Help Version 19.0.2017.10.27
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The LEAD DICOM Writer includes DirectShow® filters that are used for creating DICOM objects with compressed video and audio data.
Key Features:
Ability to create DICOM files with both video and audio using MPEG-2 compression (SD or HD). The user can adjust various attributes of the MPEG-2 stream, including bit rate and quality factor.
Ability to create DICOM files with both video and audio using AVC/H.264 compression (SD, HD or BD-compatible). The user can adjust various attributes of the stream, including bit rate and quality factor.
Ability to create DICOM files with video data (cine images) using lossy and lossless JPEG and JPEG2000 compression, with the option to adjust quality factor.
Ability to add video data to either an existing DICOM file or create a new one from a set of predefined DICOM classes or IODs.
Ability to accept 8-bit RGB, 12-bit grayscale (LGRY), 16-bit grayscale (LGRY), 16-bit UYVY, 16-bit YUY2, 24-bit RGB data or MPEG-2 compressed data.
Includes a number of video processing filters, including:
Auto Contrast
Auto Intensity
Auto Level
Video Text Overlay
Video Crop
Ability to be used with an existing application that uses DirectShow®, or programmatically from within the LEADTOOLS Medical Imaging toolkit.
Examples of DICOM objects that can be created using the LEAD DICOM Writer component:
Secondary Capture Multi-Frame True Color Image Storage
Video Endoscopic Image Storage
Video Photographic Image Storage
Video Microscopic Image Storage
Ultrasound Multi-frame Image Storage
X-Ray Radiofluoroscopic Image
X-Ray Angiographic Image Storage
Secondary Capture Multi-frame Grayscale Byte Image Storage
Secondary Capture Multi-frame Grayscale Word Image Storage
MPEG-2 Encoding in DICOM:
MPEG-2 is a high quality video compression, primarily targeted for applications that require higher bitrates or high bandwidth usage. The DICOM standard uses MPEG-2 lossy compression with middle range quality, which typically delivers between 30 Mbytes and 60 Mbytes per minute of video (SD) or 112 Mbytes and 300 Mbytes per minute of video (HD).
The DICOM MPEG-2 objects created using the writer fully adhere to the rules of MPEG-2 encoding in DICOM, which are described by the new transfer syntaxes:
"MPEG-2 Main Profile @ Main Level (1.2.840.10008.1.2.4.100) for SD MPEG-2 Compression. See "Supplement 42: MPEG2 Transfer Syntax" of the DICOM standard for more information
"MPEG-2 Main Profile @ High Level" (1.2.840.10008.1.2.4.101) for HD MPEG-2 Compression. See "Supplement 137: MPEG2 MP@HL Transfer Syntax" of the DICOM standard for more information.
Some of the typical modalities that can take advantage of MPEG-2 encoding in DICOM include microscopic and endoscopic applications such as Gastro-Enterology, Laparoscopy, Orthopedics, Ophthalmology, ENT, Gynaecology, Bronchoscopy, Pathology, and (Microscopic) Surgery.
H.264/AVC Encoding in DICOM:
Note: encoding High profile video can be performed if Intel Quick Sync software encoding is used (computers without CUDA or Quick Sync hardware acceleration can do that if the Intel Quick Sync Dll is redistributed). For more information on High Profile encoding, refer to How to Enable High Profiles and Hardware Compression in the LEAD H.264 Encoder.
DirectShow filters included as part of the LEAD DICOM Writer component:
LEAD MPEG-2 Transport Multiplexer