[Bf-committers] Draco open source 3D compression from Google

[Chris Lee]

Thank you Sergey,
I really appreciate you taking the time to run these tests. It does look
like there is a significant compression for formats that are pure geometry,
like .obj and .ply.
This could be of great benefit for web applications that use WebGL 3D
interaction. I can see Sketchfab load times could be reduced in future.
Also mobile apps that visualise 3D objects would benefit.
Looking forward to your further test results.

Kind Regards,
Chris "*Chips*" Lee
Mobile: 0410155111

Infin8eye <http://infin8eye.carbonmade.com/>
Knight of the DLF
IGDA Sydney founding member

On 2 February 2017 at 22:18, Sergey Sharybin <sergey.vfx at gmail.com> wrote:

> Ok, some follow up.
>
> Misread the documentation, so there is some quantization is happening by
> default.
>
> With quatization disabled the Draco file is 11MB uncompressed and 5MB after
> applying GZip compression.
>
> What is weird is that the quantization does not give behave linearly for me
> here. That being said, default quantization of 14 with compression disabled
> gives 11MB file, going to 16 bit quantization the file size is 12MB, but
> using 32 bit quantization gives file of 4MB only.
>
> So what's happening here?
>
> Anyway, guess that's it for my today's tests.
>
> On Thu, Feb 2, 2017 at 12:03 PM, Sergey Sharybin <sergey.vfx at gmail.com>
> wrote:
>
> > Hi,
> >
> > Here is comparison of different formats using triangulated adult dragon
> > from Sintel:
> >
> >  12,105,660  dragon_compressed.blend
> >  11,261,674  dragon_compressed.blend.gz
> >  36,831,000  dragon_uncompressed.blend
> >  11,634,220  dragon_uncompressed.blend.gz
> >     893,100  dragon.drc
> >     830,090  dragon.drc.gz
> >  11,265,324  dragon.fbx
> >  10,487,110  dragon.fbx.gz
> >  31,398,634  dragon.obj
> >   8,823,381  dragon.obj.gz
> >  79,948,585  dragon.ply
> >  15,625,622  dragon.ply.gz
> >
> >
> > Draco is order of magnitude smaller than compressed OBJ. After converting
> > Draco back to OBJ and importing it to Blender didn't see any issues with
> > the surface. So seems it's not like it dropped all the geometry.
> >
> > Surely this is just a result of quick experiment, but it passed the
> > threshold of being interesting enough for the further investigation.
> >
> >
> > On Thu, Feb 2, 2017 at 11:36 AM, dj azo <azo at djazo.com> wrote:
> >
> >> Examining
> >>
> >> https://github.com/google/draco
> >>
> >> There is just PLY encoder.
> >>
> >> > On 2 Feb 2017, at 12.25, Ton Roosendaal <ton at blender.org> wrote:
> >> >
> >> > Hi,
> >> >
> >> > This would first be something for web projects I guess.
> >> >
> >> > The claim made in the blog post is also unclear. As one of the
> >> commenters (Lubos) writes:
> >> > "I miss in the article information which file format they compressed"
> >> >
> >> > I'm afraid they used an ascii format and compare it with theirs.
> >> >
> >> > -Ton-
> >> >
> >> > --------------------------------------------------------
> >> > Ton Roosendaal  -  ton at blender.org   -   www.blender.org
> >> > Chairman Blender Foundation, Director Blender Institute
> >> > Entrepotdok 57A, 1018 AD, Amsterdam, the Netherlands
> >> >
> >> >
> >> >
> >> >> On 02 Feb 2017, at 07:12, Chris Lee <infin8eye at gmail.com> wrote:
> >> >>
> >> >> I am keen to find out more about how this could be added to Blender,
> >> but I
> >> >> do not know where it would even show up in the interface, when used.
> >> >> Would Google's Draco compression be something that is added to 3D
> >> object
> >> >> exporting as an option?
> >> >>
> >> >> Kind Regards,
> >> >> Chris "*Chips*" Lee
> >> >> Mobile: 0410155111
> >> >>
> >> >> Infin8eye <http://infin8eye.carbonmade.com/>
> >> >> Knight of the DLF
> >> >> IGDA Sydney founding member
> >> >>
> >> >> On 17 January 2017 at 03:35, Chris Lee <infin8eye at gmail.com> wrote:
> >> >>
> >> >>> A colleague pointed this out the other day. Google has released an
> >> open
> >> >>> source 3D compression library called Draco.
> >> >>>
> >> >>> https://opensource.googleblog.com/2017/01/introducing-draco-
> >> >>> compression-for-3d.html?m=1
> >> >>>
> >> >>> I am unsure where to start the process of discussing how to find
> >> someone
> >> >>> to work on adding this option to exported files from Blender. Can
> you
> >> >>> suggest how to get the ball rolling?
> >> >>>
> >> >>> Regards,
> >> >>> Chris Lee
> >> >>>
> >> >> _______________________________________________
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> >> >
> >> > _______________________________________________
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> >>
> >> --
> >> Azo
> >>
> >>
> >>
> >> _______________________________________________
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> >
> >
> >
> > --
> > With best regards, Sergey Sharybin
> >
>
>
>
> --
> With best regards, Sergey Sharybin
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