and you are -roatting just the frame, not the image.
Basically... Read in images BEFORE operating on them.
At the end of each compose you only has one image in memory.
Code: Select all
convert -size 150x150 xc:transparent -fill white -stroke #aaa -draw "rectangle 40,30 120,110" img1.png -geometry +43+33 -composite -rotate 10 -draw "rectangle 50,20 130,100" img2.png -geometry +53+23 -composite -rotate 10 -draw "rectangle 60,10 140,90" img2.png -geometry +63+13 -composite -rotate 10 output.png
note however that rotates expands the in memory image, so you may need some other adjustments and final trimming. Also rotating an image multiple times may not be the best thing to do quality wise.
PS: I home you mind if I include an example somthing like this in IM examples, on poloroid image thumbnailing.