MIL-HDBK-9660 Dod Produced Cd-Rom ProductsThis document was prepared by the Defense information Systems Agency DISA, in cooperation with the services and other activities within the Department of Defense DOD. The goal of this document is to provide information and guidelines to support the creation and interoperability of Compact Disc-Read Only Memory CD-ROM development and use within DOD. This document specifies core compact disc fundamentals for the DOD community. It is strongly recommended all DOD components comply with the fundamentals established within this document. Specialized functions within DOD may require expanded internal guidance to meet their own mission needs. All other Government entities are invited to use this document.

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e. Digital Representation for Communication of Illustration Data: CGM (Computer Graphics Metafile) Applications Profile (MIL-PRF-28003A for CALS), is the standard for exchange of 2-D data in vector file format for documents not prepared in CAD/CAM.

IGES, CGM, TIFF, and PCX are file formats for graphics files that systems with imaging interfaces can generally read and print. TIFF files are popular, but file header schemes vary and the result can be a specific type of TIFF file.

Some of the major wordprocessing, desktop publishing, and document retrieval software companies have announced support for SGML, but it has not yet become a fully implemented industry text and document markup standard.

HTML is a markup language used to create hypertext documents for the World-Wide Web (WWW). RTF is another markup language gaining popularity, especially in the Microsoft Windows

programming/document processing environment.

Adobe's Portable Document Format (PDF) is beginning to gather support in the commercial sector, but is currently oriented towards document format/layout vice structure/content.

Regardless of the format you choose, it is important to be consistent. Consistency will significantly reduce manual effort required to implement future system enhancements/data conversions.

5.2.6.1 Compression/Decompression. Scanned (bitmapped/raster) images, motion video, animation, and sound generally must be compressed to reduce the amount of required disc storage space. Several compression/decompression algorithms and schemes are available enabling producers to maximize the amount of information provided on their discs. Compressed files are also smaller to transfer, which improves computer performance.

By using standard compression/decompression schemes instead of proprietary, information can be more easily transferred/converted to other applications/formats.

The following are established standards used by the DOD for CALS (Continuous Acquisition and Life

Cycle Support) and Automated Document Conversion (ADC):

a. ITU (formerly CCITT) Recommendation T.6:1988, Facsimile Coding Schemes and Coding Control Functions for Group 4 Facsimile Apparatus (Group 4) - used to encode/decode (compress/decompress) binary raster graphics (black and white bitmapped images) as defined in FIPS PUB 150 - Telecommunications: Facsimile Coding Schemes and Coding Control Functions for Group 4

Facsimile Apparatus.

b. JPEG (Joint Photographic Experts Group). ISO 10918-1:1994, Digital compression and coding of continuous-tone still images: Requirements and guidelines. Used for encoding/decoding (compressing/decompressing) of still-frame, continuous-tone, gray scale images that are eight or more bits per pixel, and color images that are sixteen or more bits per pixel. JPEG consists of a family of "lossy" image compression processes; i.e., some data is lost during the processing. A JPEG toolkit allows the user to choose how much loss an application can tolerate. JPEG also provides an extension for true "lossless" compression.