This seems to work reasonably well using profiles to keep the color correct.
convert GirlOnPhone.jpg \
+profile icc -profile Profiles/CMYK.icc -profile Profiles/sRGB.icc \
-set option:distort:viewport 180x180-15-15 -virtual-pixel tile \
-distort SRT "0" -profile Profiles/CMYK.icc GirlOnPhone_border.jpg
see files
http://www.fmwconcepts.com/misc_tests/GirlOnPhone.jpg
and
http://www.fmwconcepts.com/misc_tests/GirlOnPhone_border.jpg
Fred
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