2005.05.02 13:44 "RE: [Tiff] Color TIFF/JPEG compression questions", by Ed Grissom

When an image shows up with blasted out pink and green, I always suspect a confusion over RGB vs. YCbCr.

This image has tags for both:

   Photometric Interpretation: RGB color

  YCbCr Subsampling: 2, 2
  

My guess is that it should be

"Photometric Interpretation: YCbCr"

And things would work a lot better.

TiffTechNote 2 requires that if the underlying JPEG compression uses YCbCr, then the TIFF layer must tell the truth and say it is a YCbCr image and not lie (for compatibility) and say it is RGB.

ed grissom
ed.grissom@intergraph.com