McIDAS Programmer's Manual
Version 2003

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FRAMENH.001

Frame enhancement table.

The frame enhancement file is a binary file that contains an 816-word
(3264-byte) table for each frame allocated for the session. To calculate the word position of a particular frame's enhancement table, use the formula below.

position = (frame number * 816) + 1

In each table, the first 768 words contain the red, green and blue color intensities for each of the possible 256 brightness values. The individual intensities have a physical range of 0 to 255, where 0 is the minimum and 255 is the maximum intensity.

Word allocation for each file

Word Description

0 - 815

reserved for system use

816 - 1631

image frame 1 enhancement table

1632 - 2447

image frame 2 enhancement table

2448 - 3263

image frame 3 enhancement table

...

...

Word allocation for each table

Word Description

0

red color intensity for an image brightness of 0

1

red color intensity for an image brightness of 1

2

red color intensity for an image brightness of 2

...

...

255

red color intensity for an image brightness of 255

256

green color intensity for an image brightness of 0

257

green color intensity for an image brightness of 1

258

green color intensity for an image brightness of 2

...

...

511

green color intensity for an image brightness of 255

512

blue color intensity for an image brightness of 0

513

blue color intensity for an image brightness of 1

514

blue color intensity for an image brightness of 2

...

...

767

blue color intensity for an image brightness of 255

768-815

reserved

API functions

Currently, no API library functions exist for reading and writing frame enhancement files.


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