I just ran the view360stereo.cal file on a model that I've been working with. The image that's generated is mirrored left-to-right from what I'd expect. Other than that, the ODS projection works decently well in my cardboard viewer.
A few other notes: The .cal file name in the example in comments doesn't match the new name of the .cal file. Also, this is perhaps unnecessary, but I'd like to be able to specify the forward direction to appear in the center of the image. For my own work, I've gone ahead and implemented the ODS view in source code. I've called it VT_ODS (-vto) and added a new parameter -vi for inter-pupillary distance. I haven't bothered with the EX and EZ parameters for neck rotation yet. Also, the implementation isn't complete (I'm not sure what viewloc() does, for example), but it's working for my purposes. Cheers, Nathaniel On Fri, Jan 13, 2017 at 9:31 PM, Gregory J. Ward <gregoryjw...@gmail.com> wrote: > I checked in the file, renaming it to "view360stereo.cal" in the > src/cal/cal folder. I made a few modifications, which I hope are > improvements, but I don't have a viewer that I can test it with. Can > someone give it a try? > > Thanks! > -Greg > > > From: "Gregory J. Ward" <gregoryjw...@gmail.com> > > Date: January 11, 2017 4:53:07 PM PST > > > > Thanks, Mark. > > > > I'll take a closer look at it and generate some test images with your > .cal file. Also, if there are any features people want to have that they > would feel helpful or important, let us know! > > > > -Greg > > > >> From: Mark Stock <mst...@umich.edu> > >> Date: January 11, 2017 4:40:54 PM PST > >> > >> Andy, Greg, > >> > >> I'm happy to have it included, if it's up to par. I'm not happy with > >> the neck rotation portion of that code, and if you want the pixel > >> edges to line up right on azimuth=0, I need to put a 0.5 in there > >> somewhere. > >> > >> Mark > >> > >> On 1/11/17, Andy McNeil <mcneil.and...@gmail.com> wrote: > >>> Hi Greg, > >>> Mark Stock created the attached cal file for rendering ODS views. If > it is > >>> okay with Mark, can we add the cal file to the radiance distribution? > >>> Andy > >>> > >>> > >>> On Wed, Jan 11, 2017 at 3:20 PM, Gregory J. Ward < > gregoryjw...@gmail.com> > >>> wrote: > >>> > >>>> Thanks, Andy. > >>>> > >>>> Have you already created a .cal file to generate the appropriate ray > >>>> origins and directions for this? If not, I could take a crack at it. > >>>> Seems like an easier method than adding a new view type, especially > since > >>>> we would need a new parameter for the stereo offset to get it to do > what > >>>> we > >>>> want. > >>>> > >>>> Regarding rpiece, you can always use the rtrace -n option to get an > >>>> equivalent speed-up. > >>>> > >>>> Cheers, > >>>> -Greg > >>>> > >>>> *From: *Andy McNeil <mcneil.and...@gmail.com> > >>>> > >>>> *Date: *January 11, 2017 1:00:31 PM PST > >>>> > >>>> > >>>> Hi Greg, > >>>> > >>>> The viewpoint, or ray origin, is different for each column of pixels > in a > >>>> stereo ODS rendering. If you start with a viewpoint, and draw a circle > >>>> with > >>>> diameter that is the distance between one's pupils, then the origin > for > >>>> each ray should be at a point where the ray is tangent to the circle > (on > >>>> the left side of the circle for left eye and right side for right > eye). > >>>> It's explained & illustrated well here: > https://developers.google.com/ > >>>> vr/jump/rendering-ods-content.pdf > >>>> > >>>> I don't see how clipping planes could be used to modify the ray > origin, > >>>> but I could be wrong. > >>>> > >>>> And this goes a ways back in the thread, but one instance where > smaller > >>>> than 180° x 360° sized equirectangular views would be necessary is if > a > >>>> user wanted to use rpiece to render the full view. > >>>> > >>>> Best, > >>>> Andy > >>>> > >>>> > >>>> On Tue, Jan 10, 2017 at 10:38 AM, Gregory J. Ward > >>>> <gregoryjw...