net.aerith.misao.util
Class Histogram

java.lang.Object
  |
  +--net.aerith.misao.util.Histogram

public class Histogram

extends java.lang.Object

implements Statisticable

The Histogram represents a histogram of the specified statisticable buffer.

Field Summary

protected int[]

buffer The buffer.

Constructor Summary

protected	Histogram() Constructs an empty Histogram.
	Histogram(Statisticable target_buffer, double minimum_value, double maximum_value, int division_count) Constructs a Histogram of the specified statisticable buffer.

Method Summary

Histogram	accumulate() Accumulates the amount values in this histogram and creates a new Histogram.
Array	createCloneArray() Creates a clone Array.
int	getAt(int index) Gets the amount of pixels at the block of the specified index.
int	getDataCount() Gets the number of data.
int	getOverflow() Gets the amount of pixels whose value is greater than the specified maximum value.
int	getUnderflow() Gets the amount of pixels whose value is smaller than the specified minimum value.
double	getValueAt(int index) Gets the value of data at the specified location.
double	lookup(double index) Looks up this histogram and gets the amount value of the specified index.
double	lookupInversed(double value) Looks up the inversed histogram and gets the index of the specified amount value.

Methods inherited from class java.lang.Object

, clone, equals, finalize, getClass, hashCode, notify, notifyAll, registerNatives, toString, wait, wait, wait

Field Detail

buffer

protected int[] buffer

The buffer.

Constructor Detail

Histogram

protected Histogram()

Constructs an empty Histogram.

Histogram

public Histogram(Statisticable target_buffer,
                 double minimum_value,
                 double maximum_value,
                 int division_count)

Constructs a Histogram of the specified statisticable buffer.

Parameters:

target_buffer - the statisticable buffer to calculate histogram.

minimum_value - the minimum value of the histogram range.

maximum_value - the maximum value of the histogram range.

division_count - the division_count;

Method Detail

getDataCount

public int getDataCount()

Gets the number of data.

Specified by:

getDataCount in interface Statisticable

Returns:

the number of data.

getValueAt

public double getValueAt(int index)
                  throws java.lang.IndexOutOfBoundsException

Gets the value of data at the specified location.

Specified by:

getValueAt in interface Statisticable

Parameters:

index - the location of the data.

Returns:

the value of data at the specified location.

Throws:

java.lang.IndexOutOfBoundsException - if specified location is out of the data buffer.

getUnderflow

public int getUnderflow()

Gets the amount of pixels whose value is smaller than the specified minimum value.

Returns:

the amount.

getOverflow

public int getOverflow()

Gets the amount of pixels whose value is greater than the specified maximum value.

Returns:

the amount.

getAt

public int getAt(int index)

Gets the amount of pixels at the block of the specified index.

Parameters:

index - the index.

Returns:

the amount.

lookup

public double lookup(double index)

Looks up this histogram and gets the amount value of the specified index.

Parameters:

the - index of buffer to look up.

Returns:

the amount value.

lookupInversed

public double lookupInversed(double value)

Looks up the inversed histogram and gets the index of the specified amount value.

Parameters:

value - the amount value to look up.

Returns:

the index of buffer which contains the specified amount value.

accumulate

public Histogram accumulate()

Accumulates the amount values in this histogram and creates a new Histogram.

Returns:

the new histogram.

createCloneArray

public Array createCloneArray()

Creates a clone Array.

Returns:

the new array.