Cmyk

perfil por papel

• ISO coated = papel couché
• ISO uncoated = papel offset comum
• ISO newspaper = papel jornal

wget -c http://download.adobe.com/pub/adobe/iccprofiles/win/AdobeICCProfiles.zip
unzip AdobeICCProfiles.zip -d /tmp

no sistema geral

mkdir -p /usr/share/color/icc
mv /tmp/Adobe\ ICC\ Profiles/CMYK\ Profiles/* /usr/share/color/icc
mv /tmp/Adobe\ ICC\ Profiles/RGB\ Profiles/* /usr/share/color/icc

ou para somente no usuário

mkdir -p $HOME/.color/icc
mv /tmp/Adobe\ ICC\ Profiles/CMYK\ Profiles/* $HOME/.color/icc
mv /tmp/Adobe\ ICC\ Profiles/RGB\ Profiles/* $HOME/.color/icc

ou

apt-get install icc-profiles

com imagemagick

convert -colorspace CMYK -profile ~/.color/icc/CoatedGRACoL2006.icc \
cartao.frente.png cartao.frente.jpg

convert -colorspace GRAY -profile ~/.color/icc/ISOcoated_v2_grey1c_bas.icc \
cartao.verso.png cartao.verso.jpg

$ identify -format %[colorspace] image.jpg

aplicativos

utilitários/aplicativos para conversão de arquivos RGB - CMYK

• Duotoner
• Cmyktool
• Krita
• sK1
• phatch
• GIMP
• Convert
• jpegicc
• tifficc
• Scribus

Outras referências

• INSTALAR PERFIS ICC NO LINUX, MAC E WINDOWS
• ftp://ftp.adobe.com/pub/adobe/iccprofiles/win/AdobeICCProfilesCS4Win_end-user.zip
• https://fedoraproject.org/wiki/How_to_set_CMYK_color_on_a_design_for_printing
• https://fedoraproject.org/wiki/About_CMYK
• http://en.wikipedia.org/wiki/Cmyk#Conversion
• http://en.wikipedia.org/wiki/Subtractive_color
• http://libregraphicsworld.org/blog/entry/getting-cmyk-colors-from-inkscape-to-scribus