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April 2012

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2012.04.24 16:26 "YCbCr/JPEG issue in 4.0.1", by John Evans
2012.04.24 16:44 "Re: YCbCr/JPEG issue in 4.0.1", by Frank Warmerdam
2012.04.24 19:03 "Re: YCbCr/JPEG issue in 4.0.1", by John Evans
2012.04.24 19:19 "Re: YCbCr/JPEG issue in 4.0.1", by Even Rouault
2012.04.27 15:35 "Re: YCbCr/JPEG issue in 4.0.1", by Charles Auer
2012.04.27 17:07 "Re: YCbCr/JPEG issue in 4.0.1", by Joris Van Damme
2012.04.27 18:57 "Re: YCbCr/JPEG issue in 4.0.1", by John Evans
2012.04.28 01:58 "Re: YCbCr/JPEG issue in 4.0.1", by Charles Auer
2012.05.02 09:51 "Re: YCbCr/JPEG issue in 4.0.1", by Charles Auer
2012.05.03 21:58 "Re: YCbCr/JPEG issue in 4.0.1", by Joris Van Damme
2012.04.28 09:28 "Re: YCbCr/JPEG issue in 4.0.1", by Joris Van Damme
2012.04.28 09:46 "Re: YCbCr/JPEG issue in 4.0.1", by Joris Van Damme
2012.04.28 15:10 "Re: YCbCr/JPEG issue in 4.0.1", by Charles Auer
2012.04.28 16:26 "Re: =?windows-1256?q?YCbCr/JPEG_issue_in_4=2E0=2E1=FE?=", by Charles Auer
2012.05.01 12:52 "Re: YCbCr/JPEG issue in 4.0.1", by Joris Van Damme

2012.05.02 09:51 "Re: YCbCr/JPEG issue in 4.0.1", by Charles Auer

 > Date: Fri, 27 Apr 2012 19:07:29 +0200
> Subject: Re: [Tiff] YCbCr/JPEG issue in 4.0.1
> In this case, LibTiff in particular
> auto-corrects the tag value so as to correctly reflect the JPEG
> marker, which does seem to be a good way to both read all legit files
> as well as a lot of files that are incorrect in this specific manner.
 Joris: How can I find out at run-time if YCbCr Subsampling tag values have
 been auto-corrected? If I elect to do my own re-sampling and color
 conversion, then I need this information right after the first call to
 TIFFReadEncodedStrip or TIFFReadEncodedTile. One reason one might elect to
 do his own resampling and color conversion would be to read JPEG compressed
 images with planar configuration = 2, and there are a few of these images
 out there. Charles