NEMA PS 2 : 1989
Withdrawn
A Withdrawn Standard is one, which is removed from sale, and its unique number can no longer be used. The Standard can be withdrawn and not replaced, or it can be withdrawn and replaced by a Standard with a different number.
DATA COMPRESSION STANDARD
04-12-1996
12-01-2013
Foreword
Scope
History
Purpose
Rationale
Relation to the ACR/NEMA interface standard
Applicability
Validation
Evolution
Overview
1 Referenced standards and definitions
Referenced standards
Definitions
2 Technical description
Overview
Image conversion techniques
Lossless differential pulse code modulation
Discrete cosine transform
S-transform and pyramid transform
Coding schemes
Huffman coding
Run length encoding
Lempel-Ziv coding
Perimeter encoding
Code combinations
3 Description of data elements
Introduction
Organization of data dictionary
Compression type
Compression code
Labeling
Pointers
Compression sequence
Repeat interval
Blocking
DPCM compression procedures
Discrete cosine transform compression procedures
Data block contents
Coding
S-transform and pyramid transform compression
procedures
Coding
Huffman coding
Shift coding
Escape code
Run length coding
Lempel-Ziv coding
Perimeter coding
Message and group lengths
Compression of overlays
4 Command structure
5 Examples of several types of compression DPCM
Escape code and Huffman table
Repeat interval
Huffman plus shift codes
Different Huffman table and multiple shifts
Implied compression
Huffman and run length encoding
DPCM-Huffman with realistic images
Examples of DCT compressed image data
Example of zonal mapping
Example of adaptive mapping and Huffman coding
Examples of S-transformed data sets
Numerical example
Example for Huffman-coding of a medical image
after S-transformation
Example for Lempel-Ziv encoding
Example of perimeter encoding
6 Abbreviated data dictionary
Appendix
Literature references
Specifies the way in which header data can permit a variety of data compression schemes, either reversible or irreversible, to be fully defined. This Standard is intended to be used in conjunction with ACR/NEMA Standards Publication 300, Digital Imaging and Communications.
| DocumentType |
Standard
|
| PublisherName |
National Electrical Manufacturers Association
|
| Status |
Withdrawn
|
| NEMA 300 : 1988 | DIGITAL IMAGING AND COMMUNICATIONS |
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