If it's done this way, i'm not so much fussed then :)
On Wed, May 1, 2013 at 2:28 AM, Jace Priester < [email protected]> wrote: > Custom data layers can be present, or not. The whole point is that they're > optional. This means that the color/size CDLs will only be in use when > colored point cloud data is imported. This means zero change and zero extra > memory usage for all other meshes. > > > > > On Tue, Apr 30, 2013 at 1:07 PM, Sergey Sharybin <[email protected] > >wrote: > > > Per-vertex color and size is not something i'll want to be added to > general > > vertex. This will lead to much higher memory consumption of every mesh, > and > > this could become really an issue for modelers. That'd also lead to wish > > being able to render such vertices as "strand"? And mixing "point cloud" > > vertices with regular modelling.. Well, i'm skeptical about all this. > > > > Perhaps CD layers will solve memory issues, but eeh.. Really not sure. > > > > > > On Wed, May 1, 2013 at 1:53 AM, Jace Priester < > > [email protected]> wrote: > > > > > Meshes are very sufficient for handling point cloud data as I have > > already > > > discussed. They are a collection of vertices, stored efficiently and > > > rendered to the viewport efficiently. They are simply lacking > per-vertex > > > color and size, which is what my code adds. There is no need for a new > > > object type to accommodate point cloud data. That's actually a really > > good > > > thing, because all the existing mesh tools continue to work. > > > > > > I agree this all sounds like too big of a project. If there were a > > library > > > out there that did this type of work well and it could be integrated > with > > > Blender, that would be great, but there isn't. Bundler is great but > it's > > > only one step in the pipeline. That said, if this does end up getting > > > underway I'm very interested in working on it with whoever is involved. > > And > > > like I said I'm working on putting together a patch for the little bit > > that > > > I have, and I'll get that part out in a couple days here. > > > > > > > > > On Tue, Apr 30, 2013 at 12:41 PM, Sergey Sharybin < > [email protected] > > > >wrote: > > > > > > > Hi, > > > > > > > > Point cloud reconstruction could be quite a benefitial project for > > > blender > > > > if fully/properly done. There're basis stuff for this already present > > in > > > > libmv (in terms of reconstruction/bundling), would need to implement > > > > correspondence matching tho and outlier filtering (which would also > be > > > > needed for automated tracking workflow). But this will also imply > quite > > > > enough of improvements in blender side -- being able to manipulate > with > > > > unordered image collections, point clouds structure (afraid mesh will > > be > > > > too much expensive for this), tools to deal with point clouds > (surface > > > > reconstruction/optimization/texturing).. This kind of glues two your > > > > proposals into one. > > > > > > > > Ends up in quite bigger project, but think delivering new tools to > > > artists > > > > is more priority than adding extra ground for them when speaking of > > GSoC > > > > project. So think better thing would be to first aim to surface > > > > reconstruction tools, texturing, orientation (bundles could be > > obtained > > > > from several cameras) and so on, and then going to "depths" in terms > > > adding > > > > SfM from unordered image sounds more awesome. :) > > > > > > > > Motion capture i'm not sure. This is rather challenging project for > > nice > > > > integration into blender/libmv, not sure GSoC's time frame is enough > > for > > > > this? > > > > > > > > > > > > On Fri, Apr 26, 2013 at 8:57 PM, Shabbir Marzban < > [email protected] > > > > >wrote: > > > > > > > > > Hi, > > > > > I wish to participate in upcoming GSOC. I want to discuss couple of > > > > ideas. > > > > > It would be great if I can have some feedback on these :). > > > > > > > > > > I have described these briefly below. Kindly let me know if further > > > > > details/ clarifications are required. > > > > > > > > > > 1) Automated rigid structure reconstruction from set of un-ordered > > > > images: > > > > > A very common structure from motion (SFM) tool, Bundler[1] can be > > used > > > to > > > > > recover 3D point cloud from such images. Its output can > > > > > further transformed into dense patches[2] on which schematic > > > > reconstruction > > > > > can be done[3]. See the video here: < > > > > > http://www.youtube.com/watch?v=UwSGtqUZx3M>. Developing this > > pipeline > > > > into > > > > > Blender will be a fun project. > > > > > > > > > > 2) An interactive tool for 3D modelling: A tool can be made > > > > > and integrated into blender as indicated in [4] which uses > > bundler's[1] > > > > > point cloud. They use plane estimation for modelling which is quite > > > > > accurate. They have presented a pretty neat and robust way of > > > estimating > > > > > planes using points clouds and vanishing points. See the video > here: > > > > > http://www.youtube.com/watch?v=RhNNLxHwz6s. > > > > > > > > > > 3)Non-rigid reconstruction (motion capture) from set of static > > > > cameras:This > > > > > reconstruction is for slightly different domain, mainly motion > > capture. > > > > > This is actually one of the methods I have coauthored[5]. It > requires > > > > > labelled track points in all the cameras feeds as input. The > salient > > > > > feature of this method is that it can handle occlusions. This > method > > > has > > > > > been extensively tested on CMU mocap database. > > > > > > > > > > Poject website: http://cvlab.lums.edu.pk/MultiviewNRSFM/ > > > > > Video: http://www.youtube.com/watch?v=a1XUPI9L9vA > > > > > > > > > > Reconstruction from this method can be used in motion re-targeting > > like > > > > in > > > > > Avator and Pirates of the Caribbean. Including this into blender > will > > > be > > > > a > > > > > great GSOC project. > > > > > > > > > > Kind Regards. > > > > > Shabbir Marzban, > > > > > > > > > > I am first year grad-student at School of Science and Engineering, > > > Lahore > > > > > University of Management Sciences, Pakistan. My resume and sample > of > > > some > > > > > old projects can be seen here: > http://shabbirm.weebly.com/index.html > > > > > > > > > > > > > > > [1]. Snavely, Noah, Steven M. Seitz, and Richard Szeliski. > "Modeling > > > the > > > > > world from internet photo collections." *International Journal of > > > > Computer > > > > > Vision* 80.2 (2008): 189-210. > > > > > > > > > > [2]Furukawa, Yasutaka, et al. "Towards internet-scale multi-view > > > > > stereo."*Computer > > > > > Vision and Pattern Recognition (CVPR), 2010 IEEE Conference on*. > > IEEE, > > > > > 2010. > > > > > > > > > > [3] Wu, Changchang, et al. "Schematic surface reconstruction." > > > *Computer > > > > > Vision and Pattern Recognition (CVPR), 2012 IEEE Conference on*. > > IEEE, > > > > > 2012. > > > > > > > > > > [4] Sinha, Sudipta N., et al. "Interactive 3D architectural > modeling > > > from > > > > > unordered photo collections." *ACM Transactions on Graphics (TOG)*. > > > Vol. > > > > > 27. No. 5. ACM, 2008. > > > > > > > > > > [5] Zaheer, Aamer, et al. "Multiview structure from motion in > > > trajectory > > > > > space."*Computer Vision (ICCV), 2011 IEEE International Conference > > on*. > > > > > IEEE, 2011. > > > > > _______________________________________________ > > > > > Bf-committers mailing list > > > > > [email protected] > > > > > http://lists.blender.org/mailman/listinfo/bf-committers > > > > > > > > > > > > > > > > > > > > > -- > > > > With best regards, Sergey Sharybin > > > > _______________________________________________ > > > > Bf-committers mailing list > > > > [email protected] > > > > http://lists.blender.org/mailman/listinfo/bf-committers > > > > > > > > > > > > > > > > -- > > > > > > > > > > > > -------------------------------------------------------------------------- > > > Jace Priester > > > Threespace Imaging > > > [email protected] > > > 559-284-0904 > > > > > > -------------------------------------------------------------------------- > > > _______________________________________________ > > > Bf-committers mailing list > > > [email protected] > > > http://lists.blender.org/mailman/listinfo/bf-committers > > > > > > > > > > > -- > > With best regards, Sergey Sharybin > > _______________________________________________ > > Bf-committers mailing list > > [email protected] > > http://lists.blender.org/mailman/listinfo/bf-committers > > > > > > -- > > > -------------------------------------------------------------------------- > Jace Priester > Threespace Imaging > [email protected] > 559-284-0904 > -------------------------------------------------------------------------- > _______________________________________________ > Bf-committers mailing list > [email protected] > http://lists.blender.org/mailman/listinfo/bf-committers > -- With best regards, Sergey Sharybin _______________________________________________ Bf-committers mailing list [email protected] http://lists.blender.org/mailman/listinfo/bf-committers
