Re: File Formats

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3 total messages Started by Guest Account Mon, 28 Dec 1992 23:50

#214

Author: Guest Account
Date: Mon, 28 Dec 1992 23:50

49 lines
2352 bytes

> Do anyone happen to know any computer journals or textbooks which
> talks about different image file formats?
> I am working on a project to display c_scan and p_scan images using
> SGI Explorer.  The images files are already in PV_WAVE (Precision 
> Visuals), MAT_LAB, Analyze (Biomedical Imaging Resource) formats.
> I think thay are raster images and TIFF images.  Are there any ways
> to convert these images files to RGB format? (existing tools or any
> programming)


There is also a module on the ftp site which can import various
foreign images formats. Quoted from the documentation of
ImportImage :

       "Currently ImportImage knows about the following formats....

          Format    Description
          -------   ----------------------------------------------
          gif       CompuServe Graphics Image Format File
          hdf       Hierarchical Data Format File
          icon      Sun Icon and Cursor file
          iff       Sun TAAC Image File Format
          mpnt      Apple Macintosh MacPaint file
          pbm       Portable Bit Map file
          pcx       ZSoft IBM PC Paintbrush file
          pgm       Portable Grayscale Map file
          pic       PIXAR PICture file
          pict      Apple Macintosh QuickDraw/PICT file
          pix       Alias PIXel image file
          pnm       Portable aNy Map file
          ppm       Portable Pixel Map file
          ras       Sun RASterfile
          rgb       Silicon Graphics RGB image file
          rla       Wavefront raster image file
          rle       Utah Runlength-encoded image file
          rpbm      Raw Portable Bit Map file
          rpgm      Raw Portable Grayscale Map file
          rpnm      Raw Portable aNy Map file
          rppm      Raw Portable Pixel Map file
          synu      Synu image file
          tiff      Tagged Image File
          x         Stardent AVS X image file
          xbm       X11 Bit Map file
          xwd       X Window Dump image file"


Cheers,
-- Robert van Liere

Re: File Formats

#215

Author: Scott Ferguson
Date: Tue, 29 Dec 1992 14:13

22 lines
1454 bytes

In article <8472@charon.cwi.nl>, guest@cwi.nl (Guest Account) writes:
|> 
|> There is also a module on the ftp site which can import various
|> foreign images formats. Quoted from the documentation of
|> ImportImage :
|> 

I've tried this module with GIF's, AVS .x images, and Sun RAS images.
I've found that it seems to miss the colormap on the pseudocolor image
files like GIF's and RAS's, but obviously it can't miss when the input
file is a 24-bit image. Has anyone else noticed this, or am I using the
module incorrectly? Is there an easy fix? 

I've tried re-making the module since it is provided with source, but it
doesn't come with two needed include files, im.h and sdsc.h

-- 
----------------------------------------------------------------------
Scott Ferguson                        Exxon Research & Engineering Co.
Project Engineer                      New Jersey
----------------------------------------------------------------------
"Always bark at a dog."

Re: File Formats

#216

Author: Jeff Hanson
Date: Tue, 29 Dec 1992 16:38

18 lines
1489 bytes

I have not looked at the module but I can tell that it is based on
imconv from SDSC.  Get the file imtools.v2.1.tar.Z from the 
image/conversion directory of swedishchef.  This will supply you with
the required .h files and lots more useful stuff.

Even if the module works for you, you might want to get the new imtools
distribution and recompile.  Imtools v2.1 supports more image types
and has bug fixes, although they don't seem to match Scott's problems.

-- 
---------------------------------------------------------------------------
 Jeff Hanson - Scientific Graphics Programmer and Workstation Administrator
 Sverdrup Technology, NASA Lewis Research Center Group
 NASA Lewis Research Center, MS 86-4, Cleveland, Ohio 44135
 Telephone - (216) 433-2284  Fax - (216) 433-2182
 tohanson@gonzo.lerc.nasa.gov	-   ViSC: Better Science Through Pictures
 Visualize whirled peas - Bumper sticker seen in Buffalo, NY

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