NOTES
-----
VisibleHuman_IMGF
=================
The VisibleHuman_IMGF loader will load the Visual Human Project MRI and
CT (radiological/) IMGF format image files. These images are converted
from 16-bit greyscale to 8-bit greyscale.

By default the loader will perform a pre-process scan of the image data
to determine the optimal scaling value for conversion to 8-bit
greyscale:

    scale = (max value >> 8) + 1
    value = value \ scale

On an individual image basis, this gives the best result.  However, if
you intend to combine images in some manner or you want to speed up the
loading process, you may want to force a particular scaling value as
follows:

The loader will look for the environment variable
"ENV:ImageFX/VisibleHuman_IMGF" to determine it's scaling value. If the
variable is set to 0 or is not found, the pre-process scan will be
performed as default.  If the value is 1 or greater, that value will be
used for scaling:

    scale = env value
    value = value \ scale

If the env value is set to 1, the image data will be loaded as is (a
number divided by 1 is itself). Generally, for MRI images scale = 4 and
CT images scale = 12.


VisibleHuman_RAW
================
The VisibleHuman_RAW loader will load the 24-bit (Fullcolor/) RAW image
files.  The images are loaded as 24-bit (RGB) without any level scaling
required.

Because there is no header information contained within these RAW image
files, the LM_CheckFile() function will auto-recognize the format by
checking that the file size is 7471104 bytes.

Currently, no check is made by the LM_Load() function to insure that a
file is the proper format... so be careful when using SHIFT-LOAD (Load
image as).




WWW
---
The latest version can be downloaded from the ImageFX support area on
the young monkey studios website at:

  http://www.youngmonkey.ca/hands/files/ImageFX/index.html

or The Visible Human Project support area at:

  http://www.youngmonkey.ca/hands/files/VisibleHuman/index.html


The Visible Human Project: The Data and How to Get It:

  http://www.nlm.nih.gov/research/visible/getting_data.html




LEGALITIES
----------
This loader is copyright 1998 by dhomas trenn and young monkey.  It may
be freely distributed.


TRADEMARKS
----------
Visible Human Project is a trademark of National Library of Medicine.
ImageFX is a trademark (?) of Nova Design, Inc.


THANKS
------
Thanks to Keith Barkley for his assistance.

 PERMSSN    UID  GID    PACKED    SIZE  RATIO     CRC       STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                 1198    2545  47.1% -lh5- e0d2 May  6  1999 Modules/Loaders/VisibleHuman.readme
[generic]                 1511    2592  58.3% -lh5- b58f Dec 23  1998 Modules/Loaders/VisibleHuman_IMGF
[generic]                 4217    6536  64.5% -lh5- 7775 Dec 23  1998 Modules/Loaders/VisibleHuman_RAW
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         3 files    6926   11673  59.3%            May  9  1999