Package adams.gui.visualization.segmentation

Class ImageUtils

java.lang.Object

adams.gui.visualization.segmentation.ImageUtils

public class ImageUtils
extends Object

Helper class for image related operations.

Author:

FracPete (fracpete at waikato dot ac dot nz)

Constructor Summary

Constructors

Constructor	Description
ImageUtils()

Method Summary

Modifier and Type	Method	Description
static void	combineImages(BufferedImage source, BufferedImage target)	Transfers all the non-black pixels from the source image into the target one.
static void	fill(BufferedImage image, Point n, Color targetColor, Color replacementColor)	Performs flood-fill on the provided image.
static void	initImage(BufferedImage image, Color color)	Replaces any non-black pixels with the specified color.
static BufferedImage	newImage(int width, int height)	Creates a new image with just black pixels.
static boolean	replaceColor(int[] pixels, int width, int height, Color oldColor, Color newColor, int[] rangeX, int[] rangeY)	Replaces the old color with the new one.
static boolean	replaceColor(int[] pixels, Color oldColor, Color newColor)	Replaces the old color with the new one.
static boolean	replaceColor(BufferedImage image, Color oldColor, Color newColor)	Replaces the old color with the new one.
static boolean	replaceColor(BufferedImage image, Color oldColor, Color newColor, int[] rangeX, int[] rangeY)	Replaces the old color with the new one.
protected static boolean	requiresReplacement(int pixel, Integer target, int replacement)	Checks whether the pixel requires replacement.

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageUtils

public ImageUtils()

Method Detail

combineImages

public static void combineImages(BufferedImage source,
                                 BufferedImage target)

Transfers all the non-black pixels from the source image into the target one.

Parameters:

source - the source image

target - the target image

replaceColor

public static boolean replaceColor(int[] pixels,
                                   Color oldColor,
                                   Color newColor)

Replaces the old color with the new one.

Parameters:

pixels - the pixels to process

oldColor - the old color to replace

newColor - the replacement color

Returns:

true if modified

replaceColor

public static boolean replaceColor(BufferedImage image,
                                   Color oldColor,
                                   Color newColor)

Replaces the old color with the new one.

Parameters:

image - the image to process

oldColor - the old color to replace

newColor - the replacement color

Returns:

true if modified

replaceColor

public static boolean replaceColor(int[] pixels,
                                   int width,
                                   int height,
                                   Color oldColor,
                                   Color newColor,
                                   int[] rangeX,
                                   int[] rangeY)

Replaces the old color with the new one.

Parameters:

pixels - the pixels to process

width - the width of the image

height - the height of the image

oldColor - the old color to replace

newColor - the replacement color

rangeX - the sub-range of x coordinates to work on (both incl)

rangeY - the sub-range of y coordinates to work on (both incl)

Returns:

true if modified

replaceColor

public static boolean replaceColor(BufferedImage image,
                                   Color oldColor,
                                   Color newColor,
                                   int[] rangeX,
                                   int[] rangeY)

Replaces the old color with the new one.

Parameters:

image - the image to process

oldColor - the old color to replace

newColor - the replacement color

rangeX - the sub-range of x coordinates to work on (both incl)

rangeY - the sub-range of y coordinates to work on (both incl)

Returns:

true if modified

initImage

public static void initImage(BufferedImage image,
                             Color color)

Replaces any non-black pixels with the specified color.

Parameters:

image - the image to process

color - the new color for non-black pixels

newImage

public static BufferedImage newImage(int width,
                                     int height)

Creates a new image with just black pixels.

Parameters:

width - the width of the image

height - the height of the image

requiresReplacement

protected static boolean requiresReplacement(int pixel,
                                             Integer target,
                                             int replacement)

Checks whether the pixel requires replacement. If target is not null, then the pixel must match that RGB value. If target is null, then the pixel must be difference from the replacement RGB value.

Parameters:

pixel - the pixel to check

target - the target RGB to replace, can be null

replacement - the replacement RGB to use

Returns:

true if pixel requires replacing

fill

public static void fill(BufferedImage image,
                        Point n,
                        Color targetColor,
                        Color replacementColor)

Performs flood-fill on the provided image. Based on pseudo code from here: https://en.wikipedia.org/wiki/Flood_fill#Alternative_implementations

Parameters:

image - the image to update

n - the starting point

targetColor - the color to replace, can be null to apply to any color

replacementColor - the replacement color