I wrote a plugin to correct such distortion by drawing two paths: http://registry.gimp.org/node/19214
Here is a sample I ran on the page you provided: http://www.majhost.com/gallery/ffaat/gimp/more2/corrected.jpg I had to use it twice, once to correct the horizontal page bending, and once to correct the camera barreling after rotating the image. -Rob A> On Thu, Mar 21, 2013 at 11:35 AM, Mario Valle <mva...@cscs.ch> wrote: > The new cage tool is fantastic to solve the following problem, but I need > suggestions how to be more effective. > > I take a photo with the smartphone of a book page. I need two hands for > this. The page does not lies flat (see https://dl.dropbox.com/u/** > 2571325/before.jpg <https://dl.dropbox.com/u/2571325/before.jpg>) because > no more hands available to keep the page flat (and no glass sheet at > hand...). Using the cage tool with 3 nodes above and 3 below the text > produces an acceptable result (see https://dl.dropbox.com/u/** > 2571325/after.jpg <https://dl.dropbox.com/u/2571325/after.jpg>). > > Question: Is there any better method? Any GIMP plugin or even Android app > to solve this problem? > > I can trace the deformed rectangle that enclose the page text, but then I > don't know how to pass this info to the cage tool and ask to make it a real > rectangle. > > Thanks for your help! > mario > > -- > Ing. Mario Valle > Swiss National Supercomputing Centre (CSCS) | http://mariovalle.name/ > v. Trevano 131, 6900 Lugano, Switzerland | Tel: +41 (91) 610.82.60 > ______________________________**_________________ > gimp-user-list mailing list > gimp-user-list@gnome.org > https://mail.gnome.org/**mailman/listinfo/gimp-user-**list<https://mail.gnome.org/mailman/listinfo/gimp-user-list> >
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