LibTiff Mailing List
TIFF and LibTiff Mailing List Archive
October 2000
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
2000.10.14 23:31 "Re: tif_getimage.c and YCbCr", by Tom Lane
Frank Warmerdam <warmerda@home.com> writes:
> o Is there anything in the specification that requires factorable sizes when
> using YCbCr images?
Yes, see the description of file YCbCrSubsampling (p. 92 in my copy of
TIFF 6.0).
This restriction is pretty bogus in connection with JPEG-compressed
images, since an odd-sized original might be converted to YCbCr as
part of compression. But it's reasonable for images that are natively
YCbCr.
regards, tom lane