Legacy ImageMagick Discussions Archive

Thank you very much for both valuable hints. After having "pkg-config" installed in my $PATH the problem went away. libpng was found and PNG is now a valid delegate! :) But I also had to set PKG_CONFIG_PATH to /tmp/install/lib/pkgconfig to avoid the use of a local and outdated /opt/X11/lib/libpng15 ...

MacOS X 10.11.2 I cannot build 6.9.2-8 so cannot report "convert -version" My latest 6.8.9-10 build though gives: Version: ImageMagick 6.8.9-10 Q16 x86_64 2015-11-11 http://www.imagemagick.org Copyright: Copyright (C) 1999-2014 ImageMagick Studio LLC Features: DPC OpenCL Delegates: jng jpeg lcms png ...

I compiled from source using ImageMagick-6.9.2-8.tar.gz and libpng-1.6.19.tar.gz roughly like this: mkdir /tmp/install cd libpng-1.6.19 ./configure CFLAGS=-O3 --prefix=/tmp/install --enable-shared --disable-dependency-tracking make check && make install cd ../ImageMagick-6.9.2-8 ./configure LDFLAGS ...

Hi all, I try to compile 6.9.2-8 but can no longer bind the libpng delegate. "./configure --with-png=yes" ends up with the report PNG --with-png=yes no Up to 6.8.9-10 everything works well though. The same compiled libpng is recognized. I tried libpng 1.6.18, 1.6.19 and 1.6.20, just didn't dare to ...

Your tiff input 1 does not have either a path or background transparency. So there is no way to remove the alpha channels and get what you want unless there is a path and there is no path. Correct. We're getting closer to my problem now. I have a bag full of TIFF files and do not like to check with ...

Thanks again for using so much effort on my question. You got me wrong though. The second example is fine for me. It is the first example which bugs me. I want IM to ignore those extra channels of the TIFF file. They shouldn't be considered for transparency. If I save both TIFF files as PSD and use ...

Thanks for checking this. input1 has to alpha channels, true. But it could have only one or even more. That is not my concern. Let me rephrase: I want to use "-alpha remove" for all TIFF images since this is only way I know to get a good preview from a TIFF with transparency and clip path. But if I ...

Hello all, can anyone guide me with a TIFF alpha channel/path question. I need to convert all sorts of TIFFs to a normalized JPEG. Some of those TIFFs have extra alpha channels (sample "logo-alpha.tif", presumably a left over from the designer), some have transparent background and a clipping path ...

The source is Photoshop, not PDF.
http://dl.dropbox.com/u/84530/IM/lab250.psd

Hi Anthony, thanks for taking the time to check my question. I do not see though how you mean the application of profiles in the IM sense. If I do convert lab250.tif -profile sRGB.icc lab250-tif.jpg the colors are ok. If I run convert lab250.psd -profile sRGB.icc lab250-psd.jpg the colors are much ...

Thanks a lot henrywho ! Your command line is a helpful workaround. Do you have another magic spell for converting LAB PSD files? If I use this input http://dl.dropbox.com/u/84530/IM/lab250.psd and this command line convert lab250.psd -colorspace RGB -distort resize 200x200 -alpha off +repage ...

The colorspace parameter hasn't much influence here. The JPEG automatically gets converted into RGB.

Leave out the -resize option and the result is fine.

Regards, Axel.

Hello all, I'm converting a LAB TIFF to RGB JPEG. This looks fine without resizing but shows lots of color artifacts when resizing. Input: http://dl.dropbox.com/u/84530/IM/lab250.tif convert lab250.tif lab250.jpg gives http://dl.dropbox.com/u/84530/IM/lab250.jpg convert lab250.tif -resize 200x200 ...

I found it (from config.log) configure:30677: checking for png.h configure:30677: result: yes configure:30700: checking for LIBPNG15 support configure:30722: gcc -std=gnu99 -std=gnu99 -c -D_THREAD_SAFE -D_THREAD_SAFE -pthread -fopenmp -g -O2 -Wall -D_THREAD_SAFE -pthread -I/opt/local/include -I/opt ...

Hello all, "make test" stops with this message in "validate-formats-in-memory.log-t" ... (194 passing tests) test 195: JNG/Undefined/TrueColor/8-bits... pass. validate: Application built with libpng-1.2.44 but running with 1.5.9 `' @ warning/png.c/MagickPNGWarningHandler/1754. validate ...