Maybe something like
BORDER=40
COLOR=.2,.2,.2,1.0
oiiotool input.tif --pattern constant:color=$COLOR
"{TOP.width+2*$BORDER}x{TOP.height+2*$BORDER}" "{TOP.nchannels}" --paste
"+$BORDER+$BORDER" -o output.tif
Note the use of oiiotool's {expression substitution} so that you don't need to
know the resolution of the input image.
Breakdown:
oiiotool # you know what that is
input.tif # read input image, put it on the stack
--pattern constant <size> <chans> # push a constant-colored image on the
stack
# note: at this point, input.tif is
now
# the 2nd from top image.
--paste <offset> # paste the 2nd-from-top image on the top image
# .. at the given offset coordinate
-o output.tif # write the result here
Details:
In expressions, TOP is the image currently on the top of the stack (that is,
input.tif, since the constant image hasn't been pushed yet, when the arguments
to --pattern are still being evaluated). So TOP.width, TOP.height, and
TOP.nchannels are the resolution and number of channels of input.tif.
Therefore, {TOP.width+2*$BORDER}x{TOP.height+2*$BORDER} will expand to
something like "2000x1160" if input.tif was 1920x1080 and BORDER was set to 40.
> On Oct 17, 2021, at 7:00 AM, Mikael Sundell <mikael.sund...@gmail.com> wrote:
>
> Hey all,
>
> I’ve been away for some time and now playing with OpenImageIO and Lightroom,
> is it possible to somehow generate a border around an image with something
> like a resize 7-80% + fill with white/ black or any other color using the
> command line tools?
>
> Remember doing this in the past using olio c++ and Qt/ pixmaps.
>
> Thanks :-)
>
> Mikael
>
>
> Best regards,
>
> Mikael Sundell
> mikael.sund...@gmail.com
>
> _______________________________________________
> Oiio-dev mailing list
> Oiio-dev@lists.openimageio.org
> http://lists.openimageio.org/listinfo.cgi/oiio-dev-openimageio.org
--
Larry Gritz
l...@larrygritz.com
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