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March 2000

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2000.03.30 10:53 "Complex Floating Point", by Antonio E Scuri
2000.03.30 13:33 "Re: Complex Floating Point", by Frank Warmerdam
2000.03.30 13:56 "Re: Complex Floating Point", by Antonio E Scuri
2000.03.30 15:07 "Re: Complex Floating Point", by Chris Hanson
2000.03.30 16:44 "Re: Complex Floating Point", by Antonio E Scuri
2000.03.30 19:12 "Re: Complex Floating Point", by Cris Luengo
2000.03.31 11:34 "Re: Complex Floating Point", by Antonio E Scuri
2000.03.31 15:14 "Re: Complex Floating Point", by Max Martinez
2000.03.31 17:05 "Re: Complex Floating Point", by Antonio E Scuri
2000.03.31 18:07 "Re: Complex Floating Point", by Max Martinez
2000.03.31 18:12 "Re: Complex Floating Point", by Antonio E Scuri
2000.03.31 18:31 "Fwd: RE: Complex Floating Point", by Antonio E Scuri
2000.04.03 13:12 "Re: Complex Floating Point", by Frank Warmerdam
2000.03.31 18:48 "Re: Complex Floating Point", by Daniel Mccoy
2000.03.31 11:36 "Complex Floating Point", by Antonio E Scuri

2000.03.31 11:36 "Complex Floating Point", by Antonio E Scuri

   If TIFF has support for Floating Point, it should give also support for 
complex numbers. Since most floating point usage are for scientific 
applications, and many scientific applications do need complex number, most 
of them result of Fourier Transforms.

   Up to 6.0 TIFF spec does not consider complex number. I do not know the 
TIFF 7.0 spec, but if it considers complex numbers we could adopt it today.

   There were no comments about the TIFF 7 spec on this, but there were 
many other interesting suggestions.

   In fact we can use the SamplesPerPixel Tag, which is less compatible. Or 
we can use 2 IFDs, one for the real part and one for the imaginary part, 
this is more compatible but the data is disassociated.  Or I can always 
provide both solutions as an option to the user.

Thanks,
scuri