Joint Photographic Experts Group- commonly used method of compression for photographic images

Also known as an encoder , this is a module or algorithm to compress data. Playing that data back requires a decompressor , or decoder .encoder , this is a module or algorithm to compress data. Playing that data back requires a decompressor , or decoder .encoder , this is a module or algorithm to compress data. Playing that data back requires a decompressor , or decoder .encoder , this is a module or algorithm to compress data. Playing that data back requires a decompressor , or decoder .encoder , this is a module or algorithm to compress data. Playing that data back requires a decompressor , or decoder .

Also known as compressor, this is a module or algorithm to compress data. Playing that data back requires a decompressor, or decoder.

Also known as a decoder, this is a module or algorithm to decompress data.

Also known as a decompressor, this is a module or algorithm to decompress data.

The portion of the file holding the audio data. The audio data might be compressed to save disk space. The data has to be decompressed using an audio decompressor before you can play (hear) it.

LEAD DICOM Writer User Interface (2.0)DICOM Writer User Interface

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The DICOM Writer filter makes it possible to set the pixel data of an existing or new DICOM file. The DICOM Writer accepts 8-bit RGB, 24-bit RGB, 16-bit UYVY, 16-bit YUY2 uncompressed data or MPEG-2 (SD or HD) compressed data. The filter has a built-in JPEG and JPEG 2000 compressor so it can create JPEG and/or JPEG 2000-compressed DICOM files. It can also create MPEG2 (SD or HD) DICOM files but it needs an external MPEG2 encoder. The DICOM Writer property page has two tabs to control the output. The LEAD DICOM File Writer tab is shown in the following figure:

LEAD DICOM File Writer Tab

The following fields are on this tab:

Control	Description
Input template file name Edit box:	Contains the input template file name. This edit box is disabled during streaming.
Browse Button	Click this button to open the Open Dialog to browse to the location of the input file. This button is disabled during streaming.
DICOM Class Drop-down list box	Select an item from this list to construct certain DICOM files based on standard DICOM classes without choosing an input template file. If an input template file is selected then this list will be disabled. This drop-down list box is disabled during streaming. Possible values depend on whether the input stream is MPEG2, as follows:
	When the Input Stream is MPEG2	When the Input Stream is not MPEG2
	Secondary Capture Multi-frame True Color Image Storage	Nuclear Medicine Image Storage
	Video Endoscopic Image Storage	Ultrasound Multi-frame Image Storage
	Video Photographic Image Storage	X-Ray Angiographic Image Storage
	Video Microscopic Image Storage	X-Ray Radiofluoroscopic Image Storage
		Secondary Capture Multi-frame Grayscale Byte Image Storage
		Secondary Capture Multi-frame Grayscale Word Image Storage
		Secondary Capture Multi-frame True Color Image Storage
		Default (Secondary Capture Image Storage)

DICOM Compression Tab

The following tab appears when the input data is not MPEG2 data:

DICOM Compression Tab

The following fields are on this tab:

Control	Description
Enable Check box	Select this check box to enable compression.
Flip YUV data Check box	Select this check box to flip the YUV data. This check box is ignored if the input data is not in the YUV color space.
Format drop-down list box:	Sets which compression type is to be used for the pixel data in the DICOM file. Possible values are:
	Uncompressed
	Lossless JPEG
	Lossy JPEG
	JPEG 2000
	Lossless JPEG 2000
Quality factor Slider bar	Sets the quality factor. Values range from 2 (Best) to 255 (Worst). The exact value is displayed in the Quality factor edit box.
Quality factor Edit box	Displays the Quality factor. Type in a value, or use the slider bar.

LEAD MPEG2 Compression property page

The following page appears when the input data is MPEG2:

LEAD MPEG2 Compression property page

The following fields are on this tab:

Control	Description
MPEG-2 Stream DICOM compatibility Drop-down list box:
	Value	Meaning
	Force	Force MPEG2 encoder settings to be compatible with the MPEG2 DICOM standard. Returns an error code if the audio stream is not compatible with the DICOM standard. Accepts only MPEG1 audio with the following frequencies: 32KHz, 44.1KHz, 48KHz.
	Ignore	Do not change the MPEG2 encoder settings if they are not compatible with the MPEG2 DICOM standard. Tolerates audio compression settings that are not compatible with the MPEG2 standard (accepts MPEG audio with the following frequencies: 16KHz, 22.05KHz, 24KHz, 32KHz, 44.1KHz, 48KHz).
	Stop Graph	Stop the graph if the MPEG2 encoder settings are not compatible with the MPEG2 DICOM standard. Returns an error code if the audio stream is not compatible with the DICOM standard. Accepts only MPEG1 audio with the following frequencies: 32KHz, 44.1KHz, 48KHz.

This filter is included as part of the following modules:

LEADTOOLS Medical Multimedia Module