@gmail.com> > >>>> wrote: > >>>> > >>>>> Hi Victor, > >>>>> > >>>>> I thought that there was some trick to doing stereo 360° views that > >>>>> involved rotating the eye positions with the ray directions to keep > them > >>>>> at > >>>>> right angles. Andy (McNeil), can you help us out? > >>>>> > >>>>> -Greg > >>>>> > >>>>> *From: *Victor LRG <rio...@gmail.com> > >>>>> > >>>>> *Date: *January 10, 2017 2:14:48 AM PST > >>>>> > >>>>> > >>>>> I agree with Nathaniel that the general use would be similar to > >>>>> cylindrical > >>>>> or angular fisheye views in terms of view apertures. Personally, I > use > >>>>> the equirectangular view in four combinations: 180-360 deg > horizontally > >>>>> and > >>>>> 90-180 deg vertically, and then as a base for other fancier view > types > >>>>> when > >>>>> I need them. > >>>>> > >>>>> With regards to the stereo offset I wonder if it could be added with > a > >>>>> bit of work using the standard clipping plane offset as an stereo > one? > >>>>> > >>>>> Victor > >>>>> > >>>>> On 9 January 2017 at 15:59, Guglielmetti, Robert < > >>>>> robert.guglielme...@nrel.gov> wrote: > >>>>> > >>>>>> I’ll keep an eye out, should this be added to the standard palette > of > >>>>>> views in the source. I think it’s pretty easy to add it to the Qt > >>>>>> rvu... > >>>>>> > >>>>>> On 1/8/17, 10:18 AM, "Gregory J. Ward" <gregoryjw...@gmail.com> > wrote: > >>>>>> > >>>>>>> Hi Victor (& Nathaniel), > >>>>>>> > >>>>>>> > >>>>>>> I am happy to take a look at the code and see how much effort it > would > >>>>>> be > >>>>>>> to integrate. I have a question first, however. > >>>>>>> > >>>>>>> > >>>>>>> Is the "equirectangular" view useful for anything less than a full > >>>>>>> panorama? Would people want to use it for smaller/different > views, or > >>>>>> do > >>>>>>> you always set vertical to 180° and horizontal to 360° in every > >>>>>>> application? > >>>>>>> > >>>>>>> > >>>>>>> If you only use this view for one purpose, then I wonder if it is > >>>>>>> really > >>>>>>> worth having a view implemented in Radiance, which needs to handle > >>>>>>> every > >>>>>>> possible setting correctly. Also, I wonder in such a case if you > have > >>>>>>> tested every possible (legal) setting? > >>>>>>> > >>>>>>> > >>>>>>> Cheers, > >>>>>>> -Greg > >>>>>> > >>>>> > >>>>> _______________________________________________ > >>>>> Radiance-dev mailing list > >>>>> Radiance-dev@radiance-online.org > >>>>> http://www.radiance-online.org/mailman/listinfo/radiance-dev > >>>>> > >>>>> > >>>> _______________________________________________ > >>>> Radiance-dev mailing list > >>>> Radiance-dev@radiance-online.org > >>>> http://www.radiance-online.org/mailman/listinfo/radiance-dev > >>>> > >>>> > >>>> _______________________________________________ > >>>> Radiance-dev mailing list > >>>> Radiance-dev@radiance-online.org > >>>> http://www.radiance-online.org/mailman/listinfo/radiance-dev > >>>> > >>>> > >>> > >> > >> _______________________________________________ > >> Radiance-dev mailing list > >> Radiance-dev@radiance-online.org > >> http://www.radiance-online.org/mailman/listinfo/radiance-dev > > _______________________________________________ > Radiance-dev mailing list > Radiance-dev@radiance-online.org > http://www.radiance-online.org/mailman/listinfo/radiance-dev >
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