Posted: 2006-09-24T19:10:26-07:00
That page you refer to gives all the info you need.
Crop the image in two using
trim however is a problem. First you have a dark edge around the page that will interfer, so use -shave to remove say 20 pixels or so.
Next you are using a bitmap image (1 bit grey), as such you will probbaly need to use a blurred trim technique (perhaps with a -despeckle) so your trim ignores small pixels clumps and trim to the larger clumps of pixels.
Note also that with -trim your final page images may be different sizes.
PS: you may have been better off using a greyscale rather than bitmap scan of the book.
Crop the image in two using
Code: Select all
convert input.png -crop 50x100%+0+0 +repage left_page.png
convert input.png -gravity East -crop 50x100%+0+0 +repage right_page.png
Next you are using a bitmap image (1 bit grey), as such you will probbaly need to use a blurred trim technique (perhaps with a -despeckle) so your trim ignores small pixels clumps and trim to the larger clumps of pixels.
Note also that with -trim your final page images may be different sizes.
PS: you may have been better off using a greyscale rather than bitmap scan of the book.