The Reformat node in Nuke misses a option to reformat by a full box with x,y,r,t where the inputs bbox is preserved.
But since it doesn't, what you can do is do your LensDistortion then add a Crop where x,y,r and t are derived from the inputs bbox via expression. Then do your jazz and merge the output of that jazz to your original input or something that has the same format of your image before the crop. On the output of that jazz before the merge add a position node and type in the x and y values from the crop, this should yield your original image with your jazz minus the losses associated with the LensDistortion. cheers, diogo On Fri, Apr 17, 2015 at 3:09 PM, Rich Bobo <richb...@mac.com> wrote: > *** OK, so here’s what I’ve got… > > > LensDistort: > [x] Undistort > filter [Cubic] > Distortion Scaling [Scale to Input Format] > > Reformat: > type [scale] > scale [1.041] > resize type [none] [x] center > filter [Cubic] [x] preserve bounding box > > Crop: > preset [format] > box (...selected "Set to default" from anim. menu to populate x, y, > r, and t values...) > [x] intersect [x] black outside > > > — The Reformat is used to expand the format size to encompass the > undistorted plate size… which gives stretched pixels. > — The Crop with intersect and black outside squashes the stretched pixels. > > > *** Whew! Seems like the LensDistort node ought to have an option to > create this without all the extra nodes, right...?!? > > > > *** And, to bring things back to square one… > > (Copy of original) LensDistort: > [ ] Undistort (…unchecked...) > filter [Cubic] > Distortion Scaling [Scale to Input Format] > > Reformat: > type [scale] > scale [0.9606147] (...value derived from 1/1.041 — one, divided by > original scaling amount...) > resize type [none] [x] center > filter [Cubic] [ ] preserve bounding box (…unchecked...) > > > *** So, thank you to everyone for your help! > > > Rich > > > On Apr 17, 2015, at 1:29 PM, Igor Majdandzic <subscripti...@badgerfx.com> > wrote: > > Thinking about it, just put the crop after the reformat and check > intersect. that should do the trick with the least amount of work. Just > make sure the crop is connected directly so it picks up the images size and > not that of the root settings. > > Am 17.04.2015 um 19:13 schrieb Igor Majdandzic: > > Yeah, for some reason it puts black based on the image before > reformatting. When you compare the two the visible information is the same. > But in case you really need black, you could always put a crop after the > reformat with box set to the bounding box of the image, with black outside > and intersect checked. That way you get the image with a black outline > instead of the stretched pixels. > > Thats what we are here for :) > Igor > > Am 17.04.2015 um 18:58 schrieb Rich Bobo: > > Igor, > > Thanks! I had tried that before, but this time I turned off “black > outside”. That was cropping to some arbitrary size - i.e., not my root > format and not anything else that makes any sense. The pixels that are > outside my LensDistort-expanded bounding box are stretched, which is kinda > ugly, but I can live with that. I had hoped that the pixels would be mapped > to black. It seems like that’s what the black outside button should be > doing, but it’s obeying some other unknown format size… > > Thanks! > Rich > > > On Apr 17, 2015, at 12:47 PM, Igor Majdandzic <subscripti...@badgerfx.com> > wrote: > > Just put a reformat after the LD node and set type to 'scale', the scale > itself whatever suits you (usually 1.1 should suffice) and resize type to > 'none'. > That should do the trick. > > Igor > > Am 17.04.2015 um 18:16 schrieb Rich Bobo: > > Hi, > > I need some help with figuring out how to reveal the extra, hidden > pixels generated by the LensDistortion node… How do I show the pixels that > get scaled out of the format size after an undistort? I see the larger > bounding box, but there doesn’t seem to be any option in the LensDistort > node to expand the plate/format size to encompass the undistorted size. > I.e., to have the size expand without clipping pixels. It’s the equivalent > of increasing Photoshop’s Canvas Size. If I do an Undistort in PFTrack, for > example, the image size is automatically expanded. > > I don’t know why I can’t figure this out, but any combination of > Reformat or Merge-ing over a larger image size will not reveal the hidden > pixels! I know I must be missing something really simple, right..? (8^\ > > Thanks for any help, > Rich > > > Rich Bobo > Senior VFX Compositor > Armstrong White > Email: rich.b...@armstrong-white.com > http://armstrong-white.com/ > > Email: richb...@mac.com > Mobile: (248) 840-2665 > Web: http://richbobo.com/ > > > > _______________________________________________ > Nuke-users mailing listnuke-us...@support.thefoundry.co.uk, > http://forums.thefoundry.co.uk/http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > _______________________________________________ > Nuke-users mailing list > Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > > > _______________________________________________ > Nuke-users mailing listnuke-us...@support.thefoundry.co.uk, > http://forums.thefoundry.co.uk/http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > > > _______________________________________________ > Nuke-users mailing listnuke-us...@support.thefoundry.co.uk, > http://forums.thefoundry.co.uk/http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > _______________________________________________ > Nuke-users mailing list > Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > > _______________________________________________ > Nuke-users mailing list > Nuke-users@support.thefoundry.co.uk, http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >
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