Addition to thumbnail examples...
Posted: 2015-07-29T18:55:00-07:00
Appearing in an hour or two, in Thumbnails Rounded...
http://www.imagemagick.org/Usage/thumbnails/#rounded
Circle masked Image (example)...
Using a Polar Cycle Trick we can generate a perfect anti-aliased circle mask for any sized thumbnail. Of course we will only use the distorted image as a mask for the original image, so as to get the best result.
convert thumbnail.gif -alpha set \
\( +clone -distort DePolar 0 \
-virtual-pixel HorizontalTile -background None -distort Polar 0 \) \
-compose Dst_In -composite -trim +repage circle_masked.png
http://www.imagemagick.org/Usage/thumbnails/#rounded
Circle masked Image (example)...
Using a Polar Cycle Trick we can generate a perfect anti-aliased circle mask for any sized thumbnail. Of course we will only use the distorted image as a mask for the original image, so as to get the best result.
convert thumbnail.gif -alpha set \
\( +clone -distort DePolar 0 \
-virtual-pixel HorizontalTile -background None -distort Polar 0 \) \
-compose Dst_In -composite -trim +repage circle_masked.png