no.hiof.imagepr.filters
Class ImageScaler

java.lang.Object
  no.hiof.imagepr.filters.ImageScaler

All Implemented Interfaces:

ImageFilter

public class ImageScaler

extends java.lang.Object

implements ImageFilter

This class takes data-matrices and can perform scale operations on them. One can choose either to use "Nearest neighbour"-interpolation for to get a jaggy look or "Bi-linear interpolation" for smoother scaling.

The class is adjusted to version 2 of the API by Per-Olav Rus�s.

Author:

Rune Andre Melgaard, Mads Hansen, Chao-Ching, Mai Burner.

Field Summary

static int	BILINEAR
static int	NEAREST

Constructor Summary

ImageScaler(double scaleVertical, double scaleHorizontal, int interpolType)
Constructor for an ImageScaler.

ImageScaler(double scale, int interpolType)
Constructor for an ImageScaler.

Method Summary

Image	filter(Image image) Perform the scaling on a an image, which may be a RGBImage, IntensityImage or HSIImage.
short[][]	filter(short[][] matrix) Perform the scaling on a matrix of pixel values.

Methods inherited from class java.lang.Object

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

Field Detail

NEAREST

public static final int NEAREST

See Also:

Constant Field Values

BILINEAR

public static final int BILINEAR

See Also:

Constant Field Values

Constructor Detail

ImageScaler

public ImageScaler(double scaleVertical,
                   double scaleHorizontal,
                   int interpolType)

Constructor for an ImageScaler. The parameter interpolType may be either NEAREST or BILINEAR.

Parameters:

scaleVertical - Vertical scale.

scaleHorizontal - Horizontal scale.

interpolType - Type of interpolation.

ImageScaler

public ImageScaler(double scale,
                   int interpolType)

Constructor for an ImageScaler. The parameter interpolType may be either NEAREST or BILINEAR.

Parameters:

scale - The scale in both vertical and horizontal directions.

interpolType - Type of interpolation.

Method Detail

filter

public short[][] filter(short[][] matrix)

Perform the scaling on a matrix of pixel values.

Specified by:

filter in interface ImageFilter

Parameters:

matrix - The original matrix.

Returns:

The scaled matrix.

filter

public Image filter(Image image)

Perform the scaling on a an image, which may be a RGBImage, IntensityImage or HSIImage. Scaling for BinaryImage is not implemented.

Specified by:

filter in interface ImageFilter

Parameters:

image - The original image.

Returns:

The scaled image