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

[mat menu]

I don't know if it's comparable, but 10 bit video encoding is smaller 
than 8 bit encoding. 
http://x264.nl/x264/10bit_02-ateme-why_does_10bit_save_bandwidth.pdf


On 02/02/2017 12:18, Sergey Sharybin 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
>>>>>>
>>>>> _______________________________________________
>>>>> Bf-committers mailing list
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>>> --
>>> Azo
>>>
>>>
>>>
>>> _______________________________________________
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>>>
>>
>>
>> --
>> With best regards, Sergey Sharybin
>>
>
>