JEDMICS C4

From Just Solve the File Format Problem
(Difference between revisions)
Jump to: navigation, search
Line 5: Line 5:
 
}}
 
}}
 
== Overview ==
 
== Overview ==
'''JEDMICS C4''' is a raster image file format. It is also known as '''[[CALS raster]] Type 4'''.
+
'''JEDMICS C4''' is a bi-level raster image file format. It is also known as '''EDMICS C4''' or '''CALS Raster Type 4'''.
  
 
The name comes from an entity named JEDMICS (Joint Engineering Data Management Information and Control System), which is related in some way to the U.S. Department of Defense.
 
The name comes from an entity named JEDMICS (Joint Engineering Data Management Information and Control System), which is related in some way to the U.S. Department of Defense.
 +
 +
== Format ==
 +
Files have a 128-byte header, followed by a tile index, followed by the pixel data in the form of a set of 512×512-pixel tiles. Each tile is compressed with [[CCITT Group 4]], or is uncompressed.
 +
 +
== Identification ==
 +
The specification implies that files begin with (hex) bytes <code>80 00 00 00</code>.
 +
 +
== See also ==
 +
* [[CALS raster]]
  
 
== Specifications ==
 
== Specifications ==

Revision as of 14:24, 11 April 2013

File Format
Name JEDMICS C4
Ontology
Extension(s) .c4 .ct4

Contents

Overview

JEDMICS C4 is a bi-level raster image file format. It is also known as EDMICS C4 or CALS Raster Type 4.

The name comes from an entity named JEDMICS (Joint Engineering Data Management Information and Control System), which is related in some way to the U.S. Department of Defense.

Format

Files have a 128-byte header, followed by a tile index, followed by the pixel data in the form of a set of 512×512-pixel tiles. Each tile is compressed with CCITT Group 4, or is uncompressed.

Identification

The specification implies that files begin with (hex) bytes 80 00 00 00.

See also

Specifications

Software

Personal tools
Namespaces

Variants
Actions
Navigation
Toolbox