[Bf-committers] GSoC 2017: Anamorphic Breathing in Cycles(Wanxuan Sun)

[Sergey Sharybin]

Hi,

Just a small detail: Cycles is licensed by Apache2. So model should be
compatible with that, and that will make it compatible with GPL as well.
I'm also not sure how you can license model itself, so don't see big issue
here.

There are several work done in related topics:

- Custom lens mapping patch [1] which Dalai already mentioned.
- Distortion model support done by Lukas Stockner [2].
- There is also experiment with camera lens nodes from me [3].

To me it seems the project boils down to two pieces: (1) lens model support
in Cycles and (2) giving easy-to-use and clear interface for artists. The
latter point should have priority.

[1] https://developer.blender.org/T35428
[2] https://developer.blender.org/D1895
[3] https://developer.blender.org/diffusion/B/browse/cycles_camera_nodes/

On Wed, Mar 29, 2017 at 10:30 AM, Dalai Felinto <dfelinto at gmail.com> wrote:

> Hi,
>
> 1) We want to reproduce a realistic camera breathing effect that
> matches the expected behaviour for the lens settings. How is that not
> clear?
>
> 2) If the "models" are compatible with our (GPL) license, and can be
> integrated in Cycles I can't see why not.
>
> 3) That's the closer we ever had (read the discussion in there too).
> But it covers arbritary deformation grids, not camera breathing:
> https://developer.blender.org/T35428
>
> Regards,
> Dalai
> --
> blendernetwork.org/dalai-felinto
> www.dalaifelinto.com
>
>
> 2017-03-28 15:43 GMT+02:00 Reignian Sun <reignianor at gmail.com>:
> > Hi everyone:
> >
> > My name is Wanxuan Sun, a first-year master student in CAD & CG State Key
> > Lab at Zhejiang University, focused in computer graphics, specifically
> > computer animation research. I'm interested in the anamorphic breathing
> > topic, after studying around the topic and reading the replies to the
> > "Camera Breathing Support" issue, I still have several questions:
> >
> > 1. the description of the topic says "enabling a unique breathing pattern
> > of each lens", I want to know if "each lens" refers to lenses of
> different
> > anamorphic pixel ratio? or lenses of different aperture shapes? or we
> > should conduct different ways, such as a perspective/fisheye way to look
> >
> > 2. are we going to present a new and good anamorphic distortion model, or
> > can we just refer to ready-made models, such as "Standard Anamorphic
> Degree
> > 4" presented by 3DEqualizer4?
> >
> > 3. Also, could you please kindly tell me if there was any effort made for
> > this function in Cycles, or if there is any testing methods?
> >
> > Thank you so much, if you have more idea or understandings about this
> > topic, please let me know.
> >
> >
> >
> > 孙婉轩 | Wanxuan* Sun*
> > State Key Lab of CAD&CG
> > Zhejiang University
> >
> > Tel：+86 18868112776
> > Email：reignianor at gmail.com
> > _______________________________________________
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-- 
With best regards, Sergey Sharybin