com.pixelmed.dicom

Class CompressedFrameEncoder

java.lang.Object

com.pixelmed.dicom.CompressedFrameEncoder

public class CompressedFrameEncoder
extends java.lang.Object

The CompressedFrameEncoder class implements compression of specified frames in various supported Transfer Syntaxes, which can then be incorporated in DICOM encapsulated images.

Constructor Summary

Constructors

Constructor and Description
CompressedFrameEncoder()

Method Summary

Modifier and Type	Method and Description
static java.lang.String	chooseOutputFormatForTransferSyntax(java.lang.String transferSyntaxUID) Determine the output format string used by the JIIO codecs for the DICOM Transfer Syntax.
static java.lang.String	chooseTransferSyntaxForOutputFormat(java.lang.String outputFormat) Determine the DICOM Transfer Syntax for the output format string used by the JIIO codecs.
static java.io.File	getCompressedFrameAsFile(AttributeList list, java.awt.image.BufferedImage renderedImage, java.lang.String outputFormat, java.io.File tmpFrameFile) Compress the supplied frame.

Methods inherited from class java.lang.Object

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

Constructor Detail

CompressedFrameEncoder

public CompressedFrameEncoder()

Method Detail

chooseOutputFormatForTransferSyntax

public static java.lang.String chooseOutputFormatForTransferSyntax(java.lang.String transferSyntaxUID)

Determine the output format string used by the JIIO codecs for the DICOM Transfer Syntax.

Though not supported by the JIIO codecs, an output format string of "rle" is also recognized.

Parameters:

transferSyntaxUID - the DICOM Transfer Syntax UID

Returns:

the format string (lower case) or null if unrecognized

chooseTransferSyntaxForOutputFormat

public static java.lang.String chooseTransferSyntaxForOutputFormat(java.lang.String outputFormat)

Determine the DICOM Transfer Syntax for the output format string used by the JIIO codecs.

Though not supported by the JIIO codecs, an output format string of "rle" is also recognized.

Parameters:

outputFormat - the format string (lower case)

Returns:

the DICOM Transfer Syntax UID or null if unrecognized

getCompressedFrameAsFile

public static java.io.File getCompressedFrameAsFile(AttributeList list,
                                                    java.awt.image.BufferedImage renderedImage,
                                                    java.lang.String outputFormat,
                                                    java.io.File tmpFrameFile)
                                             throws java.io.IOException,
                                                    java.io.FileNotFoundException,
                                                    DicomException

Compress the supplied frame.

Parameters:

list - the AttributeList from which the frame was extracted

renderedImage - the frame as an image

outputFormat - the compression format to use [jpeg2000|jpeg-lossless|jpeg-ls|rle]

tmpFrameFile - the file to write the compressed bit stream to

Returns:

the file written to, or null if compression failed

Throws:

java.io.IOException - if there is an error writing the file

java.io.FileNotFoundException - if the supplied file path cannot be found

DicomException - if the image cannot be compressed