org.carrot2.util

Class BufferedImageUtils

java.lang.Object

org.carrot2.util.BufferedImageUtils

public class BufferedImageUtils
extends Object

Various utility methods for working with BufferedImages.

Method Summary

Methods

Modifier and Type	Method and Description
static int	countDistictColors(BufferedImage image) Returns the number of distinct colors (excluding transparency) in the image.
static void	drawImage(BufferedImage image, BufferedImage canvas, int x, int y) Draws image on the canvas placing the top left corner of image at x / y offset from the top left corner of canvas.
static int[]	getDistictColors(BufferedImage image) Returns the image's distinct colors in an RGB format, discarding transparency information.
static int[]	getDistictColors(BufferedImage image, int padding) Returns the image's distinct colors in an RGB format, discarding transparency information.
static int[][]	getRgb(BufferedImage image) Returns a two dimensional array of the image's RGB values, including transparency.
static boolean	hasPartialTransparency(BufferedImage image) Returns true if the provided image has partially transparent areas (alpha channel).
static boolean	hasTransparency(BufferedImage image) Returns true if the provided image has any kind of transparent areas
static BufferedImage	matte(BufferedImage source, Color matteColor) Performs matting of the source image using matteColor.

Methods inherited from class java.lang.Object

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

Method Detail

hasPartialTransparency

public static boolean hasPartialTransparency(BufferedImage image)

Returns true if the provided image has partially transparent areas (alpha channel).

hasTransparency

public static boolean hasTransparency(BufferedImage image)

Returns true if the provided image has any kind of transparent areas

countDistictColors

public static int countDistictColors(BufferedImage image)

Returns the number of distinct colors (excluding transparency) in the image.

getDistictColors

public static int[] getDistictColors(BufferedImage image)

Returns the image's distinct colors in an RGB format, discarding transparency information.

getDistictColors

public static int[] getDistictColors(BufferedImage image,
                     int padding)

Returns the image's distinct colors in an RGB format, discarding transparency information. Adds padding empty slots at the beginning of the returned array.

getRgb

public static int[][] getRgb(BufferedImage image)

Returns a two dimensional array of the image's RGB values, including transparency.

matte

public static BufferedImage matte(BufferedImage source,
                  Color matteColor)

Performs matting of the source image using matteColor. Matting is rendering partial transparencies using solid color as if the original image was put on top of a bitmap filled with matteColor.

drawImage

public static void drawImage(BufferedImage image,
             BufferedImage canvas,
             int x,
             int y)

Draws image on the canvas placing the top left corner of image at x / y offset from the top left corner of canvas.