2000.03.31 18:07 "RE: Complex Floating Point", by Martinez, Max
I think people are just getting half this conversation again because I had subscribed to the TIFF list under a different email address.
Anyhow, I think, almost by definition, adding complex to TIFF requires changing the spec. Otherwise there is no specified way to put complex data into a TIFF file, only conventions.
Which image attributes in the current TIFF spec do you see being potentially complex values? Are you talking about private tags?
> -----Original Message-----
> >The second approach would be to put the data all in one
> >sample and signal this with an additional SampleFormat > >value (5 = Complex as a real, imaginary IEEE floating point pair).
> >I don't think it is possible to produce universally understood > >complex without adding to the spec and I am interested
> >in the outcome of this.
> I agree with you. In fact my very first solution was to add a new
> SampleFormat value. It makes many things easier.
> I was just wondering if we can reach another solution
> without changing
> specs. As you can see this is much more "complex"...
> >I don't see yet, however, why you would need an additional
> type (13, 14)
> >as you suggested.
> This is because you can have image attributes (Tags) that
> have complex
> values. So also you will need to add values to the FieldType in the
> IFDEntry definition.
> From: Martinez, Max
> Sent: Friday, March 31, 2000 9:14 AM
> To: 'Antonio E. Scuri'; firstname.lastname@example.org
> Cc: 'email@example.com'