org.jmage.filter.spatial
Class EdgeEnhancementFilter

java.lang.Object
  org.jmage.filter.spatial.ConvolutionFilter
      org.jmage.filter.spatial.Convolution3x3Filter
          org.jmage.filter.spatial.EdgeEnhancementFilter

All Implemented Interfaces:

ImageFilter

public class EdgeEnhancementFilter
extends Convolution3x3Filter

EdgeEnhancementFilter uses the Laplacian convolution matrix to highlight areas of rapid intensity change in the picture. The resulting image is then subtracted from the original image and as a result a picture with harder edge contrast is produced. This effect is also known as "Edge Enhancement" and is used widely in the video and dvd industry to master films for small tv screens.

Field Summary

protected static org.apache.log4j.Logger

log

Constructor Summary

EdgeEnhancementFilter()
Creates an EdgeEnhancementFilter

Method Summary

javax.media.jai.PlanarImage

filter(javax.media.jai.PlanarImage image) Filter the image

Methods inherited from class org.jmage.filter.spatial.ConvolutionFilter

normalize

Methods inherited from class java.lang.Object

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

Field Detail

log

protected static org.apache.log4j.Logger log

Constructor Detail

EdgeEnhancementFilter

public EdgeEnhancementFilter()

Creates an EdgeEnhancementFilter

Method Detail

filter

public javax.media.jai.PlanarImage filter(javax.media.jai.PlanarImage image)
                                   throws FilterException

Filter the image

Specified by:

filter in interface ImageFilter

Overrides:

filter in class Convolution3x3Filter

Parameters:

image - the image

Returns:

the filtered image

Throws:

FilterException - if an error occurs during filtering