Legacy ImageMagick Discussions Archive

I have compiled IM6.4.0 with libtiff 3.82, ghostscript 8.62 gpl and libpng 1.2.25 on my Intel MacBook
I get some strange behavior with tiff (both screws up colors):
convert Branded_A_Cliped.tif test.jpg
convert Branded_A_Cliped.tif +profile icm -profile "/System/Library/ColorSync/Profiles/Generic CMYK Profile.icc" -profile "/System/Library/ColorSync/Profiles/Generic RGB Profile.icc" BrandClip.jpg

I also get the error: convert: Branded_A_Cliped.tif: unknown field with tag 40961 (0xa001) encountered. `TIFFReadCustomDirectory'.
I looked it up and found out it is the tag for ColorSpace (how can that fail?)

Tag 40961 is not known to the TIFF delegate library so it throws a warning and ignores it. Use -strip install of +profile icm and see if that makes a difference in your resulting image. Also ensure your version of ImageMagick includes support for LCMS (required for color profile support). Check the DELGATES tag from this command:

• identify -list configure

LCMS is there I even get the error when using identify

Right, that error is thrown by the TIFF delegate library announcing that the image has a tag it does not know about and that it is being ignored.

Those TIFFs will get the wrong colors when converted to JPEG or PNG.
Negative-like colors

You should post a URL to your image so we can download and reproduce the problem. We have plenty of CMYK TIFF images which we convert to proper RGB JPEG and PNG images using color profiles with correct results.

Imagemagick 6.3.7 in Linux with libtiff 3.8.2 doesn't report any errors with the tiff file.
I also found the EXIFTAG in a header filer for libtiff (tiff.h) So I guess it is handled somewhere

The tiff file contains an icc color profile: Euroscale Coated v2 How do I handle this file?
Windows Acdsee and gimp doesn't show the original with correct colors.
Mac os x makes black previews for Finder.
Only Photoshop kan correctly show it
The tiff also contains a clipping path if thats a problem

It appears that it would be best to use Photoshop for this particular image workflow.

Photoshop is used as a part of the workflow - but a webbased mediabank has thumbnails and makes images easier to find. They are also related to products texts in the same mediabank. So it will be nice to show correct previews of the images there. Is it possible?
Here is a tiff you can play around with:
http://server.imento.dk/Branded_A_Cliped.tif

Hi everyone,

I run tiff-3.8.2 & ImageMagick-6.4.5.5 on freebsd7-amd64

I have the exact same issue with almost all tif files i manipulate :
unknown field with tag 37724 (0x935c) encountered. `TIFFReadDirectory' @ coders/tiff.c/TIFFWarnings/521.
unknown field with tag 40961 (0xa001) encountered. `TIFFReadCustomDirectory' @ coders/tiff.c/TIFFWarnings/521.
unknown field with tag 37724 (0x935c) encountered. `TIFFReadDirectory' @ coders/tiff.c/TIFFWarnings/521.

The only -dirty- way i found to convert these pics is to convert them to pdf first. than convert this pdf to jpg with -colorspace rgb
Doing this produces an acceptable thumb..
But again, it's dirty.

So any advice is welcomed
FIY, my identify -list configure shows :
Path: /usr/local/lib/ImageMagick-6.4.5/config/configure.xml

----
Name Value
-------------------------------------------------------------------------------
CC cc -std=gnu99
CFLAGS -D_THREAD_SAFE -I/usr/local/include/OpenEXR -fopenmp -O2 -fno-strict-aliasing -pipe -I/usr/local/include/graphviz -Wall -W
CONFIGURE ./configure '--enable-shared' '--without-dps' '--enable-hdri' '--enable-openmp' '--with-perl=/usr/local/bin/perl5.8.8' '--without-threads' '--without-modules' '--with-gslib' '--with-fpx' '--with-freetype' '--with-fontconfig' '--with-wmf=yes' '--with-xml' '--with-rsvg' '--with-x' '--x-libraries=/usr/local/lib' '--x-includes=/usr/local/include' '--prefix=/usr/local' '--mandir=/usr/local/man' '--infodir=/usr/local/info/' '--build=amd64-portbld-freebsd7.0' 'build_alias=amd64-portbld-freebsd7.0' 'CC=cc' 'CFLAGS=-O2 -fno-strict-aliasing -pipe -I/usr/local/include/graphviz' 'LDFLAGS=-L/usr/local/lib -L/usr/local/lib/graphviz' 'CPPFLAGS=-I/usr/local/include' 'CXX=c++' 'CXXFLAGS=-O2 -fno-strict-aliasing -pipe -I/usr/local/include/graphviz' 'FONTCONFIG_CFLAGS=-I/usr/local/include' 'FONTCONFIG_LIBS=-L/usr/local/lib' 'RSVG_CFLAGS=-I/usr/local/include/librsvg-2' 'RSVG_LIBS=-L/usr/local/lib'
COPYRIGHT Copyright (C) 1999-2008 ImageMagick Studio LLC
CPPFLAGS -I/usr/local/include/ImageMagick
CXX c++
CXXFLAGS -O2 -fno-strict-aliasing -pipe -I/usr/local/include/graphviz -Wall -W
DEFS -DHAVE_CONFIG_H
DELEGATES bzlib djvu fontconfig freetype gs gvc jbig jpeg jp2 lcms openexr png rsvg tiff x11 xml wmf zlib
DISTCHECK_CONFIG_FLAGS 'CC=cc' 'CFLAGS=-O2 -fno-strict-aliasing -pipe -I/usr/local/include/graphviz' 'CPPFLAGS=-I/usr/local/include' 'CXX=c++' 'LDFLAGS=-L/usr/local/lib -L/usr/local/lib/graphviz' --disable-deprecated --with-quantum-depth=16 --with-umem=no --with-autotrace=no --with-dps=no --with-fontpath=
EXEC-PREFIX /usr/local
HOST amd64-portbld-freebsd7.0
LDFLAGS -L/usr/local/lib -L/usr/local/lib -L/usr/local/lib/graphviz -L/usr/local/lib -R/usr/local/lib -L/usr/local/lib -lfreetype -lz -L/usr/local/lib
LIB_VERSION 0x645
LIB_VERSION_NUMBER 6,4,5,5
LIBS -lMagickCore -ljbig -llcms -ltiff -lfreetype -ljasper -ljpeg -lgs -lpng -ldjvulibre -L/usr/local/lib -lfontconfig -lwmflite -lXext -lXt -lSM -lICE -lX11 -lbz2 -pthread -L/usr/local/lib -lIlmImf -lz -lImath -lHalf -lIex -lIlmThread -pthread -L/usr/local/lib -lrsvg-2 -lgdk_pixbuf-2.0 -lm -lcairo -lgobject-2.0 -lgmodule-2.0 -lglib-2.0 -liconv -lxml2 -L/usr/local/lib/graphviz -lgvc -lgraph -lcdt -lz -lm -lgomp
NAME ImageMagick
PCFLAGS -fopenmp
PREFIX /usr/local
QuantumDepth 16
RELEASE_DATE 2008-12-09
VERSION 6.4.5
WEBSITE http://www.imagemagick.org
---