[Image-SIG] Can not read a special type of tif images

[Nadav Horesh]

I have a set of tif images that generated for a dicom images using ImageMagic convert utility. The Image module does not identify them (even identify utility seems to be inconsistent about them, as shown below):

  Try to read image via Image module
 ===================================

In [2]: import Image

In [3]: Image.VERSION
Out[3]: '1.1.6'

In [6]: im = Image.open('disk1_00_00_00_ct000104.tif')
---------------------------------------------------------------------------
IOError                                   Traceback (most recent call last)

/home/nadav/Dubi_feb_2008/<ipython console> in <module>()

/usr/lib64/python2.5/site-packages/PIL/Image.py in open(fp, mode)
   1914             pass
   1915 
-> 1916     raise IOError("cannot identify image file")
   1917 
   1918 #
Ioerror: cannot identify image file




   Use identify to tell the imsge type (claims 16 bits image)
  ===========================================================


nadav at nadav_home ~/Dubi_feb_2008 $ identify disk1_00_00_00_ct000104.tif
disk1_00_00_00_ct000104.tif TIFF 512x666 512x666+0+0 DirectClass 16-bit 1.95405mb 



   Use VERBOSE identify to tell the imsge type (claims 3 channels of 8 bits image)
  =================================================================================

nadav at nadav_home ~/Dubi_feb_2008 $ identify -verbose disk1_00_00_00_ct000104.tifImage: disk1_00_00_00_ct000104.tif
  Format: TIFF (Tagged Image File Format)
  Class: DirectClass
  Geometry: 512x666+0+0
  Type: TrueColor
  Endianess: MSB
  Colorspace: RGB
  Depth: 8-bit
  Channel depth:
    Red: 8-bit
    Green: 8-bit
    Blue: 8-bit
  Channel statistics:
    Red:
      Min: 0 (0)
      Max: 255 (1)
      Mean: 23.9858 (0.094062)
      Standard deviation: 54.0234 (0.211857)
    Green:
      Min: 0 (0)
      Max: 255 (1)
      Mean: 23.9649 (0.0939799)
      Standard deviation: 53.9348 (0.211509)
    Blue:
      Min: 0 (0)
      Max: 255 (1)
      Mean: 23.9279 (0.0938347)
      Standard deviation: 53.9765 (0.211673)
  Rendering intent: Undefined
  Resolution: 72x72
  Units: Undefined
  Filesize: 1.95405mb
  Interlace: None
  Background color: white
  Border color: rgb(223,223,223)
  Matte color: grey74
  Transparent color: black
  Page geometry: 512x666+0+0
  Dispose: Undefined
  Iterations: 0
  Compression: None
  Orientation: TopLeft
  Signature: 0b119af1944ffba9285d903f89bc4021e52686570b8bc519f3e653a0dfd05445
  Tiff:document: /home/nadav/Dubi_feb_2008/disk1_00_00_00_ct000104.tif
  Tiff:rows-per-strip: 2
  Tiff:software: ImageMagick 6.3.5 11/04/07 Q16 http://www.imagemagick.org
  Tainted: False
  Version: ImageMagick 6.3.5 11/04/07 Q16 http://www.imagemagick.org



   Nadav.