Changes:
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Added option to disable post-deskew on dewarping.
It should be applied to a cover with geometric distortions and without any text lines which the auto-deskew algorithm could rely on. Also it can be applied to pages with those that have non-horizontal text lines as part of the design and so the auto-deskew algorithm fails on that kind of pages.The setting is located at
Output->Dewarping->Change...->Post deskew -
Fixed: Post-deskew on dewarping enabled now fills the outside pixels with the dominant gray color in a color mode.
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Added option to control white on black mode for the adaptive binarization methods.
It should be enabled when the text or content is lighter than the background.