org.autoplot.imagedatasource

Class ImageDataSource

java.lang.Object

org.autoplot.datasource.AbstractDataSource

org.autoplot.imagedatasource.ImageDataSource

All Implemented Interfaces:

DataSource

public class ImageDataSource
extends AbstractDataSource

Field Summary

Fields

Modifier and Type	Field and Description
static int	CHANNEL_HUE
static int	CHANNEL_SATURATION
static int	CHANNEL_VALUE
static ImageDataSet.ColorOp	GRAYSCALE_OP return the grayscale for each pixel, with values between 0 and 255, using the mapping 0.3 * r + 0.59 * g + 0.11 * b.
static ImageDataSet.ColorOp	HUE_OP return the hue (as in Hue-Saturation-Value) for each pixel, with values between 0 and 360.
static ImageDataSet.ColorOp	SATURATION_OP return the saturation (as in Hue-Saturation-Value) for each pixel, with values between 0 and 100.
static ImageDataSet.ColorOp	VALUE_OP return the value (as in Hue-Saturation-Value) for each pixel, with values between 0 and 100.

Fields inherited from class org.autoplot.datasource.AbstractDataSource

logger, params, resourceURI, uri

Constructor Summary

Constructors

Constructor and Description
ImageDataSource(java.net.URI uri)

Method Summary

Modifier and Type	Method and Description
QDataSet	getDataSet(ProgressMonitor mon) retrieve the dataset.
static java.util.Map<java.lang.String,java.lang.Object>	getJpegExifMetaData(java.io.InputStream in) read useful JPG metadata, such as the Orientation.
java.util.Map<java.lang.String,java.lang.Object>	getJpegExifMetaData(ProgressMonitor mon) read useful JPG metadata, such as the Orientation.
java.util.Map<java.lang.String,java.lang.Object>	getMetadata(ProgressMonitor mon) abstract class version returns an empty tree.
QDataSet	getRange(org.json.JSONObject axis)
static java.awt.image.BufferedImage	rotateImage(java.awt.image.BufferedImage image, double drot, java.awt.image.BufferedImage dest) rotate the image.

Methods inherited from class org.autoplot.datasource.AbstractDataSource

addCability, addCapability, asynchronousLoad, doWhereFilter, getCapability, getExt, getExt, getFile, getFile, getFile, getHtmlFile, getInputStream, getMetadataModel, getParam, getParams, getProperties, getURI, toString

Methods inherited from class java.lang.Object

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

Field Detail

CHANNEL_HUE

public static final int CHANNEL_HUE

See Also:

Constant Field Values

CHANNEL_SATURATION

public static final int CHANNEL_SATURATION

See Also:

Constant Field Values

CHANNEL_VALUE

public static final int CHANNEL_VALUE

See Also:

Constant Field Values

GRAYSCALE_OP

public static final ImageDataSet.ColorOp GRAYSCALE_OP

return the grayscale for each pixel, with values between 0 and 255, using the mapping 0.3 * r + 0.59 * g + 0.11 * b.

HUE_OP

public static final ImageDataSet.ColorOp HUE_OP

return the hue (as in Hue-Saturation-Value) for each pixel, with values between 0 and 360.

SATURATION_OP

public static final ImageDataSet.ColorOp SATURATION_OP

return the saturation (as in Hue-Saturation-Value) for each pixel, with values between 0 and 100.

VALUE_OP

public static final ImageDataSet.ColorOp VALUE_OP

return the value (as in Hue-Saturation-Value) for each pixel, with values between 0 and 100.

Constructor Detail

ImageDataSource

public ImageDataSource(java.net.URI uri)

Method Detail

rotateImage

public static java.awt.image.BufferedImage rotateImage(java.awt.image.BufferedImage image,
                                                       double drot,
                                                       java.awt.image.BufferedImage dest)

rotate the image.

Parameters:

image -

drot - rotate this many degrees clockwise

dest - the target BufferedImage or null if one should be created, the same size as the original, regardless of rotation.

Returns:

the created bufferedImage

getDataSet

public QDataSet getDataSet(ProgressMonitor mon)
                    throws java.lang.Exception

Description copied from interface: DataSource

retrieve the dataset. This allowed to be sub-interactive or batch time scale, and will block until the dataset is produced. This may return null when no data is available, or NoDataInIntervalException can be thrown. If the user cancelled the operation, then java.io.InterrupedIOExcaption or better yet org.das2.CancelledOperationException should be called. These will simply display "cancelled" (or similar) on the status bar.

Specified by:

getDataSet in interface DataSource

Specified by:

getDataSet in class AbstractDataSource

Returns:

the DataSet for the URI, or null if no data is available.

Throws:

java.lang.Exception

getRange

public QDataSet getRange(org.json.JSONObject axis)
                  throws org.json.JSONException,
                         java.text.ParseException

Throws:

org.json.JSONException

java.text.ParseException

getJpegExifMetaData

public java.util.Map<java.lang.String,java.lang.Object> getJpegExifMetaData(ProgressMonitor mon)
                                                                     throws java.lang.Exception

read useful JPG metadata, such as the Orientation. This also looks to see if GPS metadata is available.

Parameters:

mon -

Returns:

Throws:

java.lang.Exception

getJpegExifMetaData

public static java.util.Map<java.lang.String,java.lang.Object> getJpegExifMetaData(java.io.InputStream in)
                                                                            throws java.lang.Exception

read useful JPG metadata, such as the Orientation. This also looks to see if GPS metadata is available.

Parameters:

in - inputStream from a jpeg source.

Returns:

Throws:

java.lang.Exception

getMetadata

public java.util.Map<java.lang.String,java.lang.Object> getMetadata(ProgressMonitor mon)
                                                             throws java.lang.Exception

Description copied from class: AbstractDataSource

abstract class version returns an empty tree. Override this method to provide metadata.

Specified by:

getMetadata in interface DataSource

Overrides:

getMetadata in class AbstractDataSource

Parameters:

mon - progress monitor

Returns:

Throws:

java.lang.Exception