I am wanting to use imagemagick to add watermarks to photographs. I am using OSX and Python scripts for the code and was trying the code from (http://www.imagemagick.org/Usage/text/#pango_markup) currently I am struggling to understand why I can't get the images to appear.
serinitus:nppPhotos ns$ convert -background lightblue -gravity center -size 180x \
> pango:"The <b>bold</b> and <i>beautiful</i>" \
> pango_formatting.gif
convert: unable to open image `The <b>bold</b> and <i>beautiful</i>': No such file or directory @ error/blob.c/OpenBlob/2658.
convert: no decode delegate for this image format `PANGO' @ error/constitute.c/ReadImage/501.
convert: no images defined `pango_formatting.gif' @error/convert.c/ConvertImageCommand/3187.
serinitus:nppPhotos ns$
Installed versions are ImageMagick 6.8.9-7 Q16 x86_64 2014-09-14 and pango-1.36.7 via homebrew.
I have tried re-installing ImageMagick with the --with-pango flag.
I'm down to one of two options: I'm missing something really obvious with the command line (even thought I copied/pasted it in), or there is a config error with the way that brew is installing imagemagick on OSX Lion.
It looks to me as though Pango is not installed. Either of the following two commands will tell you if ImageMagick is aware of Pango:
convert -list format
identify -list format
Output:
Format Module Mode Description
-------------------------------------------------------------------------------
3FR DNG r-- Hasselblad CFV/H3D39II
AAI* AAI rw+ AAI Dune image
AI PDF rw- Adobe Illustrator CS2
ART* ART rw- PFS: 1st Publisher Clip Art
ARW DNG r-- Sony Alpha Raw Image Format
AVI MPEG r-- Microsoft Audio/Visual Interleaved
AVS* AVS rw+ AVS X image
BGR* BGR rw+ Raw blue, green, and red samples
BGRA* BGR rw+ Raw blue, green, red, and alpha samples
BMP* BMP rw- Microsoft Windows bitmap image
...
PAM* PNM rw+ Common 2-dimensional bitmap format
PANGO* PANGO --- Pango Markup Language
Or, if you dislike looking through lists:
identify -list format | grep -Ei "Description|pango"
Format Module Mode Description
PANGO* PANGO --- Pango Markup Language
You are looking for an r for read and a w for write in the column headed Mode. As you can see, nor do I have Pango :-)