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Re: TIFF file specification

  • To: mathgroup at smc.vnet.net
  • Subject: [mg100287] Re: TIFF file specification
  • From: Jens-Peer Kuska <kuska at informatik.uni-leipzig.de>
  • Date: Sun, 31 May 2009 06:33:36 -0400 (EDT)
  • References: <gvq099$mqc$1@smc.vnet.net>

Hi,

the new command is

ImageData[Import["imagefile", "TIFF"]]


The old version returned an Graphics[Raster[bitmapdata,__],__]
the new version return Image[bitmapdata,___]

Regards
   Jens


beryllium-10 wrote:
> Several years ago I wrote a Mathematica 5.0 program to find and
> extract parts of bitmap tiff images (lines representing the horizon in
> fisheye photos of the sky).  I used to open the bitmap array (i.e. an
> R x C list, where R is the pixel height of the image and C its pixel
> width) with the command:
> 
> Import["imagefile", "TIFF"][[1,1]];
> 
> I recently tried to use my program in Mathematica 7.0 and it seems the
> TIFF format that Mathematica is expecting has changed.  I now have to
> import element [[1]] of the file, not element [[1,1]].  i.e. the new
> command to extract the array is:
> 
> Import["imagefile", "TIFF"][[1]];
> 
> This is not a big problem, but I cannot find when Wolfram changed the
> format that Mathematica expects to see for a TIFF file, and whether
> anything else in the specification changed.  Can anyone point me at
> Mathematica documentation on this change?  I want to be sure that
> nothing else changed (e.g. is Mathematica still reading the array from
> bottom left to top right of the image, etc).
> 
> Thanks in advance for any help on this,
> 
> John Stone
> Earth & Space Sciences, University of Washington; stone(at)geology.
> (washington).(edu)
> 


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