[Digikam-devel] [Bug 189022] New: better guessing of proportions with 'inverse transformation' option

[Mikolaj Machowski]

https://bugs.kde.org/show_bug.cgi?id=189022

           Summary: better guessing of proportions with 'inverse
                    transformation' option
           Product: digikamimageplugins
           Version: unspecified
          Platform: Compiled Sources
        OS/Version: Linux
            Status: NEW
          Severity: wishlist
          Priority: NOR
         Component: Perspective
        AssignedTo: digikam-devel at kde.org
        ReportedBy: mikmach at wp.pl


Version:            (using Devel)
Compiler:          gcc4.3.2 
OS:                Linux
Installed from:    Compiled sources

New option 'inverse transformation' is very, very good thing for simple
perspective adjustments but has one bug: it badly guesses aspect ratio of
corrected fragment. With author's purpose of correcting paintings to get rid of
frames it isn't very important but if fails badly even with example presented
on his blog:

http://zwabel.wordpress.com/2009/04/06/kde-for-painters

Selected area is visibly rectangular but output is almost square. To correct
this user have to perform additional transformation with all - bad -
consequences for image quality.

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