Package io.jans.util.image

Class ImageTransformationUtility

java.lang.Object

io.jans.util.image.ImageTransformationUtility

public final class ImageTransformationUtility
extends Object

Utility to do high quality image resize

Author:

Yuriy Movchan Date: 11.03.2010

Method Summary

Modifier and Type	Method	Description
static BufferedImage	scaleImage(BufferedImage img, int maxWidth, int maxHeight)
static BufferedImage	scaleImage(BufferedImage img, int maxWidth, int maxHeight, Object hint, boolean higherQuality)	Convenience method that returns a scaled instance of the provided BufferedImage.

Methods inherited from class java.lang.Object

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

Method Details

scaleImage

public static BufferedImage scaleImage(BufferedImage img,
 int maxWidth,
 int maxHeight)

Parameters:

img - the original image to be scaled

maxWidth - the desired width of the scaled instance, in pixels

maxHeight - the desired height of the scaled instance, in pixels

Returns:

a scaled version of the original BufferedImage

scaleImage

public static BufferedImage scaleImage(BufferedImage img,
 int maxWidth,
 int maxHeight,
 Object hint,
 boolean higherQuality)

Convenience method that returns a scaled instance of the provided BufferedImage.

Parameters:

img - the original image to be scaled

maxWidth - the desired width of the scaled instance, in pixels

maxHeight - the desired height of the scaled instance, in pixels

hint - one of the rendering hints that corresponds to RenderingHints.KEY_INTERPOLATION (e.g. RenderingHints.VALUE_INTERPOLATION_NEAREST_NEIGHBOR, RenderingHints.VALUE_INTERPOLATION_BILINEAR, RenderingHints.VALUE_INTERPOLATION_BICUBIC)

higherQuality - if true, this method will use a multi-step scaling technique that provides higher quality than the usual one-step technique (only useful in downscaling cases, where targetWidth or targetHeight is smaller than the original dimensions, and generally only when the BILINEAR hint is specified)

Returns:

a scaled version of the original BufferedImage