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February 2008

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2008.02.11 07:43 "TIFFReadRGBAImage rendering upside-down", by Mick O'Neill
2008.02.11 16:03 "Re: TIFFReadRGBAImage rendering upside-down", by Frank Warmerdam
2008.02.12 00:29 "Re: TIFFReadRGBAImage rendering upside-down", by Mick O'Neill
2008.02.12 01:27 "Re: TIFFReadRGBAImage rendering upside-down", by Mick O'Neill

2008.02.11 07:43 "TIFFReadRGBAImage rendering upside-down", by Mick O'Neill

Hi,

I have some odd TIFF files here (that do have a subsampling error being
reported for the OJPEG compressed images) that, when I call the
TIFFReadRGBAImage function, renders the RGBA upside down (flipped, not
rotated). I was wondering if there was something in the TIFF headers
that tell me this is happening? Or perhaps some other info elsewhere.
There are some applications around that read these TIFFs correctly, and
others that will not read them at all.

libtiff version 3.9.0 Beta
 
Any ideas appreciated.
 
 
Sample file can be downloaded from http://midimick.com/Test1.tif


Cheers
 
Mick O'Neill 
Software Engineer