I have a large number of ex-camera jpegs of the pages of a book,
photographed at an archive where scanning is prohibited. A camera stand was
used, with the book supported on foam wedges. Consequently, both pages in
each image are distorted - i.e. each page of a pair is a trapezium.
It is, of course, a simple matter to crop and apply the perspective tool
(twice) to an image to restore the pages to their flat state. Doing it for
several hundred images is a non-starter, and anyway that's what the machine
Proposed solution :
Import an image to the Gimp.
Drag and drop a number of images into the same project - as many as the
machine can handle.
Link the image layers.
Select one page and use the Perspective Tool to pull the page 'square'.
Repeat for the second page.
Export each image, working down the stack.
Selecting the right-hand page and correcting the perspective works, in that
the Gimp progressively works down the layers. But, although each right-hand
page is correctly 'squared up', all the left-hand pages, other than the top
layer, are enlarged and cropped.
Am I misusing the Gimp, or hoping for too much?
Has anyone done something similar?
Software used :
2.6 under Debian Squeeze.
2.8.2 under Mint 14.1
2.8.6 under Windows 7
All OS 64-bit.
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