
Returns the number of used entries (those entries with a counter value larger than zero). |
void |
increaseEntry(int index1,
int index2,
int index3)
Increases the counter value of (index1, index2, index3) by one. |
void |
setEntry(int index1,
int index2,
int index3,
int newValue)
Sets the counter value of (index1, index2, index3) to newValue. |
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 NaiveHistogram3D(int numValuesLevel1, int numValuesLevel2, int numValuesLevel3) throws IllegalArgumentException, OutOfMemoryError
IllegalArgumentException
OutOfMemoryError
public NaiveHistogram3D(int numValues) throws IllegalArgumentException, OutOfMemoryError
(int, int, int)
, repeating numValues
three times.
numValues
- the number of levels for all three dimensions
IllegalArgumentException
OutOfMemoryError
Method Detail |
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public void clear()
clear
in interface Histogram3D
public int getEntry(int index1, int index2, int index3) throws IllegalArgumentException
getEntry
in interface Histogram3D
index1
- first of the three values forming the threedimensional indexindex2
- second of the three values forming the threedimensional indexindex3
- three of the three values forming the threedimensional index
IllegalArgumentException
- could be (read: need not necessarily) be
thrown if the index formed by the arguments is invalidpublic int getMaxValue(int index) throws IllegalArgumentException
Histogram3D
getMaxValue
in interface Histogram3D
IllegalArgumentException
- if the index formed by the arguments is invalidpublic int getNumUsedEntries()
getNumUsedEntries
in interface Histogram3D
public void increaseEntry(int index1, int index2, int index3) throws IllegalArgumentException
setEntry(index1, index2, index3, getEntry(index1, index2, index3) + 1);
However, this method is expected to be faster in some contexts.
increaseEntry
in interface Histogram3D
index1
- first of the three values forming the threedimensional indexindex2
- second of the three values forming the threedimensional indexindex3
- three of the three values forming the threedimensional index
IllegalArgumentException
- could be (read: need not necessarily) be
thrown if the index formed by the arguments is invalidpublic void setEntry(int index1, int index2, int index3, int newValue) throws IllegalArgumentException
setEntry
in interface Histogram3D
index1
- first of the three values forming the threedimensional indexindex2
- second of the three values forming the threedimensional indexindex3
- three of the three values forming the threedimensional indexnewValue
- the counter value that is assigned to the argument index
IllegalArgumentException
- could be (read: need not necessarily) be
thrown if the index formed by the first three arguments is invalid
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