Short: Visible Human Project loaders for ImageFX Author: dhomas@youngmonkey.ca Uploader: dhomas youngmonkey ca Type: gfx/ifx Architecture: m68k-amigaos 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.