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

[Sergey Sharybin]

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
>> >>>
>> >> _______________________________________________
>> >> Bf-committers mailing list
>> >> Bf-committers at blender.org
>> >> https://lists.blender.org/mailman/listinfo/bf-committers
>> >
>> > _______________________________________________
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>>
>> --
>> Azo
>>
>>
>>
>> _______________________________________________
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>
>
>
> --
> With best regards, Sergey Sharybin
>



-- 
With best regards, Sergey Sharybin