Cool, thanks for sharing! On 15.07.2015, at 11:26, Pat Wong <[email protected]> wrote:
> Patrick > > Thanks for that, yes i figured out you could do that , so i wrote a gizmo to > do such a thing to go to and fro from this latlong space. > > http://www.nukepedia.com/gizmos/other/latlong_viewer > > Im still trying to figure out the best workflow for camera tracking to be > honest and whether it should be done in the Lat Long or the Rectilinear space > > > > Kind Regards > > > Patrick Wong > 077961 35224 > www.wahwahdigital.com > > > On 15 July 2015 at 06:30, Patrick Heinen <[email protected]> > wrote: > We had proprietary tools, but a simple thing you can do is map your latlong > on a sphere and stick a camera inside. Make sure to mirror the latlong(as it > get's mapped on the outside of the sphere) and make your devisions on the > sphere high enough. > > cheers, > Patrick > > On 30.06.2015, at 17:54, Pat Wong <[email protected]> wrote: > >> Patrick >> >> Thanks for the reply. Got it >> >> When you converted in and out of this rectilinear space that's not a cube >> face . Is this using in house tools or with standard nuke tools. Can you >> elaborate what the process is actually? >> >> Cheerss >> >> On 30 Jun 2015 6:53 am, "Patrick Heinen" <[email protected]> >> wrote: >> Hey Pat, >> >> When I talked about converting image spaces I meant converting from one >> projection(where projections stands for the mapping of a 3dimensional world >> to a 2 dimensional world) to another. More specifically from a rectilinear(a >> normal image as we know it) projection to a equirectangular projection(what >> we usually call latlong) and vice versa. Every tile of a cubic map is a >> rectilinear projection. But instead of going to those very specific cube >> tiles we usually generated specific "rectilinear crops" of just what we >> needed. >> >> Yes we did our camera tracks in rectilinear space, as that is what most >> tracking software understands, but it is very difficult to get precise >> enough 3d tracks of full spherical environments. >> In your case I would probably just go to a rectilinear crop, so for example >> a cubemap, do the clean up in there and bring it back into the latlong >> afterwards. >> >> Hope that helps! Good luck with your shot! >> cheers, >> Patrick >> >> On 29.06.2015, at 15:18, Pat Wong <[email protected]> wrote: >> >>> To camera track a scene in Latlong Space is this possible in Nuke? If not >>> what softwares can. >>> >>> I need to remove shadows that are on the ground plane in a shot. >>> >>> I've tried tracking a groundplane in the cubic space without much luck. >>> Too much distortion any other ideas? >>> On 29 Jun 2015 6:10 am, "Patrick Heinen" <[email protected]> >>> wrote: >>> Hey Pat, >>> >>> glad that you liked "HELP", I worked on it as a 2D TD and Compositor. In >>> our case we ended up comping a lot in Latlong space. It works for a lot of >>> cases and you get used to it pretty quickly. We also had tools that allowed >>> us to quickly check things in a rectilinear view(similiar to a cube face) >>> or move it from one image space to the other. Additionally we used quite a >>> bit of projections which worked really well. Yes shifting it around with a >>> spherical transform is also an option we used. Just keep in mind, that any >>> transformation will most likely be a filter hit, and therefore soften your >>> plate. >>> >>> cheers, >>> Patrick >>> >>> On 28.06.2015, at 07:21, Pat Wong <[email protected]> wrote: >>> >>>> >>>> >>>> >>>> On 28 June 2015 at 15:04, Pat Wong <[email protected]> wrote: >>>> Deke >>>> >>>> Thanks for the reply, yes ive seen these Videos before and whilst i >>>> believe the techniques in the video will work for most situations where >>>> the camera is locked off, Things tend to get a bit more complicated when >>>> the camera plate is moving and there are subjects in the shot, >>>> >>>> >>>> On 28 June 2015 at 01:26, Deke Kincaid <[email protected]> wrote: >>>> Pat, to answer your question the workflow with the existing nuke tools >>>> either: >>>> 1. breaking the latlong images into six packs with the sphericalTransform >>>> node. Fix in cubic, then reconvert back to latlong. >>>> >>>> >>>> How do you deal with this if an object that needs to be removed travels >>>> along multiple packs. Logically i assume you'd just tile up the six packs >>>> and deal with it that way, But the image dimensions might end up >>>> potentially large... >>>> >>>> >>>> Laying the cube maps into a horizontal cross pattern like this eg. >>>> http://wiki.polycount.com/wiki/Cube_map >>>> >>>> objects crossing the seams from the UP cube diagonally to FRONT cube i can >>>> see that as a potential problem, how would one deal with that? >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> >>>> 2.mapping the latlong onto a sphere and then projecting images onto the >>>> sphere to patch and fix images. >>>> >>>> >>>> >>>> Would projecting onto a sphere would result in a lack of parrallax? so im >>>> guessing you might need geo of the scene ideally? >>>> >>>> >>>> Pat >>>> >>>> >>>> >>>> >>>> Frank Reuter did some videos 4 years ago showing some of these workflows >>>> on making HDR's which is exactly the same as working with VR. Also he has >>>> some nice stitching with cards videos in there. >>>> >>>> https://vimeo.com/album/2567386 >>>> >>>> On Saturday, June 27, 2015, Pat Wong <[email protected]> wrote: >>>> Any of you Nukers on the forums like to share any tips or experiences for >>>> Comping in LatLong Space. >>>> >>>> Its a new exciting arena. One in which i just delving into...Ive just >>>> seen the google stories specifically 'HELP' with its comped 3d Lizard and >>>> it looked great. >>>> >>>> >>>> I've also seen the recent Nuke tech demo at NAB this year and can see the >>>> people are still developing techniques to how to actually use the more >>>> traditional 2D comp tricks in this LatLong distorted space. >>>> >>>> >>>> 1. Rig removals are a case in point, is the best way to do to tackle these >>>> spherical transform the rig into the less distrorted central region and >>>> then rotate it back to its orginal or is their a better way. If this >>>> region needs to be tracked.. how do you approach this? >>>> >>>> >>>> 2. stabilizing plates. whats the best approach? >>>> >>>> 3. The LatLong blue that the Foundry demo'd in the Blink Script was >>>> interesting as the blur strength was obviously stronger at different parts >>>> of of the distorted plate. >>>> >>>> This lead me to think could we somehow use a sphercial distortion map for >>>> all our nodes or a utilize a STMAP UV map in some way. >>>> >>>> >>>> It would be good to hear from other peoples experience with comping in his >>>> LatLong Space , on what TO DO and NOT TO DO. >>>> >>>> >>>> >>>> cheers >>>> >>>> pat wong >>>> >>>> >>>> >>>> >>>> -- >>>> ----- >>>> Deke Kincaid >>>> M&E OEM Development Manager >>>> The Foundry >>>> Mobile: (310) 883 4313 >>>> Tel: (310) 399 4555 - Fax: (310) 450 4516 >>>> >>>> _______________________________________________ >>>> Nuke-users mailing list >>>> [email protected], http://forums.thefoundry.co.uk/ >>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>>> >>>> >>>> _______________________________________________ >>>> Nuke-users mailing list >>>> [email protected], http://forums.thefoundry.co.uk/ >>>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>> >>> >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >>> _______________________________________________ >>> Nuke-users mailing list >>> [email protected], http://forums.thefoundry.co.uk/ >>> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> >> >> _______________________________________________ >> Nuke-users mailing list >> [email protected], http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users >> _______________________________________________ >> Nuke-users mailing list >> [email protected], http://forums.thefoundry.co.uk/ >> http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users > > _______________________________________________ > Nuke-users mailing list > [email protected], http://forums.thefoundry.co.uk/ > http://support.thefoundry.co.uk/cgi-bin/mailman/listinfo/nuke-users
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