Perhaps this would work. I haven't followed the thread too closely so I
may be way off base in what is needed.
Annotating
Let’s annotate our image with some text so we know what we’re looking
at. We can set the -gravity (where the annotation should occur), a
background colour (from a built-in palette) and use -splice to add extra
space to the image, making room for our label, ensuring we don’t write
over existing pixels. Here we request 18 pixels of splice only in the Y
direction. The -annotate option takes an X and Y argument, in our case
we want to nudge the text down 4 pixels.
julian@ce:~/tmp$ convert -gravity North -background Orange -splice 0x18
-annotate +0+4 "Facebook datacenter, 640x480 zoom @ X=600, Y=550"
contrast.jpeg final.jpeg
Find the whole page here:
https://discourse.criticalengineering.org/t/howto-command-line-manipulation-of-images/47
73,
Rod
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