net.aerith.misao.image.filter
Class BloomingCancelFilter

java.lang.Object
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  +--net.aerith.misao.image.filter.Filter
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        +--net.aerith.misao.image.filter.BloomingCancelFilter

public class BloomingCancelFilter

extends Filter

The BloomingCancelFilter is an image processing filter to cancel the blooming. The result is stored in the original image.

In the case both the blooming and streaks appear, operate the StreakCancelFilter at first, then operate this BloomingCancelFilter.

There are some requirements.

• The blooming must stretch vertically.
• In the process, the background of the image is assumed to be a constant value. So the image must be flat.
• The highest pixel value is regarded as saturated, even if no star is really saturated.
• The star center of every blooming star must be in the image.
• Every blooming star must be separated. Two blooming lines of two stars must not be blended.

Inner Class Summary

protected class

BloomingCancelFilter.BloomingStar The BloomingStar is a set of adjoining pixels, peak value, center position and radius of a blooming star.

Field Summary

protected MonoImage	blooming_flag_image The blooming flag image.
protected Position[]	blooming_positions The list of blooming star positions.
protected double	blooming_threshold_ratio The threshold ratio to regard a pixel is saturated.
protected boolean	keep_blooming_flag_image True when to keep the blooming flag image.
protected static int	LEFT The value of influenced direction which represents left.
protected static int	RIGHT The value of influenced direction which represents right.

Fields inherited from class net.aerith.misao.image.filter.Filter

monitor_set

Constructor Summary

BloomingCancelFilter()
Constructs a filter.

Method Summary

MonoImage	getBloomingFlagImage() Gets the blooming flag image.
Position[]	getBloomingPositions() Gets the list of blooming star positions.
void	keepBloomingFlagImage() Sets the flag to keep the blooming flag image.
MonoImage	operate(MonoImage image) Operates the image processing filter and stores the result into the original image buffer.

Methods inherited from class net.aerith.misao.image.filter.Filter

addMonitor, setMonitor

Methods inherited from class java.lang.Object

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

Field Detail

blooming_threshold_ratio

protected double blooming_threshold_ratio

The threshold ratio to regard a pixel is saturated. When 1.0, only the biggest pixels are regarded as saturated.

keep_blooming_flag_image

protected boolean keep_blooming_flag_image

True when to keep the blooming flag image.

LEFT

protected static final int LEFT

The value of influenced direction which represents left.

RIGHT

protected static final int RIGHT

The value of influenced direction which represents right.

blooming_flag_image

protected MonoImage blooming_flag_image

The blooming flag image.

blooming_positions

protected Position[] blooming_positions

The list of blooming star positions.

Constructor Detail

BloomingCancelFilter

public BloomingCancelFilter()

Constructs a filter.

Method Detail

keepBloomingFlagImage

public void keepBloomingFlagImage()

Sets the flag to keep the blooming flag image.

getBloomingFlagImage

public MonoImage getBloomingFlagImage()

Gets the blooming flag image. This is only for debugging use. The flag is 2 if the pixel is saturated, 1 if the pixel is also blooming, not saturated but adjoining to the saturated pixels, and 0 if not blooming.

Returns:

the blooming flag image.

getBloomingPositions

public Position[] getBloomingPositions()

Gets the list of blooming star positions.

Returns:

the list of blooming star positions.

operate

public MonoImage operate(MonoImage image)

Operates the image processing filter and stores the result into the original image buffer.

There are some requirements.

• The blooming must stretch vertically.
• In the process, the background of the image is assumed to be a constant value. So the image must be flat.
• The highest pixel value is regarded as saturated, even if no star is really saturated.
• The star center of every blooming star must be in the image.
• Every blooming star must be separated. Two blooming lines of two stars must not be blended.

The process in this method assumes that the blooming influences badly towards right. But in the case it does towards left, the image is automatically reversed and processed properly.

Overrides:

operate in class Filter

Parameters:

image - the original image to process.

Returns:

the original image buffer.