at.mug.iqm.commons.util.image

Class ImageHeaderExtractor

java.lang.Object

at.mug.iqm.commons.util.image.ImageHeaderExtractor

public class ImageHeaderExtractor
extends Object

This class extracts the headers of images.

Changes

• 2010 05 registering tiff or jpeg2000 readers if readers are not available through native imagio

Since:

2009

Author:

Helmut Ahammer, Philipp Kainz

Field Summary

Fields

Modifier and Type	Field and Description
private StringBuffer	imageHeader
private static org.apache.log4j.Logger	logger
private javax.media.jai.PlanarImage	pi

Constructor Summary

Constructors

Constructor and Description
ImageHeaderExtractor() This is the constructor.

Method Summary

Modifier and Type	Method and Description
private void	constructMetadata(Node root) Construct the meta data (caller for the recursive method).
private void	constructMetadata(Node node, int level) Recursively constructs the meta data for a specific node and level.
private void	extractHeader(javax.media.jai.PlanarImage pi) Extract an image's header (2)
String	getHeaderOfImage(File file) This returns the header of the current image.
String	getImageHeader(javax.media.jai.PlanarImage pi) This returns the header of the current image.
private void	indent(int level) Add an indent to the level.
private void	readMetadata(File file) Reads the file, then meta data is generated from the header.

Methods inherited from class java.lang.Object

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

Field Detail

logger

private static final org.apache.log4j.Logger logger

imageHeader

private StringBuffer imageHeader

pi

private javax.media.jai.PlanarImage pi

Constructor Detail

ImageHeaderExtractor

public ImageHeaderExtractor()

This is the constructor.

Method Detail

getImageHeader

public String getImageHeader(javax.media.jai.PlanarImage pi)

This returns the header of the current image.

Returns:

a String representation of the header to be displayed

getHeaderOfImage

public String getHeaderOfImage(File file)

This returns the header of the current image.

Parameters:

file - - the file to be analyzed

extractHeader

private void extractHeader(javax.media.jai.PlanarImage pi)

Extract an image's header (2)

Parameters:

pi -

readMetadata

private void readMetadata(File file)

Reads the file, then meta data is generated from the header. (3)

Parameters:

file -

constructMetadata

private void constructMetadata(Node root)

Construct the meta data (caller for the recursive method).

Parameters:

root -

constructMetadata

private void constructMetadata(Node node,
                               int level)

Recursively constructs the meta data for a specific node and level.

Parameters:

node -

level -

indent

private void indent(int level)

Add an indent to the level.

Parameters:

level -