find coordinates of bounding box of transparent pixels

[ravikum]

Hello,
I have some png images with transparent areas like this with one or more holes :




the edges are semi transparent.

Please help me in finding the coordinates of the top left corner and bottom right corner of the bounding box of the transparent area like this.




Thanks

[fmw42]

see -trim or string format "%@"

Code: Select all

convert dwrl3t.png -format "%@" info:

56x70+22+55

see
http://www.imagemagick.org/script/comma ... s.php#trim
http://www.imagemagick.org/script/escape.php

[ravikum]

Thanks a lot.
It worked very well.