Either one of 2 sets of code...
Code: Select all
convert logo.png -alpha extract -blur 0x6 -shade 110x30 -normalize \
logo.png -compose Overlay -composite \
logo.png -alpha on -compose Dst_In -composite \
logo_3D.png
or
convert logo_3D.png \( +clone -background navy -shadow 80x4+6+6 \) +swap \
-background none -layers merge +repage logo_3D_shadowed.png
Thanks