(Earlier posted on forum)

See subject - I've posted this on stackoverflow
http://stackoverflow.com/questions/25719495/magickwand-conversion-to-tiffccitt-group-4-compression-gives-uncompressed-image

Link to example program + demo image is included in that question.

Hope some of you guys can help solve this for me - and earn a StackOverflow bounty in the process (if that helps ;) )

Thanks,
Reinier

Hello,

For some reason the bindings in Pascal, and/or the wand bindings (maybe internally to imagemagick) are broken.

Use this enumeration to get the expected result in the TIFF module:

-----------------
UndefinedCompression,
NoCompression,
BZipCompression,
DXT1Compression,
DXT3Compression,
DXT5Compression,
FaxCompression,
Group4Compression,
JPEGCompression,
JPEG2000Compression, /* ISO/IEC std 15444-1 */ LosslessJPEGCompression,
LZWCompression,
RLECompression,
ZipCompression,
ZipSCompression,
PizCompression,
Pxr24Compression,
B44Compression,
B44ACompression,
LZMACompression, /* Lempel-Ziv-Markov chain algorithm */ JBIG1Compression, /* ISO/IEC std 11544 / ITU-T rec T.82 */ JBIG2Compression /* ISO/IEC std 14492 / ITU-T rec T.88 */ ------------------

So in your code use:

     status := MagickSetImageCompression(wand,CompressionType(7));
     if (status = MagickFalse) then HandleError;

I had downloaded the imagemagick sources in order to reach this fact.

José Mejuto wrote

El 13/09/2014 17:34, Reinier Olislagers escribió: For some reason the bindings in Pascal, and/or the wand bindings (maybe internally to imagemagick) are broken.

Mmmm, if the wand bindings were broken that would surely have lead to many more people complaining and it getting fixed?

Use this enumeration to get the expected result in the TIFF module:

Great, thanks a LOT - that does solve the problem!

Mantis issue
http://mantis.freepascal.org/view.php?id=26723

Reinier Olislagers wrote

Mantis issue http://mantis.freepascal.org/view.php?id=26723

Test case and patch attached to bugtracker issue.

Thanks,
Reinier