LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
July 2002
Previous Thread
Next Thread
Previous by Thread
Next by Thread
Previous by Date
Next by Date
Contact
The TIFF Mailing List Homepage
This list is run by Frank Warmerdam
Archive maintained by AWare Systems
Thread
2002.07.10 20:11 "Re: YCCK photometric?", by Chris Cox
At 2:34 PM -0400 7/10/02, Dwight Kelly wrote: > I know it's possible to compress a RGB image using JPEG compression and > YCrCb colorspace using COMPRESSION_JPEG & PHOTOMETRIC_YCBCR. > > Is it possible to compress a CMYK image in a TIFF using JPEG compression > and YCCK colorspace? No. > The recently published Adobe Photoshop TIFF Technote indicates that the > photometric must matched the jpeg compressed data so YCCK can't be used. That is correct - YCCK is not valid in TIFF. And the technote for JPEG in TIFF that covers that restriction is quite old... Chris