2002.07.25 09:16 "Re: CCITT Group 4 assistence needed for HylaFAX", by Lee Howard

Well, I was assuming that libtiff is linked in to your application. If all you have are the raw G4 data, you need to fake up some data structures before calling the decode routines in libtiff. At least I assume that would be possible. Then libtiff gives you the image in the form of lines of pixels.

> following this approach, we could convert it to G3, use the existing mechanism to image the tagline, and then convert it back to G4.

I think that this is the method I'd like to attempt first: convert the G4 image data to G3:1D (the image size and resolution is known), let the existing mechanism image the tagline, and then convert the image data back to G4. HylaFAX is liked to libtiff. What are the appropriate TIFF commands which I should know in order to do this conversion?

Thanks.

Lee.