LEAD DICOM Writer User Interface (2.0)

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 Joint Photographic Experts Group- commonly used method of compression for photographic images and JPEG 2000 compressor Also known as an encoder Also known as compressor, this is a module or algorithm to compress data. Playing that data back requires a decompressor, or decoder., this is a module or algorithm to compress data. Playing that data back requires a decompressor Also known as a decoder, this is a module or algorithm to decompress data., or decoder Also known as a decompressor, this is a module or algorithm to decompress data..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 . 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

 
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:
 

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:

 

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 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. 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.

 

See Also

Introduction to the LEAD DICOM Writer

LEAD DICOM Writer (2.0)

ILTDicWrt Interface

IFileSinkFilter Interface

 

This filter is included as part of the following modules:

LEADTOOLS Medical Multimedia Module