Package org.hortonmachine.gears.utils.images

Class ImageUtilities

java.lang.Object

org.hortonmachine.gears.utils.images.ImageUtilities

public class ImageUtilities
extends Object

An utility class image handling.

Since:

0.7.9

Author:

Andrea Antonello (www.hydrologis.com)

Constructor Summary

Constructors

Constructor	Description
ImageUtilities()

Method Summary

Modifier and Type	Method	Description
static boolean	areEqual(BufferedImage img1, BufferedImage img2)
static BufferedImage	imageFromReader(org.geotools.coverage.grid.io.AbstractGridCoverage2DReader reader, int cols, int rows, double w, double e, double s, double n, org.opengis.referencing.crs.CoordinateReferenceSystem resampleCrs)	Read an image from a coverage reader.
static boolean	isAllOneColor(BufferedImage image)	Checks if an image is all of one color.
static BufferedImage	makeColorTransparent(BufferedImage bufferedImageToProcess, Color colorToMakeTransparent)	Make a color of the image transparent.
static BufferedImage	rendereImage2BufferedImage(RenderedImage renderedImage)
static BufferedImage	rotateImageByDegrees(BufferedImage img, double angle)
static BufferedImage	scaleImage(BufferedImage image, int newSize)	Scale an image to a given size maintaining the ratio.

Methods inherited from class java.lang.Object

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

Constructor Detail

ImageUtilities

public ImageUtilities()

Method Detail

scaleImage

public static BufferedImage scaleImage(BufferedImage image,
                                       int newSize)
                                throws Exception

Scale an image to a given size maintaining the ratio.

Parameters:

image - the image to scale.

newSize - the size of the new image (it will be used for the longer side).

Returns:

the scaled image.

Throws:

Exception

rotateImageByDegrees

public static BufferedImage rotateImageByDegrees(BufferedImage img,
                                                 double angle)

imageFromReader

public static BufferedImage imageFromReader(org.geotools.coverage.grid.io.AbstractGridCoverage2DReader reader,
                                            int cols,
                                            int rows,
                                            double w,
                                            double e,
                                            double s,
                                            double n,
                                            org.opengis.referencing.crs.CoordinateReferenceSystem resampleCrs)
                                     throws IOException

Read an image from a coverage reader.

Parameters:

reader - the reader.

cols - the expected cols.

rows - the expected rows.

w - west bound.

e - east bound.

s - south bound.

n - north bound.

Returns:

the image or null if unable to read it.

Throws:

IOException

makeColorTransparent

public static BufferedImage makeColorTransparent(BufferedImage bufferedImageToProcess,
                                                 Color colorToMakeTransparent)

Make a color of the image transparent.

Parameters:

bufferedImageToProcess - the image to extract the color from.

colorToMakeTransparent - the color to make transparent.

Returns:

the new image.

isAllOneColor

public static boolean isAllOneColor(BufferedImage image)

Checks if an image is all of one color.

Parameters:

image - the image to check.

Returns:

true if the image is all of the same color.

areEqual

public static boolean areEqual(BufferedImage img1,
                               BufferedImage img2)

rendereImage2BufferedImage

public static BufferedImage rendereImage2BufferedImage(RenderedImage renderedImage)