2007.04.05 16:07 "[Tiff] Floating point RGBA", by mark meijer

I have a file I want to read.

I have tried opening using devIL, which uses libTiff but returns IL_LIB_TIFF_ERROR.

It opens fine in Photoshop but it seems floating point isn't fully supported in libTiff?

thanks for any insight,

Some info on the file..

C:\temp\tiff-3.8.2-1-bin\bin>tiffinfo ConvenienceStoreFloor_1a_shape.tif

TIFF Directory at offset 0xa (10)
    Subfile Type: (0 = 0x0)
    Image Width: 256 Image Length: 256
    Resolution: 72, 72
    Bits/Sample: 32

  Sample Format: IEEE floating point
  Compression Scheme: PackBits
  Photometric Interpretation: RGB color
  Extra Samples: 1<assoc-alpha>
  Samples/Pixel: 4
  Rows/Strip: 256
  Planar Configuration: single image plane

SubFileType (1 Long): Zero ImageWidth (1 Long): 256 ImageLength (1 Long): 256 BitsPerSample (4 Short): 32, 32, 32, 32 Compression (1 Short): PackBits (aka Macintosh RLE) Photometric (1 Short): RGB StripOffsets (1 Long): 252 SamplesPerPixel (1 Short): 4 RowsPerStrip (1 Long): 256 StripByteCounts (1 Long): 700221 XResolution (1 Rational): 72 YResolution (1 Rational): 72 PlanarConfig (1 Short): Contig ExtraSamples (1 Short): 1 SampleFormat (4 Short): 3, 3, 3, 3