120516 Urs Schutz wrote: > On Wed, 16 May 2012 00:12:25 -0400 > Philip Webb <purs...@ca.inter.net> wrote: >> I can't find out how to turn it into a rectangle. > Transform -> Unbend Image > Play with the vertical values, this is very easy, fast and > intuitive. With brum-3.jpg the best combination was: > vertical linear 5, vertical curved -16, Done > and after that > Transform -> Trim Image or even easier > Transform -> Auto-Trim Image to get rid of the black areas. > In the case of brum-3.jpg apply a little bit of > Retouch -> Gamma Curves, (bend the left part of the curve > a little bit to the bottom, and the right part to the top) > to enhance the image contrast. > Normally the image looses a little bit of sharpness during > the panorama stitching. You can correct this with: > Retouch -> Sharpen Image.
Thanks ! -- I tried unbending, but it seemed rather clumsy; clearly, I need to take more time to get the hang of how it works. > But: If you would like to make an exhibit, then you get > better image quality if you bring the negatives to an old-fashioned > photographer for direct enlargement on B&W photo paper. I may submit some of them to rail/transit journals for publication, but won't have a use for hardcopies nor did I know anyone still did that ... I checked all the apps in media-gfx , but very few are relevant : Graphicsmagick -- a long-ago fork of Imagemagick ; Digikam -- mb an alternative, but has 39 deps & 155 MB download ; Enblend -- removes dark/light line from .tiff's made eg by Hugin. Anyway, I have 3 apps to play with & will see where I get to. Thanks again for your very helpful advice & I HTH others. -- ========================,,============================================ SUPPORT ___________//___, Philip Webb ELECTRIC /] [] [] [] [] []| Cities Centre, University of Toronto TRANSIT `-O----------O---' purslowatchassdotutorontodotca
