McIDAS Programmer's Manual

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*.ET

Enhancement save files, where * is a user-defined file name.

Enhancement save files are binary files, each containing an 817-word (3268-byte) table. Words 2 through 768 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

Word

Description

0

reserved for system use

1

red color intensity for an image brightness of 0

2

red color intensity for an image brightness of 1

3

red color intensity for an image brightness of 2

...

...

256

red color intensity for an image brightness of 255

257

green color intensity for an image brightness of 0

258

green color intensity for an image brightness of 1

259

green color intensity for an image brightness of 2

...

...

512

green color intensity for an image brightness of 255

513

blue color intensity for an image brightness of 0

514

blue color intensity for an image brightness of 1

515

blue color intensity for an image brightness of 2

...

...

768

blue color intensity for an image brightness of 255

769-816

reserved

API functions

Currently, no API library functions exist for reading or writing enhancement save files.

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